CCNA第四天(路由器远程连接,手动添加路由表)

本文详细介绍了CCNA课程中关于路由器远程连接的步骤,包括拓扑结构、命令使用、IP配置、路由器设置及注意事项。同时,探讨了手动添加路由表的流程,涵盖拓扑设计、静态路由协议、IP配置、实验思路和具体路由器配置,帮助理解路由表的添加和连接状况。

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一.路由器远程连接

1.1拓扑结构

这里写图片描述

1.2使用命令

(config)# username 名字 password 密码
(config)# line vty 0 4
(config)# login local

1.3IP配置

电脑IP
pc0192.168.1.1

1.4路由器设置

Router(config)#int f0/0
Router(config-if)#ip add 192.168.1.254 255.255.255.0
Router(config-if)#no sh

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)#username taiyuan pa
Router(config-if)#username taiyuan password 111
Router(config)#line vty 0 4
Router(config-line)#login local
Router(config-line)#^Z
Router#
%SYS-5-CONFIG_I: Configured from console by console

Router#wr
Building configuration...
[OK]
Router#

1.5连接效果

这里写图片描述

1.6注意事项

  • 路由器不设密码的话远程不可登陆

二.手动添加路由表

2.1拓扑结构

这里写图片描述

2.2使用命令

静态路由协议

(config)# IP route 目标网络 子网掩码 下一跳地址

# show ip route 查看路由表 

2.3IP,网段配置

设备IP掩码网关DNS
PC0192.168.1.1255.255.255.0192.168.1.254192.168.4.1
Server0192.1684.1255.255.255.0192.168.4.254192.168.4.1
Server0192.1684.2255.255.255.0192.168.4.254192.168.4.1

路由器

RouterF0/0F0/1
Router0192.168.1.254192.168.2.1
Router1192.168.2.2192.168.3.1
Router2192.168.3.2192.168.4.25

2.4实验思路

  1. 先设置网
  2. 分配IP
  3. 给路由器设置网关
  4. 手动添加路由表
    (config)#ip route 目的网络 掩码 下一跳地址
  5. 查询路由表
    # show ip route

2.5路由器配置

Router0
Router(config)#int f0/0
Router(config-if)#ip add 192.168.1.254 255.255.255.0
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)#int f0/1
Router(config-if)#ip add 192.168.2.1 255.255.255.252
Router(config-if)#no shutdown 

Router(config-if)#
%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up

Router(config-if)#ip route 192.168.3.0 255.255.255.252 192.168.2.2
Router(config)#ip route 192.168.4.0 255.255.255.252 192.168.2.2
Router(config)#^Z
Router#
%SYS-5-CONFIG_I: Configured from console by console

///*当我们把所有的路由表全部*/
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    192.168.1.0/24 is directly connected, FastEthernet0/0
Router#
Router#
Router1
Router(config)#int f0/0
Router(config-if)#ip add 192.168.2.2 255.255.255.252
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)#int f0/1
Router(config-if)#ip add 192.168.3.1 255.255.225.252
Router(config-if)#no sh

Router(config-if)#
%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up

Router(config-if)#ip route 192.168.1.0 255.255.255.0 192.168.2.1
Router(config)#ip route 192.168.4.0 255.255.255.0 192.168.3.2
Router(config)#^Z

Router#

%SYS-5-CONFIG_I: Configured from console by console

Router#wr
Building configuration...
[OK]
Router#
Router2

Router(config)#int f0/0
Router(config-if)#ip add 192.168.3.2 255.255.255.252
Router(config-if)#no sh
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)#int f0/1
Router(config-if)#ip add 192.168.4.254 255.255.255.0
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)#
Router(config-if)#ip route 192.168.1.0 255.255.255.0 192.168.3.1
Router(config)#ip route 192.168.2.0 255.255.255.0 192.168.3.1
Router(config)#^Z
Router#

%SYS-5-CONFIG_I: Configured from console by console

Router#
Router#wr
Building configuration...
[OK]

2.6添加情况


///*当路由表全部添加完毕,则显示下面*/

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    192.168.1.0/24 [1/0] via 192.168.3.1
S    192.168.2.0/24 [1/0] via 192.168.3.1
     192.168.3.0/30 is subnetted, 1 subnets
C       192.168.3.0 is directly connected, FastEthernet0/0
C    192.168.4.0/24 is directly connected, FastEthernet0/1

Router#

2.7连接情况

这里写图片描述

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