diff --git "a/19\351\203\221\351\233\250\350\211\257/20250331 Cisco\344\272\244\346\215\242\346\234\272\345\256\211\345\205\250\347\256\241\347\220\206.md" "b/19\351\203\221\351\233\250\350\211\257/20250331 Cisco\344\272\244\346\215\242\346\234\272\345\256\211\345\205\250\347\256\241\347\220\206.md"
new file mode 100644
index 0000000000000000000000000000000000000000..f72f6cc6f1510548e0f9c6c0a3b64bad71e0c806
--- /dev/null
+++ "b/19\351\203\221\351\233\250\350\211\257/20250331 Cisco\344\272\244\346\215\242\346\234\272\345\256\211\345\205\250\347\256\241\347\220\206.md"	
@@ -0,0 +1,62 @@
+# 笔记
+
+1. 配置密码
+
+```cmd
+Switch>       //用户模式
+Switch>enable  //特权模式，一般用于查询
+Switch# configure terminal     //(config t简写) 全局模式，一般用于修改配置
+Switch(config)# line console 0  //控制台线路模式，‘0’表示第一个控制台接口
+Switch(config-line)# password aaa123456 //设置控制台登录密码
+Switch(config-line)# login //强制连接控制台时输入密码，若不配置，不会生效
+Switch(config-line)# end
+Switch# show running-config //显示配置文件，用来检查配置是否生效
+Switch # write //保存配置
+
+Switch(config)#line ?
+ <0-16>   First Line number
+  console  Primary terminal line
+  vty      Virtual terminal
+  
+  Switch(config)# service password-encryption  // 对明文密码进行弱加密
+```
+
+2. Telnet配置
+
+```cmd
+Switch>
+Switch>enable
+Switch# configure terminal
+Switch(config)#vty 0 4  /拟终端线路配置模式（0-4表示5个并发远程连接最多可以连16台0-15）
+Switch(config-line)#password 11111 //设置telenet登录密码
+Switch(config-line)#login    //启用密码验证
+Switch(config-line)#transport input telnet //指定这些线路只接受Telnet连接
+Switch(config-line)#exit  //退出当前配置模
+Switch(config)#interface vlan 1 //进入VLAN 1接口配置模式
+Switch(config-if)#ip address 192.168.10.11 5.255.255.0 //为交换机设置管理IP地址和子网掩码
+Switch(config-if)#no shutdown //激活该虚拟接口
+
+Switch(config-line)#transport ?
+  input   Define which protocols to use when connecting to the terminal server
+  output  Define which protocols to use for outgoing connections
+```
+
+3. SSH高级配置
+
+```cmd
+Switch(config)# hostname SW1  //主机名（RSA密钥生成必需）
+SW1(config)# ip domain-name mxdx.com //域名（RSA密钥生成必需）
+SW1(config)# crypto key generate rsa //生成RSA密钥,可直接回车
+SW1(config)# username admin secret abc //创建本地用户admin，密码abc（SSH登录用）
+SW1(config)# line vty 0 4
+SW1(config-line)# transport input ssh //只允许SSH  all none telnet ssh
+SW1(config-line)# login local  //使用本地用户认证
+SW1(config-line)#exit  //退出当前配置模
+SW1(config)#interface vlan 1 //进入VLAN 1接口配置模式
+SW1(config-if)#ip address 192.168.10.1 255.255.255.0 //为交换机设置管理IP地址和子网掩码
+SW1(config-if)#no shutdown //激活该虚拟接口（默认交换机物理接口常开，但VLAN接口需手动激活）
+SW1(config-if)#exit
+SW1(config)#exit
+SW1# show ip ssh  //确认SSH已启用
+```
+
diff --git "a/19\351\203\221\351\233\250\350\211\257/20250401 VLAN\347\232\204\351\205\215\347\275\256.md" "b/19\351\203\221\351\233\250\350\211\257/20250401 VLAN\347\232\204\351\205\215\347\275\256.md"
new file mode 100644
index 0000000000000000000000000000000000000000..e870c10db0a728e78224f53995937a3956d1056c
--- /dev/null
+++ "b/19\351\203\221\351\233\250\350\211\257/20250401 VLAN\347\232\204\351\205\215\347\275\256.md"	
@@ -0,0 +1,81 @@
+# 笔记
+
+划分vlan，vlan10-30
+
+```cmd
+Switch>en
+Switch#conf t
+Switch(config)#vlan 10
+Switch(config-vlan)#end
+Switch#conf t
+Switch(config)#vlan 20
+Switch(config-vlan)#exit
+Switch(config)#vlan 30
+Switch(config-vlan)#exit
+
+```
+
+给vlan10,F0/2-3，给vlan20,F0/4-5  vlan30 FastEthernet0/6
+
+```cmd
+Switch(config)#int
+Switch(config)#interface r
+Switch(config)#interface range f
+Switch(config)#interface range fastEthernet 0/2-3
+Switch(config-if-range)#sw
+Switch(config-if-range)#switchport acc
+Switch(config-if-range)#switchport access vlan 10
+Switch(config-if-range)#exit
+Switch(config)#in
+Switch(config)#interface r
+Switch(config)#interface range f
+% Incomplete command.
+Switch(config)#in
+Switch(config)#interface r
+Switch(config)#interface range f
+Switch(config)#interface range fastEthernet 0/4-5
+Switch(config-if-range)#sw
+Switch(config-if-range)#switchport ac
+Switch(config-if-range)#switchport access vlan 20
+Switch(config-if-range)#exi
+Switch(config)#int
+Switch(config)#interface r
+Switch(config)#interface fastEthernet 0/1
+Switch(config-if)#sw
+Switch(config-if)#switchport ac
+Switch(config-if)#switchport access vlan 30
+Switch(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/6, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/6, changed state to up
+
+Switch(config-if)#eixt
+```
+
+核心 是将交换机接交换机的端口，设为trunk
+
+```cmd
+Switch(config-if)#exit
+Switch(config)#inter
+Switch(config)#interface fa
+Switch(config)#interface fastEthernet 0/6
+Switch(config-if)#sw
+Switch(config-if)#switchport mode trun
+Switch(config-if)#switchport mode trunk 
+
+Switch(config-if)#
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/6, changed state to down
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/6, changed state to up
+```
+
+```cmd
+# 或者 查看所有接口的信息
+Switch#show interfaces status 
+#查看vlan的划分情况
+Switch#show vlan brief 
+```
+
+# 练习
+
+![image-20250401223007697](https://gitee.com/tangyushan123/image/raw/master/img/upgit_20250401_1743517813.png)
\ No newline at end of file
diff --git "a/19\351\203\221\351\233\250\350\211\257/20250403 \347\224\237\346\210\220\346\240\221\345\215\217\350\256\256.md" "b/19\351\203\221\351\233\250\350\211\257/20250403 \347\224\237\346\210\220\346\240\221\345\215\217\350\256\256.md"
new file mode 100644
index 0000000000000000000000000000000000000000..130b6e638e603c3a5e7e0d72b1a2ebe1bb4ac93e
--- /dev/null
+++ "b/19\351\203\221\351\233\250\350\211\257/20250403 \347\224\237\346\210\220\346\240\221\345\215\217\350\256\256.md"	
@@ -0,0 +1,27 @@
+# 笔记
+
+生成树协议：监视二层交换式网络以找出所有可用的链路，并关闭冗余链路以确保不会出现环路。 首先利用生成树算法创建一个拓扑数据库，然后将网络的冗余备份链路从逻辑上断开，这样数据帧只能在生成树协议选定的最优链路上进行转发。
+
+生成树：解决环路路线
+
+最小生成树：从众多路线中，找出最短路线
+
+冗余：备用，多余的
+
+RSTP（快速生成树协议）
+
+```cmd
+show spanning-tree summary  # 查看配置
+show spanning-tree # 查看状态
+Switch(config-if)#switch mode trunk 设置为共享
+spanning-tree mode rapid-pvst #修改到快速模式
+```
+
+生成树端口有4种状态
+
+- 阻塞(Block)：只监听/接收BPDU报文
+- 侦听(Listening)：只能接收或发送BPDU报文
+- 学习(Learning)：能接收或发送BPDU报文，并形成MAC地址表，但不能转发数据帧
+- 转发(Forwarding)：能接收或发送BPDU报文，并形成MAC地址表，同时发送和接收数据帧
+
+![image-20250406171736182](https://gitee.com/tangyushan123/image/raw/master/img/upgit_20250406_1743931062.png)
\ No newline at end of file
diff --git "a/19\351\203\221\351\233\250\350\211\257/20250407 \347\253\257\345\217\243\350\201\232\345\220\210.md" "b/19\351\203\221\351\233\250\350\211\257/20250407 \347\253\257\345\217\243\350\201\232\345\220\210.md"
new file mode 100644
index 0000000000000000000000000000000000000000..8dfffe929626aac33799027923006eca877917ca
--- /dev/null
+++ "b/19\351\203\221\351\233\250\350\211\257/20250407 \347\253\257\345\217\243\350\201\232\345\220\210.md"	
@@ -0,0 +1,79 @@
+
+
+# 笔记
+
+端口聚合：把多个物理端口捆绑合成一个逻辑端口
+
+1. 生成树特性（提高链路带宽）
+2. 将多个端口从逻辑上合并成一个打端口
+3. 可以做负载均衡
+4. 提供链路备份
+5. 防止网络环路
+
+
+
+将端口配置为Trunk模式
+
+```cmd
+Switch>en
+Switch#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Switch(config)#int
+Switch(config)#interface ra
+Switch(config)#interface range f0/22-24
+Switch(config-if-range)#sw
+Switch(config-if-range)#switchport mo
+Switch(config-if-range)#switchport mode t
+Switch(config-if-range)#switchport mode trunk 
+```
+
+加入链路组1并开启
+
+```cmd
+Switch(config-if-range)#channel-g
+Switch(config-if-range)#channel-group 1 mo
+Switch(config-if-range)#channel-group 1 mode on
+```
+
+按目的IP地址来实现负载均衡
+
+```CMD
+Switch(config)#port-channel load-balance dst-ip
+```
+
+新拉一条线，加入链路1组
+
+```cmd
+Switch(config)#interface f0/21
+Switch(config-if)#sw
+Switch(config-if)#switchport m
+Switch(config-if)#switchport mode t
+Switch(config-if)#switchport mode trunk 
+
+Switch(config-if)#
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/21, changed state to down
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/21, changed state to up
+
+Switch(config-if)#channel-g
+Switch(config-if)#channel-group 1 mo
+Switch(config-if)#channel-group 1 mode on
+
+
+
+Switch(config)#interface port-channel 1      //进入聚合端口的端口配置模式
+```
+
+查看
+
+```cmd
+Switch#show interfaces etherchannel          //显示聚合端口信息
+Switch#show etherchannel summary             //显示以太通道信息
+Switch#show etherchannel             //显示以太通道
+```
+
+
+
+# 练习
+
+![image-20250407170439569](https://gitee.com/tangyushan123/image/raw/master/img/upgit_20250407_1744016685.png)
\ No newline at end of file
diff --git "a/19\351\203\221\351\233\250\350\211\257/20250408 \347\253\257\345\217\243\345\256\211\345\205\250.md" "b/19\351\203\221\351\233\250\350\211\257/20250408 \347\253\257\345\217\243\345\256\211\345\205\250.md"
new file mode 100644
index 0000000000000000000000000000000000000000..5e0c1a078da3b34e07faf3eb98b33972933e6f75
--- /dev/null
+++ "b/19\351\203\221\351\233\250\350\211\257/20250408 \347\253\257\345\217\243\345\256\211\345\205\250.md"	
@@ -0,0 +1,133 @@
+# 笔记
+
+### 限制接入的主机数
+
+1. 选择要设置的端口
+2. 修改端口的模式：access（接口模式）/trunk（共享模式）
+3. 开启端口安全
+4. 限制数量
+5. 设置处理方式：关闭端口
+
+```cmd
+Switch(config-if)#sw
+Switch(config-if)#switchport po
+Switch(config-if)#switchport port-security 
+Switch(config-if)#sw
+Switch(config-if)#switchport po
+Switch(config-if)#switchport port-security ?
+  aging        Port-security aging commands
+  mac-address  Secure mac address
+  maximum      Max secure addresses
+  violation    Security violation mode
+  <cr>
+Switch(config-if)#switchport port-security 
+Switch(config-if)#switchport port-security max
+Switch(config-if)#switchport port-security maximum 1
+Switch(config-if)#switchport port-securit violation shu
+Switch(config-if)#switchport port-securit violation shutdown 
+
+
+
+# 若违规被关闭的端口要再次开启，先主动关闭，再开启一次
+Switch(config-if)#shutdown //先主动关闭
+Switch(config-if)#no shutdown //再开启一次####
+```
+
+
+
+### 绑定死MAC地址
+
+#### 手动绑定
+
+1. 选择要设置的端口
+2. 修改端口的模式：access/trunk
+3. 开启端口安全
+4. 绑定MAC
+5. 设置违规的处理方式
+
+查MAC地址
+
+```
+C:\>ipconfig /all
+
+FastEthernet0 Connection:(default port)
+
+   Connection-specific DNS Suffix..: 
+   Physical Address................: 0001.6443.E10B
+   Link-local IPv6 Address.........: FE80::201:64FF:FE43:E10B
+   IP Address......................: 0.0.0.0
+   Subnet Mask.....................: 0.0.0.0
+   Default Gateway.................: 0.0.0.0
+   DNS Servers.....................: 0.0.0.0
+   DHCP Servers....................: 0.0.0.0
+   DHCPv6 Client DUID..............: 00-01-00-01-73-6C-BB-97-00-01-64-43-E1-0B
+
+
+```
+
+
+
+```cmd
+Switch(config)#interface f0/20
+Switch(config-if)#switchport mode access 
+Switch(config-if)#switchport po
+Switch(config-if)#switchport port-security 
+Switch(config-if)#switchport port-security mac
+Switch(config-if)#switchport port-security mac-address ?
+  H.H.H   48 bit mac address
+  sticky  Configure dynamic secure addresses as sticky
+Switch(config-if)#switchport port-security mac-address 
+% Incomplete command.
+Switch(config-if)#switchport port-security mac-address 0001.6443.E10B
+Switch(config-if)#sw
+Switch(config-if)#switchport po
+Switch(config-if)#switchport port-security v
+Switch(config-if)#switchport port-security violation shu
+Switch(config-if)#switchport port-security violation shutdown 
+```
+
+### 自动绑定
+
+```cmd
+Switch(config)#interface f0/20
+Switch(config-if)#switchport mo
+Switch(config-if)#switchport mode ac
+Switch(config-if)#switchport mode access 
+Switch(config-if)#switchport po
+Switch(config-if)#switchport port-security 
+Switch(config-if)#switchport port-security ma
+% Ambiguous command: "switchport port-security ma"
+Switch(config-if)#switchport port-security mac
+Switch(config-if)#switchport port-security mac-address str
+Switch(config-if)#switchport port-security mac-address st
+Switch(config-if)#switchport port-security mac-address sticky 
+Switch(config-if)#switchport port-security violation shutdown 
+```
+
+### 绑定MAC并限制主机数
+
+1. 选择端口
+2. 修改端口的模式
+3. 开启端口安全
+4. 绑定MAC，粘性 （一定要先ping一次，交换机才会记得这个主机 的MAC）
+5. 限制数量1
+6. 设置违规的处理方式
+
+```cmd
+Switch(config)#interface f0/17
+Switch(config-if)#sw
+Switch(config-if)#switchport mo
+Switch(config-if)#switchport mode ac
+Switch(config-if)#switchport mode access 
+Switch(config-if)#switchport port-security 
+Switch(config-if)#switchport port-security max
+Switch(config-if)#switchport port-security maximum 1
+Switch(config-if)#switchport port-security mac
+Switch(config-if)#switchport port-security mac-address st
+Switch(config-if)#switchport port-security mac-address sticky 
+Switch(config-if)#switchport port-security v
+Switch(config-if)#switchport port-security violation shu
+Switch(config-if)#switchport port-security violation shutdown 
+```
+
+![image-20250408195053118](https://gitee.com/tangyushan123/image/raw/master/img/upgit_20250408_1744113060.png)
\ No newline at end of file
diff --git "a/19\351\203\221\351\233\250\350\211\257/20250410 \344\270\211\345\261\202\344\272\244\346\215\242\346\234\272\347\256\200\345\215\225\351\205\215\347\275\256.md" "b/19\351\203\221\351\233\250\350\211\257/20250410 \344\270\211\345\261\202\344\272\244\346\215\242\346\234\272\347\256\200\345\215\225\351\205\215\347\275\256.md"
new file mode 100644
index 0000000000000000000000000000000000000000..3f37b15334ae941412de8dd28f74aada8819c622
--- /dev/null
+++ "b/19\351\203\221\351\233\250\350\211\257/20250410 \344\270\211\345\261\202\344\272\244\346\215\242\346\234\272\347\256\200\345\215\225\351\205\215\347\275\256.md"	
@@ -0,0 +1,102 @@
+# 笔记
+
+S3560 既有交换机又有罗尤其，可以跨网络，三层交换机默认二层口，如果需要启用三层功能就需要在此端口输入 no swtichport 命令。二层没有此命令。
+
+对汇聚层配置
+
+```cmd
+Switch>en
+Switch#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Switch(config)#vlan 10
+Switch(config-vlan)#ex
+Switch(config)#vlan 20
+Switch(config-vlan)#ex
+Switch(config)#int
+Switch(config)#interface f0/3
+Switch(config-if)#switchport ac
+Switch(config-if)#switchport access vlan 10
+Switch(config-if)#ex
+Switch(config)#interface f0/4
+Switch(config-if)#switchport ac
+Switch(config-if)#switchport access vlan 20
+Switch(config-if)#ex
+Switch(config)#interface f0/24
+Switch(config-if)#sw
+Switch(config-if)#switchport m
+Switch(config-if)#switchport mode t
+Switch(config-if)#switchport mode trunk 
+```
+
+三层配置（S3560j）
+
+```cmd
+Switch(config)#vlan 10
+Switch(config-vlan)#ex
+Switch(config)#vlan 20
+Switch(config-vlan)#ex
+Switch(config)#int
+Switch(config)#interface f0/24
+Switch(config-if)#switchport trunk encapsulation dot1q 
+Switch(config-if)#switchport mode t
+Switch(config-if)#switchport mode trunk 
+Switch(config-if)#ex
+Switch(config)#int
+Switch(config)#interface f0/3
+Switch(config-if)#sw
+Switch(config-if)#switchport ac
+Switch(config-if)#switchport access vlan 10
+Switch(config-if)#ex
+Switch(config)#ip routing  //开启路由功能，才能跨网络
+Switch(config)#int
+Switch(config)#interface vlan 10
+Switch(config-if)#
+%LINK-5-CHANGED: Interface Vlan10, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan10, changed state to up
+
+Switch(config-if)#ip ad
+Switch(config-if)#ip address 172.16.10.254 255.255.255.0   网关 子网掩码
+Switch(config-if)#no shutdown 
+Switch(config-if)#ex
+Switch(config)#interface f0/4
+Switch(config-if)#ex
+Switch(config)#interface vlan 20
+Switch(config-if)#
+%LINK-5-CHANGED: Interface Vlan20, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan20, changed state to up
+
+Switch(config-if)#ip address 172.16.20.254 255.255.255.0
+Switch(config-if)#no sh
+Switch(config-if)#no shutdown 
+Switch(config-if)#end
+Switch#
+%SYS-5-CONFIG_I: Configured from console by console
+
+Switch#show ip route
+Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
+       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
+       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
+       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
+       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
+       * - candidate default, U - per-user static route, o - ODR
+       P - periodic downloaded static route
+
+Gateway of last resort is not set
+
+     172.16.0.0/24 is subnetted, 2 subnets
+C       172.16.10.0 is directly connected, Vlan10
+C       172.16.20.0 is directly connected, Vlan20
+
+```
+
+
+
+![image-20250410192946699](https://gitee.com/tangyushan123/image/raw/master/img/upgit_20250410_1744284587.png)
+
+测试
+
+![image-20250410192923763](https://gitee.com/tangyushan123/image/raw/master/img/upgit_20250410_1744284567.png)
+
+![image-20250410192933141](https://gitee.com/tangyushan123/image/raw/master/img/upgit_20250410_1744284573.png)
\ No newline at end of file
diff --git "a/19\351\203\221\351\233\250\350\211\257/20250411 \350\267\257\347\224\261\345\231\250.md" "b/19\351\203\221\351\233\250\350\211\257/20250411 \350\267\257\347\224\261\345\231\250.md"
new file mode 100644
index 0000000000000000000000000000000000000000..d65cf983767a8757c3cb7607e3d2c50316841b49
--- /dev/null
+++ "b/19\351\203\221\351\233\250\350\211\257/20250411 \350\267\257\347\224\261\345\231\250.md"	
@@ -0,0 +1,203 @@
+# 笔记
+
+#### telnet
+
+![image-20250411191724475](https://gitee.com/tangyushan123/image/raw/master/img/upgit_20250411_1744370244.png)
+
+```cmd
+Router>en
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#ho
+Router(config)#hostname RTO1
+RTO1(config)#int
+RTO1(config)#interface f0/0
+RTO1(config-if)#no shu
+RTO1(config-if)#no shutdown 
+
+RTO1(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
+
+RTO1(config-if)#ip aad
+RTO1(config-if)#ip ad
+RTO1(config-if)#ip address 192.168.10.2
+% Incomplete command.
+RTO1(config-if)#ip address 192.168.10.2 255.255.255.0
+RTO1(config-if)#ex
+RTO1(config)#line vty 0 15
+RTO1(config-line)#pas
+RTO1(config-line)#password 111
+RTO1(config-line)#ex
+% Ambiguous command: "ex"
+RTO1(config-line)#exit
+RTO1(config)#en
+RTO1(config)#enable sec
+RTO1(config)#enable secret 456
+```
+
+
+
+测试
+
+```cmd
+C:\>ping 192.168.10.2
+
+Pinging 192.168.10.2 with 32 bytes of data:
+
+Reply from 192.168.10.2: bytes=32 time=1ms TTL=255
+Reply from 192.168.10.2: bytes=32 time<1ms TTL=255
+Reply from 192.168.10.2: bytes=32 time<1ms TTL=255
+Reply from 192.168.10.2: bytes=32 time<1ms TTL=255
+
+Ping statistics for 192.168.10.2:
+    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
+Approximate round trip times in milli-seconds:
+    Minimum = 0ms, Maximum = 1ms, Average = 0ms
+
+C:\>telnet 192.168.10.2
+Trying 192.168.10.2 ...Open
+
+
+User Access Verification
+
+Password: 
+RTO1>en
+% No password set.
+RTO1>en
+Password: 
+RTO1#
+```
+
+
+
+#### ssh
+
+![image-20250411191710106](https://gitee.com/tangyushan123/image/raw/master/img/upgit_20250411_1744370234.png)
+
+```cmd
+Router>en
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#ho
+Router(config)#hostname Rosie
+Rosie(config)#ip ad
+Rosie(config)#ip do
+Rosie(config)#ip domain-n
+Rosie(config)#ip domain-name rosie.com
+Rosie(config)#cr
+Rosie(config)#crypto ke
+Rosie(config)#crypto key gen
+Rosie(config)#crypto key generate rsa
+The name for the keys will be: Rosie.rosie.com
+Choose the size of the key modulus in the range of 360 to 2048 for your
+  General Purpose Keys. Choosing a key modulus greater than 512 may take
+  a few minutes.
+
+How many bits in the modulus [512]: 2048
+% Generating 2048 bit RSA keys, keys will be non-exportable...[OK]
+
+Rosie(config)#use
+*3月 1 0:2:11.847: %SSH-5-ENABLED: SSH 1.99 has been enabled
+Rosie(config)#username rosie sec
+Rosie(config)#username rosie secret 0211
+Rosie(config)#ip ssh ver
+Rosie(config)#ip ssh version 2
+Rosie(config)#int
+Rosie(config)#interface f0/0
+Rosie(config-if)#ip ad
+Rosie(config-if)#ip address 192.168.40.2 255.255.255.0
+Rosie(config-if)#shutd
+Rosie(config-if)#shutdown 
+Rosie(config-if)#ex
+Rosie(config)#line vty 0 15
+Rosie(config-line)#tran
+Rosie(config-line)#transport inpu
+Rosie(config-line)#transport input ssh
+Rosie(config-line)#login local
+Rosie(config-if)#enable secret 222
+```
+
+
+
+测试
+
+```cmd
+C:\>ping 192.168.40.2
+
+Pinging 192.168.40.2 with 32 bytes of data:
+
+Reply from 192.168.40.2: bytes=32 time<1ms TTL=255
+Reply from 192.168.40.2: bytes=32 time=4ms TTL=255
+Reply from 192.168.40.2: bytes=32 time<1ms TTL=255
+Reply from 192.168.40.2: bytes=32 time<1ms TTL=255
+
+Ping statistics for 192.168.40.2:
+    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
+Approximate round trip times in milli-seconds:
+    Minimum = 0ms, Maximum = 4ms, Average = 1ms
+
+C:\>ssh -l rosie 192.168.40.2
+
+Password: 
+Rosie>en
+% No password set.
+Rosie>en
+Password: 
+Rosie#
+```
+
+#### 多网互联
+
+![image-20250411191750573](https://gitee.com/tangyushan123/image/raw/master/img/upgit_20250411_1744370270.png)
+
+```cmd
+Router>en
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#int
+Router(config)#interface f0/1
+Router(config-if)#ip add
+Router(config-if)#ip address 192.168.50.254 255.255.255.0
+Router(config-if)#no shu
+Router(config-if)#no shutdown 
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
+
+Router(config-if)#ex
+Router(config)#int
+Router(config)#interface f0/1
+Router(config-if)#ip
+Router(config-if)#ipad
+Router(config-if)#ip ad
+Router(config-if)#ip address 192.168.60.254 255.255.255.0
+Router(config-if)#no shu
+Router(config-if)#no shutdown 
+```
+
+
+
+
+
+show ip route
+
+```cmd
+Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
+       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
+       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
+       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
+       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
+       * - candidate default, U - per-user static route, o - ODR
+       P - periodic downloaded static route
+
+Gateway of last resort is not set
+
+C    192.168.50.0/24 is directly connected, FastEthernet0/0
+C    192.168.60.0/24 is directly connected, FastEthernet0/1
+
+```
+
diff --git "a/19\351\203\221\351\233\250\350\211\257/20250414 \345\215\225\350\207\202\350\267\257\347\224\261.md" "b/19\351\203\221\351\233\250\350\211\257/20250414 \345\215\225\350\207\202\350\267\257\347\224\261.md"
new file mode 100644
index 0000000000000000000000000000000000000000..a5e34501368ce2169e0ec518b6cd51e48033bd46
--- /dev/null
+++ "b/19\351\203\221\351\233\250\350\211\257/20250414 \345\215\225\350\207\202\350\267\257\347\224\261.md"	
@@ -0,0 +1,135 @@
+# 笔记
+
+单臂路由
+
+![image-20250414204759617](https://gitee.com/tangyushan123/image/raw/master/img/upgit_20250414_1744634884.png)
+
+```cmd
+Switch(config)#vlan 10
+Switch(config-vlan)#ex
+Switch(config)#vlan 20
+Switch(config-vlan)#ex
+Switch(config)#int
+Switch(config)#interface f0/2
+Switch(config-if)#sw
+Switch(config-if)#switchport ac
+Switch(config-if)#switchport access vlan 10
+Switch(config-if)#ex
+Switch(config)#interface f0/3
+Switch(config-if)#sw
+Switch(config-if)#switchport ac
+Switch(config-if)#switchport access vlan 20
+Switch(config-if)#e
+Switch(config)#int
+Switch(config)#interface f0/1
+Switch(config-if)#sw
+Switch(config-if)#switchport ac
+Switch(config-if)#switchport mo
+Switch(config-if)#switchport mode tr
+Switch(config-if)#switchport mode trunk 
+Switch(config-if)#ex
+Switch(config)#end
+```
+
+```cmd
+Switch#show vlan brief 
+
+VLAN Name                             Status    Ports
+---- -------------------------------- --------- -------------------------------
+1    default                          active    Fa0/1, Fa0/4, Fa0/5, Fa0/6
+                                                Fa0/7, Fa0/8, Fa0/9, Fa0/10
+                                                Fa0/11, Fa0/12, Fa0/13, Fa0/14
+                                                Fa0/15, Fa0/16, Fa0/17, Fa0/18
+                                                Fa0/19, Fa0/20, Fa0/21, Fa0/22
+                                                Fa0/23, Fa0/24, Gig0/1, Gig0/2
+10   VLAN0010                         active    Fa0/2
+20   VLAN0020                         active    Fa0/3
+1002 fddi-default                     active    
+1003 token-ring-default               active    
+1004 fddinet-default                  active    
+1005 trnet-default                    active    
+Switch#
+%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
+
+```
+
+```cmd
+
+Router>en
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#ho
+Router(config)#hostname Rosie
+Rosie(config)#int
+Rosie(config)#interface f0/0
+Rosie(config-if)#no shu
+Rosie(config-if)#no shutdown 
+
+Rosie(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
+ex
+Rosie(config)#int
+Rosie(config)#interface f0/0.1
+Rosie(config-subif)#
+%LINK-5-CHANGED: Interface FastEthernet0/0.1, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.1, changed state to up
+
+Rosie(config-subif)#en
+Rosie(config-subif)#encapsulation do
+Rosie(config-subif)#encapsulation dot1Q 10
+Rosie(config-subif)#ip ad
+Rosie(config-subif)#ip address 192.168.10.254 255.255.255.0
+Rosie(config-subif)#ex
+Rosie(config)#int
+Rosie(config)#interface f0/0.2
+Rosie(config-subif)#
+%LINK-5-CHANGED: Interface FastEthernet0/0.2, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.2, changed state to up
+Rinterface f0/0.2interface f0/0.2
+Rosie(config-subif)#en
+Rosie(config-subif)#encapsulation do
+Rosie(config-subif)#encapsulation dot1Q 20
+Rosie(config-subif)#ip address 192.168.20.254 255.255.255.0
+Rosie(config-subif)#end
+Rosie#
+%SYS-5-CONFIG_I: Configured from console by console
+s
+
+```
+
+```cmd
+Rosie#show ip route
+Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
+       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
+       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
+       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
+       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
+       * - candidate default, U - per-user static route, o - ODR
+       P - periodic downloaded static route
+
+Gateway of last resort is not set
+
+C    192.168.10.0/24 is directly connected, FastEthernet0/0.1
+C    192.168.20.0/24 is directly connected, FastEthernet0/0.2
+```
+
+# 预习 
+
+两个路由器相连                                                                                                                                                                                                                                                 
+
+```
+Router(config)#ip route 192.168.30.0 255.255.255.0 192.168.50.1
+Router(config)#ip route 192.168.40.0 255.255.255.0 192.168.50.1
+```
+
+```
+Router(config)#ip route 192.168.10.0 255.255.255.0 192.168.50.2
+Router(config)#ip route 192.168.20.0 255.255.255.0 192.168.50.2
+```
+
diff --git "a/19\351\203\221\351\233\250\350\211\257/20250415 \351\235\231\346\200\201\350\267\257\347\224\261.md" "b/19\351\203\221\351\233\250\350\211\257/20250415 \351\235\231\346\200\201\350\267\257\347\224\261.md"
new file mode 100644
index 0000000000000000000000000000000000000000..948366ba95f04df8d37186a9c534b248a8c6bad8
--- /dev/null
+++ "b/19\351\203\221\351\233\250\350\211\257/20250415 \351\235\231\346\200\201\350\267\257\347\224\261.md"	
@@ -0,0 +1,119 @@
+
+
+# 笔记
+
+![image-20250415212606831](https://gitee.com/tangyushan123/image/raw/master/img/upgit_20250415_1744723579.png)
+
+二层交换机配置
+
+```cmd
+Switch>en
+Switch#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Switch(config)#vlan 10
+Switch(config-vlan)#ex
+Switch(config)#vlan 20
+Switch(config-vlan)#ex
+Switch(config)#int
+Switch(config)#interface f0/1
+Switch(config-if)#sw
+Switch(config-if)#switchport 
+% Incomplete command.
+Switch(config-if)#switchport ac
+Switch(config-if)#switchport access vlan 10
+Switch(config-if)#ex
+Switch(config)#int
+Switch(config)#interface f0/3
+Switch(config-if)#sw
+Switch(config-if)#switchport ac
+Switch(config-if)#switchport access vlan 20
+Switch(config-if)#ex
+Switch(config)#int
+Switch(config)#interface f0/3
+Switch(config-if)#sw
+Switch(config-if)#switchport m
+Switch(config-if)#switchport mode t
+Switch(config-if)#switchport mode trunk 
+```
+
+路由器
+
+```cmd
+Router>en
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#int
+Router(config)#interface f0/0
+Router(config-if)#no shu
+Router(config-if)#no shutdown 
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
+
+Router(config-if)#ex
+Router(config)#int
+Router(config)#interface f0/0.1
+Router(config-subif)#
+%LINK-5-CHANGED: Interface FastEthernet0/0.1, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.1, changed state to up
+
+Router(config-subif)#en
+Router(config-subif)#encapsulation do
+Router(config-subif)#encapsulation dot1Q 10
+Router(config-subif)#ip ad
+Router(config-subif)#ip address 192.168.10.254 255.255.255.0
+Router(config-subif)#ex
+Router(config)#int
+Router(config)#interface f0/0.2
+Router(config-subif)#
+%LINK-5-CHANGED: Interface FastEthernet0/0.2, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.2, changed state to up
+
+Router(config-subif)#encapsulation dot1Q 20
+Router(config-subif)#ip address 192.168.20.254 255.255.255.0
+Router(config-subif)#ex
+Router(config)#end
+Router#
+%SYS-5-CONFIG_I: Configured from console by console
+s
+% Ambiguous command: "s"
+Router#show ip route
+Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
+       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
+       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
+       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
+       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
+       * - candidate default, U - per-user static route, o - ODR
+       P - periodic downloaded static route
+
+Gateway of last resort is not set
+
+C    192.168.10.0/24 is directly connected, FastEthernet0/0.1
+C    192.168.20.0/24 is directly connected, FastEthernet0/0.2
+
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#int
+Router(config)#interface f0/1
+Router(config-if)#ip add
+Router(config-if)#ip address 192.168.50.1 255.255.255.0
+Router(config-if)#no shu
+Router(config-if)#no shutdown 
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up
+
+Router(config-if)#
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
+
+Router(config-if)#ex
+Router(config)#ip route 192.168.30.0 255.255.255.0 192.168.50.2
+Router(config)#ip route 192.168.40.0 255.255.255.0 192.168.50.2
+```
+
+
+
diff --git "a/19\351\203\221\351\233\250\350\211\257/20250416 \351\273\230\350\256\244\350\267\257\347\224\261.md" "b/19\351\203\221\351\233\250\350\211\257/20250416 \351\273\230\350\256\244\350\267\257\347\224\261.md"
new file mode 100644
index 0000000000000000000000000000000000000000..471200b28def1f526f20f1fe33269b19ae5bd10b
--- /dev/null
+++ "b/19\351\203\221\351\233\250\350\211\257/20250416 \351\273\230\350\256\244\350\267\257\347\224\261.md"	
@@ -0,0 +1,8 @@
+# 笔记
+
+默认路由
+
+```
+ip route 0.0.0.0 0.0.0.0 <下一跳地址>
+```
+
diff --git "a/19\351\203\221\351\233\250\350\211\257/20250417 \350\267\257\347\224\261\345\231\250\344\270\211\345\261\202\344\272\244\346\215\242\346\234\272.md" "b/19\351\203\221\351\233\250\350\211\257/20250417 \350\267\257\347\224\261\345\231\250\344\270\211\345\261\202\344\272\244\346\215\242\346\234\272.md"
new file mode 100644
index 0000000000000000000000000000000000000000..f45480c3aa68e298db621b7173a73c7870558afa
--- /dev/null
+++ "b/19\351\203\221\351\233\250\350\211\257/20250417 \350\267\257\347\224\261\345\231\250\344\270\211\345\261\202\344\272\244\346\215\242\346\234\272.md"	
@@ -0,0 +1,728 @@
+![image-20250416201428716](https://gitee.com/tangyushan123/image/raw/master/img/upgit_20250416_1744805699.png)
+
+路由器0
+
+```cmd
+Router>enable
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#int
+Router(config)#interface f0/0
+Router(config-if)#no shut
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
+
+Router(config-if)#ip add
+Router(config-if)#ip address 192.168.10.254 255.255.255.0
+Router(config-if)#ex
+Router(config)#int f0/1
+Router(config-if)#ip add
+Router(config-if)#ip address 192.168.40.1 255.255.255.0
+Router(config-if)#ex
+Router(config)#int f0/1
+Router(config-if)#no shut
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
+
+Router(config-if)#ex
+Router(config)#ip route 192.168.20.0 255.255.255.0 192.168.40.2
+Router(config)#ip route 192.168.30.0 255.255.255.0 192.168.40.2
+Router(config)#
+```
+
+路由器1
+
+```CMD
+Router>enable
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#int f0/0
+Router(config-if)#no shut
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
+
+Router(config-if)#ip ad
+Router(config-if)#ip address 192.168.20.254 255.255.255.0
+Router(config-if)#ex
+Router(config)#int f0/1
+Router(config-if)#no shut
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up
+
+Router(config-if)#ex
+Router(config)#int f0/1
+Router(config-if)#no shut
+Router(config-if)#no shutdown 
+Router(config-if)#
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
+
+Router(config-if)#ip ad
+Router(config-if)#ip address 192.168.40.2 255.255.255.0
+Router(config-if)#ex
+Router(config)#int f1/0
+Router(config-if)#no shut
+Router(config-if)#no shutdown 
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet1/0, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0, changed state to up
+ip 
+% Incomplete command.
+Router(config-if)#ip add
+Router(config-if)#ip address 192.168.50.1 255.255.255.0
+Router(config-if)#ex
+Router(config)#ip route 192.168.10.0 255.255.255.0 192.168.40.1
+Router(config)#ip route 192.168.30.0 255.255.255.0 192.168.50.2
+Router(config)#
+```
+
+路由器2
+
+```CMD
+Router>enable
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#int f0/0
+Router(config-if)#no shut
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
+
+Router(config-if)#ip add
+Router(config-if)#ip address 192.168.30.254 255.255.255.0
+Router(config-if)#ex
+Router(config)#int f0/1
+Router(config-if)#no shut
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up
+
+Router(config-if)#ip add
+Router(config-if)#ip address 192.168.50.2 255.255.255.0
+Router(config-if)#
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
+
+Router(config-if)#ex
+Router(config)#ip route 192.168.10.0 255.255.255.0 192.168.50.1
+Router(config)#ip route 192.168.20.0 255.255.255.0 192.168.50.1
+Router(config)#
+```
+
+
+
+![image-20250416204457627](https://gitee.com/tangyushan123/image/raw/master/img/upgit_20250416_1744807497.png)
+
+路由器3
+
+```cmd
+Router>en
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#f0/0 
+                ^
+% Invalid input detected at '^' marker.
+	
+Router(config)#int
+Router(config)#interface f0/0
+Router(config-if)#no shu
+Router(config-if)#no shutdown 
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
+
+Router(config-if)#ex
+Router(config)#int
+Router(config)#interface f0/0.1
+Router(config-subif)#
+%LINK-5-CHANGED: Interface FastEthernet0/0.1, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.1, changed state to up
+
+Router(config-subif)#en
+Router(config-subif)#encapsulation do
+Router(config-subif)#encapsulation dot1Q 10
+Router(config-subif)#ip ad
+Router(config-subif)#ip address 192.168.10.254 255.255.255.0
+Router(config-subif)#ex
+Router(config)#int
+Router(config)#interface f0/0.2
+Router(config-subif)#
+%LINK-5-CHANGED: Interface FastEthernet0/0.2, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.2, changed state to up
+
+Router(config-subif)#encapsulation dot1Q 20
+Router(config-subif)#ip address 192.168.20.254 255.255.255.0
+Router(config-subif)#end
+Router#
+%SYS-5-CONFIG_I: Configured from console by console
+
+Router#show ip rute
+                ^
+% Invalid input detected at '^' marker.
+	
+Router#show ip route
+Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
+       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
+       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
+       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
+       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
+       * - candidate default, U - per-user static route, o - ODR
+       P - periodic downloaded static route
+
+Gateway of last resort is not set
+
+C    192.168.10.0/24 is directly connected, FastEthernet0/0.1
+C    192.168.20.0/24 is directly connected, FastEthernet0/0.2
+
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#int
+Router(config)#interface f0/1
+Router(config-if)#no shu
+Router(config-if)#no shutdown 
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up
+
+Router(config-if)#ip ad
+Router(config-if)#ip address 192.168.70.1 255.255.255.0
+Router(config-if)#no shu
+Router(config-if)#
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
+
+Router(config-if)#ex
+Router(config)#ip route 192.168.30.0 255.255.255.0 192.168.70.2
+Router(config)#ip route 192.168.40.0 255.255.255.0 192.168.70.2
+Router(config)#ip route 192.168.50.0 255.255.255.0 192.168.70.2
+Router(config)#ip route 192.168.60.0 255.255.255.0 192.168.70.2
+Router(config)#
+```
+
+
+
+路由器4
+
+```cmd
+Router>en
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#int
+Router(config)#interface f0/0
+Router(config-if)#no shu
+Router(config-if)#no shutdown 
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
+
+Router(config-if)#ex
+Router(config)#int
+Router(config)#interface f0/0.1
+Router(config-subif)#
+%LINK-5-CHANGED: Interface FastEthernet0/0.1, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.1, changed state to up
+
+Router(config-subif)#en
+% Ambiguous command: "en"
+Router(config)#interface f0/0.1
+Router(config-subif)#en
+Router(config-subif)#encapsulation do
+Router(config-subif)#encapsulation dot1Q 10
+Router(config-subif)#ip ad
+Router(config-subif)#ip address 192.168.30.254 255.255.255.0
+Router(config-subif)#ex
+Router(config)#interface f0/0.2
+Router(config-subif)#
+%LINK-5-CHANGED: Interface FastEthernet0/0.2, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.2, changed state to up
+encapsulation dot1Q 20
+Router(config-subif)#ip address 192.168.40.254 255.255.255.0
+Router(config-subif)#end
+Router#
+%SYS-5-CONFIG_I: Configured from console by console
+
+Router#show ip route
+Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
+       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
+       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
+       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
+       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
+       * - candidate default, U - per-user static route, o - ODR
+       P - periodic downloaded static route
+
+Gateway of last resort is not set
+
+C    192.168.30.0/24 is directly connected, FastEthernet0/0.1
+C    192.168.40.0/24 is directly connected, FastEthernet0/0.2
+
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#int
+Router(config)#interface f0/1
+Router(config-if)#ip ad
+Router(config-if)#ip address 192.168.80.1 255.255.255.0
+Router(config-if)#no sh
+Router(config-if)#no shutdown 
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
+
+Router(config-if)#ex
+Router(config)#ip route 192.168.10.0 255.255.255.0 192.168.80.2
+Router(config)#ip route 192.168.20.0 255.255.255.0 192.168.80.2
+Router(config)#ip route 192.168.50.0 255.255.255.0 192.168.80.2
+Router(config)#ip route 192.168.60.0 255.255.255.0 192.168.80.2
+Router(config)#
+Router#
+%SYS-5-CONFIG_I: Configured from console by console
+
+```
+
+
+
+
+
+路由器6
+
+```
+Router>en
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#int
+Router(config)#interface f0/0
+Router(config-if)#no shu
+Router(config-if)#no shutdown 
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
+
+Router(config-if)#ex
+Router(config)#int
+Router(config)#interface f0/0.1
+Router(config-subif)#
+%LINK-5-CHANGED: Interface FastEthernet0/0.1, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.1, changed state to up
+
+Router(config-subif)#en
+Router(config-subif)#encapsulation do
+Router(config-subif)#encapsulation dot1Q 10
+Router(config-subif)#ip ad
+Router(config-subif)#ip address 192.168.50.254 255.255.255.0
+Router(config-subif)#ex
+Router(config)#interface f0/0.2
+Router(config-subif)#
+%LINK-5-CHANGED: Interface FastEthernet0/0.2, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.2, changed state to up
+
+Router(config-subif)#encapsulation dot1Q 20
+Router(config-subif)#ip address 192.168.60.254 255.255.255.0
+Router(config-subif)#end
+Router#
+%SYS-5-CONFIG_I: Configured from console by console
+
+Router#show ip route
+Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
+       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
+       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
+       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
+       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
+       * - candidate default, U - per-user static route, o - ODR
+       P - periodic downloaded static route
+
+Gateway of last resort is not set
+
+C    192.168.50.0/24 is directly connected, FastEthernet0/0.1
+C    192.168.60.0/24 is directly connected, FastEthernet0/0.2
+
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#int
+Router(config)#interface f0/1
+Router(config-if)#ip ad
+Router(config-if)#ip address 192.168.90.1 255.255.255.0
+Router(config-if)#no shu
+Router(config-if)#no shutdown 
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
+
+Router(config-if)#ip route 192.168.10.0 255.255.255.0 192.168.90.2
+Router(config)#ip route 192.168.10.0 255.255.255.0 192.168.90.2
+Router(config)#ip route 192.168.20.0 255.255.255.0 192.168.90.2
+Router(config)#ip route 192.168.30.0 255.255.255.0 192.168.90.2
+Router(config)#ip route 192.168.40.0 255.255.255.0 192.168.90.2
+Router(config)#
+```
+
+
+
+
+
+路由器5（核心）
+
+```cmd
+Router>en
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#int
+Router(config)#interface f0/0
+Router(config-if)#ip ad
+Router(config-if)#ip address 192.168.70.2 255.255.255.0
+Router(config-if)#no shu
+Router(config-if)#no shutdown 
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
+
+Router(config-if)#ex
+Router(config)#int
+Router(config)#interface f0/1
+Router(config-if)#ip ad
+Router(config-if)#ip address 192.168.80.2 255.255.255.0
+Router(config-if)#no shu
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
+
+Router(config-if)#ex
+Router(config)#int
+Router(config)#interface f1/0
+Router(config-if)#ip ad
+Router(config-if)#ip address 192.168.90.2 255.255.255.0
+Router(config-if)#no shu
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet1/0, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0, changed state to up
+
+Router(config-if)#ex
+Router(config)#ip route 192.168.10.0 255.255.255.0 192.168.70.1
+Router(config)#ip route 192.168.20.0 255.255.255.0 192.168.70.1
+Router(config)#ip route 192.168.30.0 255.255.255.0 192.168.80.1
+Router(config)#ip route 192.168.40.0 255.255.255.0 192.168.80.1
+Router(config)#ip route 192.168.50.0 255.255.255.0 192.168.90.1
+Router(config)#ip route 192.168.60.0 255.255.255.0 192.168.90.1
+Router(config)#end
+Router#
+%SYS-5-CONFIG_I: Configured from console by console
+
+Router#show ip route
+Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
+       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
+       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
+       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
+       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
+       * - candidate default, U - per-user static route, o - ODR
+       P - periodic downloaded static route
+
+Gateway of last resort is not set
+
+S    192.168.10.0/24 [1/0] via 192.168.70.1
+S    192.168.20.0/24 [1/0] via 192.168.70.1
+S    192.168.30.0/24 [1/0] via 192.168.80.1
+S    192.168.40.0/24 [1/0] via 192.168.80.1
+S    192.168.50.0/24 [1/0] via 192.168.90.1
+S    192.168.60.0/24 [1/0] via 192.168.90.1
+C    192.168.70.0/24 is directly connected, FastEthernet0/0
+C    192.168.80.0/24 is directly connected, FastEthernet0/1
+C    192.168.90.0/24 is directly connected, FastEthernet1/0
+
+Router#
+```
+
+
+
+
+
+# 笔记
+
+router0
+
+```
+Router>en
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#int
+Router(config)#interface f0/0
+Router(config-if)#no shu
+Router(config-if)#no shutdown 
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
+
+Router(config-if)#ex
+Router(config)#int
+Router(config)#interface f0/0.1
+Router(config-subif)#
+%LINK-5-CHANGED: Interface FastEthernet0/0.1, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.1, changed state to up
+
+Router(config-subif)#en
+Router(config-subif)#encapsulation do
+Router(config-subif)#encapsulation dot1Q 10
+Router(config-subif)#ip af
+Router(config-subif)#ip ad
+Router(config-subif)#ip address 192.168.10.254 255.255.255.0
+Router(config-subif)#ex
+Router(config)#int
+Router(config)#interface f0/1
+Router(config-if)#no shu
+Router(config-if)#no shutdown 
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
+
+Router(config-if)#ip ad
+Router(config-if)#ip address 192.168.50.1 255.255.255.0
+Router(config-if)#ex
+Router(config)#ip route 192.168.20.0 255.255.255.0 192.168.50.2
+Router(config)#ip route 192.168.30.0 255.255.255.0 192.168.50.2
+Router(config)#ip route 192.168.40.0 255.255.255.0 192.168.50.2
+Router(config)#end
+Router#
+%SYS-5-CONFIG_I: Configured from console by console
+
+Router#show ip route
+Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
+       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
+       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
+       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
+       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
+       * - candidate default, U - per-user static route, o - ODR
+       P - periodic downloaded static route
+
+Gateway of last resort is not set
+
+C    192.168.10.0/24 is directly connected, FastEthernet0/0.1
+S    192.168.20.0/24 [1/0] via 192.168.50.2
+S    192.168.30.0/24 [1/0] via 192.168.50.2
+S    192.168.40.0/24 [1/0] via 192.168.50.2
+C    192.168.50.0/24 is directly connected, FastEthernet0/1
+
+Router#
+```
+
+
+
+
+
+router 1
+
+```
+Router(config-subif)#en
+Router(config-subif)#encapsulation do
+Router(config-subif)#encapsulation dot1Q 10
+Router(config-subif)#
+Router(config-subif)#ip af
+Router(config-subif)#ip ad
+Router(config-subif)#ip address 192.168.20.254 255.255.255.0
+Router(config-subif)#ex
+Router(config)#interface f0/0.2
+Router(config-subif)#
+%LINK-5-CHANGED: Interface FastEthernet0/0.2, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.2, changed state to up
+encapsulation dot1Q 20
+Router(config-subif)#ip address 192.168.30.254 255.255.255.0
+Router(config-subif)#ex
+Router(config)#int
+Router(config)#interface f0/1
+Router(config-if)#no shu
+Router(config-if)#no shutdown 
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
+
+Router(config-if)#ip ad
+Router(config-if)#ip address 192.168.60.1 255.255.255.0
+Router(config-if)#ex
+Router(config)#ip route192.168.10.0 255.255.255.0 192.168.60.2
+                       ^
+% Invalid input detected at '^' marker.
+	
+Router(config)#ip route 192.168.10.0 255.255.255.0 192.168.60.2
+Router(config)#ip route 192.168.40.0 255.255.255.0 192.168.60.2
+Router(config)#end
+Router#
+%SYS-5-CONFIG_I: Configured from console by console
+
+Router#show ip route
+Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
+       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
+       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
+       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
+       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
+       * - candidate default, U - per-user static route, o - ODR
+       P - periodic downloaded static route
+
+Gateway of last resort is not set
+
+S    192.168.10.0/24 [1/0] via 192.168.60.2
+C    192.168.20.0/24 is directly connected, FastEthernet0/0.1
+C    192.168.30.0/24 is directly connected, FastEthernet0/0.2
+S    192.168.40.0/24 [1/0] via 192.168.60.2
+C    192.168.60.0/24 is directly connected, FastEthernet0/1
+
+Router#
+```
+
+
+
+router 2
+
+```
+Router>en
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#itn
+Router(config)#int
+Router(config)#interface f0/0
+Router(config-if)#sw
+Router(config-if)#no shu
+Router(config-if)#no shutdown 
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
+
+Router(config-if)#ip ad
+Router(config-if)#ip address 192.168.40.254 255.255.255.0
+Router(config-if)#ex
+Router(config)#int
+Router(config)#interface f0/1
+Router(config-if)#no sh
+Router(config-if)#no shutdown 
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
+
+Router(config-if)#ip ad
+Router(config-if)#ip address 192.168.70.1 255.255.255.0
+Router(config-if)#ex
+Router(config)#ip route 192.168.10.0 255.255.255.0 192.168.70.2
+Router(config)#ip route 192.168.20.0 255.255.255.0 192.168.70.2
+Router(config)#ip route 192.168.30.0 255.255.255.0 192.168.70.2
+Router(config)#
+```
+
+三层交换机
+
+```
+Switch>en
+Switch# conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Switch(config)#int
+Switch(config)#ip routing
+Switch(config)#int
+Switch(config)#interface f0/1
+Switch(config-if)#no sw
+Switch(config-if)#no switchport 
+Switch(config-if)#
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to down
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
+
+Switch(config-if)#ip ad
+Switch(config-if)#ip address 192.168.50.2 255.255.255.0
+Switch(config-if)#ex
+Switch(config)#int
+Switch(config)#interface f0/2
+Switch(config-if)#no sw
+Switch(config-if)#no switchport 
+Switch(config-if)#
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/2, changed state to down
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/2, changed state to up
+
+Switch(config-if)#ip ad
+Switch(config-if)#ip address 192.168.60.2 255.255.255.0
+Switch(config-if)#ex
+Switch(config)#int
+Switch(config)#interface f0/3
+Switch(config-if)#no sw
+Switch(config-if)#no switchport 
+Switch(config-if)#
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/3, changed state to down
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/3, changed state to up
+
+Switch(config-if)#ip ad
+Switch(config-if)#ip address 192.168.70.2 255.255.255.0
+Switch(config-if)#ex
+Switch(config)#ip route 192.168.10.0 255.255.255.0 192.168.50.1
+Switch(config)#ip route 192.168.20.0 255.255.255.0 192.168.60.1
+Switch(config)#ip route 192.168.30.0 255.255.255.0 192.168.60.1
+Switch(config)#ip route 192.168.40.0 255.255.255.0 192.168.70.1
+Switch(config)#end
+Switch#
+%SYS-5-CONFIG_I: Configured from console by console
+
+Switch#show ip route
+Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
+       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
+       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
+       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
+       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
+       * - candidate default, U - per-user static route, o - ODR
+       P - periodic downloaded static route
+
+Gateway of last resort is not set
+
+S    192.168.10.0/24 [1/0] via 192.168.50.1
+S    192.168.20.0/24 [1/0] via 192.168.60.1
+S    192.168.30.0/24 [1/0] via 192.168.60.1
+S    192.168.40.0/24 [1/0] via 192.168.70.1
+C    192.168.50.0/24 is directly connected, FastEthernet0/1
+C    192.168.60.0/24 is directly connected, FastEthernet0/2
+C    192.168.70.0/24 is directly connected, FastEthernet0/3
+
+Switch#
+```
+
+![image-20250417210714045](https://gitee.com/tangyushan123/image/raw/master/img/upgit_20250417_1744895234.png)
+
+![image-20250417210737979](https://gitee.com/tangyushan123/image/raw/master/img/upgit_20250417_1744895258.png)
+
+![image-20250417210758197](https://gitee.com/tangyushan123/image/raw/master/img/upgit_20250417_1744895278.png)
\ No newline at end of file
diff --git "a/19\351\203\221\351\233\250\350\211\257/20250418 RIP\345\212\250\346\200\201\350\267\257\347\224\261.md" "b/19\351\203\221\351\233\250\350\211\257/20250418 RIP\345\212\250\346\200\201\350\267\257\347\224\261.md"
new file mode 100644
index 0000000000000000000000000000000000000000..8857eb85a2edf60c00353a5e841ac9fc509116c5
--- /dev/null
+++ "b/19\351\203\221\351\233\250\350\211\257/20250418 RIP\345\212\250\346\200\201\350\267\257\347\224\261.md"	
@@ -0,0 +1,635 @@
+# 笔记
+
+#### 第一题
+
+路由器1
+
+```cmd
+Router>en
+Router#
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#int
+Router(config)#interface f0/0
+Router(config-if)#no shu
+Router(config-if)#no shutdown 
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
+ 
+Router(config-if)#ip ad
+Router(config-if)#ip address 192.168.10.254 255.255.255.0
+Router(config-if)#ex
+Router(config)#int
+Router(config)#interface f0/1
+Router(config-if)#no shu
+Router(config-if)#no shutdown 
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up
+
+Router(config-if)#ip ad
+Router(config-if)#ip address 10.10.10.1 255.255.255.0
+Router(config-if)#
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
+end
+Router#
+%SYS-5-CONFIG_I: Configured from console by console
+
+Router#show ip route
+Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
+       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
+       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
+       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
+       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
+       * - candidate default, U - per-user static route, o - ODR
+       P - periodic downloaded static route
+
+Gateway of last resort is not set
+
+     10.0.0.0/24 is subnetted, 1 subnets
+C       10.10.10.0 is directly connected, FastEthernet0/1
+C    192.168.10.0/24 is directly connected, FastEthernet0/0
+
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#rou
+Router(config)#router rip
+Router(config-router)#v
+Router(config-router)#version 2
+Router(config-router)#net
+Router(config-router)#network 10.10.10.0
+Router(config-router)#network 192.168.10.0
+Router(config-router)#
+```
+
+路由器2
+
+```cmd
+Router>en
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#
+Router(config)#conf t
+%Invalid hex value
+Router(config)#int
+Router(config)#interface 10.10.10.2 255.255.255.0
+                         ^
+% Invalid input detected at '^' marker.
+	
+Router(config)#interfac
+Router(config)#interface f0/0
+Router(config-if)#ip ad 10.10.10.2 255.255.255.0
+Router(config-if)#ip ad 10.10.10.2 255.255.255.0
+Router(config-if)#no shu
+Router(config-if)#no shutdown 
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
+
+Router(config-if)#ex
+Router(config)#int
+Router(config)#interface f0/1
+Router(config-if)#no shut
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
+
+Router(config-if)#ip ad
+Router(config-if)#ip address 10.10.20.1 255.255.255.0
+Router(config-if)#end
+Router#
+%SYS-5-CONFIG_I: Configured from console by console
+
+Router#show ip route
+Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
+       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
+       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
+       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
+       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
+       * - candidate default, U - per-user static route, o - ODR
+       P - periodic downloaded static route
+
+Gateway of last resort is not set
+
+     10.0.0.0/24 is subnetted, 2 subnets
+C       10.10.10.0 is directly connected, FastEthernet0/0
+C       10.10.20.0 is directly connected, FastEthernet0/1
+
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#rout
+Router(config)#router rip
+Router(config-router)#ve
+Router(config-router)#version 2
+Router(config-router)#net
+Router(config-router)#network 10.10.10.0
+Router(config-router)#network 10.10.20.0
+Router(config-router)#
+
+
+
+
+
+
+
+
+Router con0 is now available
+```
+
+路由器3
+
+```cmd
+Router>en
+Router#show ip route
+Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
+       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
+       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
+       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
+       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
+       * - candidate default, U - per-user static route, o - ODR
+       P - periodic downloaded static route
+
+Gateway of last resort is not set
+
+     10.0.0.0/24 is subnetted, 1 subnets
+C       10.10.20.0 is directly connected, FastEthernet0/0
+C    192.168.20.0/24 is directly connected, FastEthernet0/1
+
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#rou
+Router(config)#router rip
+Router(config-router)#v
+Router(config-router)#version 2
+Router(config-router)#network 10.10.20.0
+Router(config-router)#network 192.168.20.0
+Router(config-router)#end
+Router#
+%SYS-5-CONFIG_I: Configured from console by console
+
+Router#show ip route
+Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
+       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
+       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
+       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
+       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
+       * - candidate default, U - per-user static route, o - ODR
+       P - periodic downloaded static route
+
+Gateway of last resort is not set
+
+     10.0.0.0/24 is subnetted, 2 subnets
+R       10.10.10.0 [120/1] via 10.10.20.1, 00:00:05, FastEthernet0/0
+C       10.10.20.0 is directly connected, FastEthernet0/0
+R    192.168.10.0/24 [120/2] via 10.10.20.1, 00:00:05, FastEthernet0/0
+C    192.168.20.0/24 is directly connected, FastEthernet0/1
+
+Router#
+```
+
+##### 测试结果
+
+![image-20250418173638065](https://gitee.com/tangyushan123/image/raw/master/img/upgit_20250418_1744968998.png)
+
+
+
+#### 第三题
+
+![image-20250418173546761](https://gitee.com/tangyushan123/image/raw/master/img/upgit_20250418_1744968951.png)
+
+三层交换机
+
+```cmd
+Switch>en
+Switch#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Switch(config)#route rip
+Switch(config-router)#ver
+Switch(config-router)#version 2
+Switch(config-router)#net
+Switch(config-router)#network 192.168.10.0
+Switch(config-router)#network 192.168.40.0
+Switch(config-router)#network 10.10.1.0
+
+Switch#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Switch(config)#ip routing
+Switch(config)#route rip
+Switch(config-router)#version 2
+Switch(config-router)#network 10.10.1.0
+Switch(config-router)#network 192.168.40.0
+Switch(config-router)#network 192.168.10.0
+Switch(config-router)#ex^Z
+Switch#
+%SYS-5-CONFIG_I: Configured from console by console
+
+Switch#show ip route
+Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
+       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
+       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
+       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
+       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
+       * - candidate default, U - per-user static route, o - ODR
+       P - periodic downloaded static route
+
+Gateway of last resort is not set
+
+     10.0.0.0/24 is subnetted, 2 subnets
+C       10.10.1.0 is directly connected, FastEthernet0/2
+R       10.10.2.0 [120/1] via 10.10.1.2, 00:00:20, FastEthernet0/2
+C    192.168.10.0/24 is directly connected, Vlan10
+R    192.168.20.0/24 [120/1] via 10.10.1.2, 00:00:20, FastEthernet0/2
+R    192.168.30.0/24 [120/2] via 10.10.1.2, 00:00:20, FastEthernet0/2
+C    192.168.40.0/24 is directly connected, Vlan20
+R    192.168.50.0/24 [120/1] via 10.10.1.2, 00:00:20, FastEthernet0/2
+
+Switch#
+
+
+```
+
+中间那台路由器
+
+```cmd
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#interface f0/1
+Router(config-if)#no shutdown 
+
+Router(config-if)#en
+% Ambiguous command: "en"
+Router(config)#int
+Router(config)#interface f0/0.1
+Router(config-subif)#ex
+Router(config)#no interface f0/0.1
+Router(config)# interface f0/1.1
+Router(config-subif)#
+%LINK-5-CHANGED: Interface FastEthernet0/1.1, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1.1, changed state to up
+Router(config-subif)#encapsulation dot1Q 10
+Router(config-subif)#ip address 192.168.20.254 255.255.255.0
+Router(config-subif)#ex
+Router(config)# interface f0/1.2
+Router(config-subif)#
+%LINK-5-CHANGED: Interface FastEthernet0/1.2, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1.2, changed state to up
+encapsulation dot1Q 20
+Router(config-subif)#ip address 192.168.50.254 255.255.255.0
+Router(config-subif)#ex
+Router(config)#int
+Router(config)#interface f0/0
+Router(config-if)#no shu
+Router(config-if)#no shutdown 
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
+
+Router(config-if)#ip ad
+Router(config-if)#ip address  10.10.1.2 255.255.255.0
+Router(config-if)#ex
+Router(config)#int
+Router(config)#interface f1/0
+Router(config-if)#no shu
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface FastEthernet1/0, changed state to up
+
+Router(config-if)#ip ad
+Router(config-if)#ip address 10.10.2.1 255.255.255.0
+Router(config-if)#no shu
+Router(config-if)#no shutdown 
+Router(config-if)#end
+Router#
+%SYS-5-CONFIG_I: Configured from console by console
+
+Router#show ip route
+Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
+       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
+       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
+       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
+       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
+       * - candidate default, U - per-user static route, o - ODR
+       P - periodic downloaded static route
+
+Gateway of last resort is not set
+
+     10.0.0.0/24 is subnetted, 1 subnets
+C       10.10.1.0 is directly connected, FastEthernet0/0
+C    192.168.20.0/24 is directly connected, FastEthernet0/1.1
+C    192.168.50.0/24 is directly connected, FastEthernet0/1.2
+
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#rou
+Router(config)#router rip
+Router(config-router)#v
+Router(config-router)#version 2
+Router(config-router)#ne
+Router(config-router)#network 10.10.1.0
+Router(config-router)#network 192.168.20.0
+Router(config-router)#network 192.168.50.0
+Router(config-router)#end
+Router#
+%SYS-5-CONFIG_I: Configured from console by console
+
+Router#show ip route
+Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
+       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
+       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
+       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
+       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
+       * - candidate default, U - per-user static route, o - ODR
+       P - periodic downloaded static route
+
+Gateway of last resort is not set
+
+     10.0.0.0/24 is subnetted, 1 subnets
+C       10.10.1.0 is directly connected, FastEthernet0/0
+C    192.168.20.0/24 is directly connected, FastEthernet0/1.1
+C    192.168.50.0/24 is directly connected, FastEthernet0/1.2
+
+Router#
+%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0, changed state to up
+end
+Translating "end"...domain server (255.255.255.255) % Name lookup aborted
+Router#show ip route
+Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
+       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
+       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
+       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
+       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
+       * - candidate default, U - per-user static route, o - ODR
+       P - periodic downloaded static route
+
+Gateway of last resort is not set
+
+     10.0.0.0/24 is subnetted, 2 subnets
+C       10.10.1.0 is directly connected, FastEthernet0/0
+C       10.10.2.0 is directly connected, FastEthernet1/0
+C    192.168.20.0/24 is directly connected, FastEthernet0/1.1
+R    192.168.30.0/24 [120/1] via 10.10.2.2, 00:00:24, FastEthernet1/0
+C    192.168.50.0/24 is directly connected, FastEthernet0/1.2
+
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#
+Router(config)#rou
+Router(config)#router rip
+Router(config-router)#v
+Router(config-router)#version 2
+Router(config-router)#ne
+Router(config-router)#network 10.10.2.0
+Router(config-router)#^Z
+Router#
+%SYS-5-CONFIG_I: Configured from console by console
+
+Router#show ip route
+Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
+       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
+       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
+       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
+       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
+       * - candidate default, U - per-user static route, o - ODR
+       P - periodic downloaded static route
+
+Gateway of last resort is not set
+
+     10.0.0.0/24 is subnetted, 2 subnets
+C       10.10.1.0 is directly connected, FastEthernet0/0
+C       10.10.2.0 is directly connected, FastEthernet1/0
+R    192.168.10.0/24 [120/1] via 10.10.1.1, 00:00:21, FastEthernet0/0
+C    192.168.20.0/24 is directly connected, FastEthernet0/1.1
+R    192.168.30.0/24 [120/1] via 10.10.2.2, 00:00:05, FastEthernet1/0
+R    192.168.40.0/24 [120/1] via 10.10.1.1, 00:00:21, FastEthernet0/0
+C    192.168.50.0/24 is directly connected, FastEthernet0/1.2
+
+Router#
+
+```
+
+右边
+
+```cmd
+Router(config-if)#ex
+Router(config)#int
+Router(config)#interface g0/0.1
+Router(config-subif)#en
+Router(config-subif)#encapsulation fo
+Router(config-subif)#encapsulation do
+Router(config-subif)#encapsulation dot1Q 10
+Router(config-subif)#ip ad
+Router(config-subif)#ip address 192.168.30.254 255.255.255.0
+Router(config-subif)#ex
+Router(config)#int
+Router(config)#interface g0/0  /错了
+	
+Router(config-if)#no shut
+Router(config-if)#no shutdown 
+
+Router(config-if)#
+%LINK-5-CHANGED: Interface GigabitEthernet0/0, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0, changed state to up
+
+%LINK-5-CHANGED: Interface GigabitEthernet0/0.1, changed state to up
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0.1, changed state to up
+
+Router(config-if)#ip ad
+Router(config-if)#ip address 10.10.2.2 255.255.255.0
+Router(config-if)#ex
+Router(config)#end
+Router#
+%SYS-5-CONFIG_I: Configured from console by console
+s
+% Ambiguous command: "s"
+Router#
+Router#show ip route
+Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
+       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
+       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
+       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
+       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
+       * - candidate default, U - per-user static route, o - ODR
+       P - periodic downloaded static route
+
+Gateway of last resort is not set
+
+     10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
+C       10.10.2.0/24 is directly connected, GigabitEthernet0/0
+L       10.10.2.2/32 is directly connected, GigabitEthernet0/0
+     192.168.30.0/24 is variably subnetted, 2 subnets, 2 masks
+C       192.168.30.0/24 is directly connected, GigabitEthernet0/0.1
+L       192.168.30.254/32 is directly connected, GigabitEthernet0/0.1
+
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#rou
+Router(config)#router rip
+Router(config-router)#v
+Router(config-router)#version 2
+Router(config-router)#ne
+Router(config-router)#network 10.10.2.0
+Router(config-router)#network 192.168.30.0
+Router(config-router)#end
+Router#
+%SYS-5-CONFIG_I: Configured from console by console
+
+Router#show ip route
+Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
+       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
+       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
+       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
+       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
+       * - candidate default, U - per-user static route, o - ODR
+       P - periodic downloaded static route
+
+Gateway of last resort is not set
+
+     10.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
+R       10.10.1.0/24 [120/1] via 10.10.2.1, 00:00:03, GigabitEthernet0/0
+C       10.10.2.0/24 is directly connected, GigabitEthernet0/0
+L       10.10.2.2/32 is directly connected, GigabitEthernet0/0
+R    192.168.20.0/24 [120/1] via 10.10.2.1, 00:00:03, GigabitEthernet0/0
+     192.168.30.0/24 is variably subnetted, 2 subnets, 2 masks
+C       192.168.30.0/24 is directly connected, GigabitEthernet0/0.1
+L       192.168.30.254/32 is directly connected, GigabitEthernet0/0.1
+R    192.168.50.0/24 [120/1] via 10.10.2.1, 00:00:03, GigabitEthernet0/0
+
+Router#show ip route
+Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
+       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
+       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
+       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
+       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
+       * - candidate default, U - per-user static route, o - ODR
+       P - periodic downloaded static route
+
+Gateway of last resort is not set
+
+     10.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
+R       10.10.1.0/24 [120/1] via 10.10.2.1, 00:00:18, GigabitEthernet0/0
+C       10.10.2.0/24 is directly connected, GigabitEthernet0/0
+L       10.10.2.2/32 is directly connected, GigabitEthernet0/0
+R    192.168.20.0/24 [120/1] via 10.10.2.1, 00:00:18, GigabitEthernet0/0
+     192.168.30.0/24 is variably subnetted, 2 subnets, 2 masks
+C       192.168.30.0/24 is directly connected, GigabitEthernet0/0.1
+L       192.168.30.254/32 is directly connected, GigabitEthernet0/0.1
+R    192.168.50.0/24 [120/1] via 10.10.2.1, 00:00:18, GigabitEthernet0/0
+
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#^Z
+Router#
+%SYS-5-CONFIG_I: Configured from console by console 
+Router#show ip route
+Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
+       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
+       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
+       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
+       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
+       * - candidate default, U - per-user static route, o - ODR
+       P - periodic downloaded static route
+
+Gateway of last resort is not set
+
+     10.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
+R       10.10.1.0/24 [120/1] via 10.10.2.1, 00:00:26, GigabitEthernet0/0
+C       10.10.2.0/24 is directly connected, GigabitEthernet0/0
+L       10.10.2.2/32 is directly connected, GigabitEthernet0/0
+R    192.168.10.0/24 [120/2] via 10.10.2.1, 00:00:26, GigabitEthernet0/0
+R    192.168.20.0/24 [120/1] via 10.10.2.1, 00:00:26, GigabitEthernet0/0
+     192.168.30.0/24 is variably subnetted, 2 subnets, 2 masks
+C       192.168.30.0/24 is directly connected, GigabitEthernet0/0.1
+L       192.168.30.254/32 is directly connected, GigabitEthernet0/0.1
+R    192.168.40.0/24 [120/2] via 10.10.2.1, 00:00:26, GigabitEthernet0/0
+R    192.168.50.0/24 [120/1] via 10.10.2.1, 00:00:26, GigabitEthernet0/0
+
+Router#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Router(config)#no in
+Router(config)#no interface g0/0.1  /这里才对
+Router(config)#
+%LINK-3-UPDOWN: Interface GigabitEthernet0/0.1, changed state to down
+
+%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0.1, changed state to down
+
+Router(config)#int g0/1 
+Router(config-if)#ip ad
+Router(config-if)#ip address 192.168.30.254 255.255.255.0
+Router(config-if)#exit
+Router(config)#^Z
+Router#
+%SYS-5-CONFIG_I: Configured from console by console
+
+Router#show ip route
+Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
+       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
+       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
+       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
+       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
+       * - candidate default, U - per-user static route, o - ODR
+       P - periodic downloaded static route
+
+Gateway of last resort is not set
+
+     10.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
+R       10.10.1.0/24 [120/1] via 10.10.2.1, 00:00:01, GigabitEthernet0/0
+C       10.10.2.0/24 is directly connected, GigabitEthernet0/0
+L       10.10.2.2/32 is directly connected, GigabitEthernet0/0
+R    192.168.10.0/24 [120/2] via 10.10.2.1, 00:00:01, GigabitEthernet0/0
+R    192.168.20.0/24 [120/1] via 10.10.2.1, 00:00:01, GigabitEthernet0/0
+     192.168.30.0/24 is variably subnetted, 2 subnets, 2 masks
+C       192.168.30.0/24 is directly connected, GigabitEthernet0/1
+L       192.168.30.254/32 is directly connected, GigabitEthernet0/1
+R    192.168.40.0/24 [120/2] via 10.10.2.1, 00:00:01, GigabitEthernet0/0
+R    192.168.50.0/24 [120/1] via 10.10.2.1, 00:00:01, GigabitEthernet0/0
+
+Router#
+
+```
+
+二层交换机
+
+```cmd
+Switch>en
+Switch#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+Switch(config)#int
+Switch(config)#interface f0/2
+Switch(config-if)#sw
+Switch(config-if)#switchport ac
+Switch(config-if)#switchport access vlan 10
+% Access VLAN does not exist. Creating vlan 10
+Switch(config-if)#ex
+Switch(config)#int
+Switch(config)#interface f0/3
+Switch(config-if)#sw
+Switch(config-if)#switchport ac
+Switch(config-if)#switchport access vlan 20
+% Access VLAN does not exist. Creating vlan 20
+Switch(config-if)#ex
+Switch(config)#int
+Switch(config)#interface f0/1
+Switch(config-if)#sw
+Switch(config-if)#switchport m
+Switch(config-if)#switchport mode 
+% Incomplete command.
+Switch(config-if)#switchport mode t
+Switch(config-if)#switchport mode trunk
+```
+
+#### 测试
+
+![image-20250418173613395](https://gitee.com/tangyushan123/image/raw/master/img/upgit_20250418_1744968973.png)
\ No newline at end of file