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缺省路由(默认路由)

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缺省路由属于特殊的静态路由
PC的网关其实就是一种缺省路由
缺省路由属于“替补路由”,只有当其他的路由不可达时才会使用缺省路由
缺省路由适用于边缘节点,以及企业出口

PC1(配置IP地址)
IP地址:10.1.1.2
子网掩码:255.255.255.0
网关:10.1.1.1
PC2(配置IP地址)
IP地址:10.1.1.3
子网掩码:255.255.255.0
网关:10.1.1.1
百度(配置IP地址)
IP地址:30.3.3.2
子网掩码:255.255.255.0
网关:30.3.3.1
搜狐(配置IP地址)
IP地址:40.4.4.2
子网掩码:255.255.255.0
网关:40.4.4.1
R1(设置IP地址)
<Huawei>system-view     //进入全局配置模式
[Huawei]undo info-center enable     //关闭信息告警
[Huawei]sysname R1     //改名
[R1]interface e0/0/0     //进入接口
[R1-Ethernet0/0/0]ip address 10.1.1.1 24     //设置IP地址
[R1-Ethernet0/0/0]quit     //退出
[R1]interface e0/0/1     //进入接口
[R1-Ethernet0/0/1]ip address 20.2.2.1 24     //设置IP地址
[R1-Ethernet0/0/1]quit     //退出
[R1]
R2(设置IP地址)
<Huawei>system-view     //进入全局配置模式
[Huawei]undo info-center enable     //关闭信息告警提示
[Huawei]sysname R2     //改名
[R2]interface e0/0/1     //进入接口
[R2-Ethernet0/0/1]ip address 30.3.3.1 24     //设置IP地址
[R2-Ethernet0/0/1]quit     //退出
[R2]interface e0/0/0     //进入接口
[R2-Ethernet0/0/1]ip address 40.4.4.1 24     //设置IP地址
[R2-Ethernet0/0/1]quit     //退出
[R2]interface g0/0/0     //进入接口
[R2-GigabitEthernet0/0/0]ip address 20.2.2.2 24     //设置IP地址
[R2-GigabitEthernet0/0/0]quit     //退出
[R2]
R1(配置默认路由,缺省路由)缺省路由适用于边缘节点,以及企业出口
[R1]ip route-static 0.0.0.0 0 20.2.2.2     //配置缺省路由
R2(配置静态路由)
[R2]ip route-static 10.1.1.0 24 20.2.2.1     //配置默认路由
PC1(测试是否可以ping通百度和搜狐)
PC>ping 30.3.3.2     //测试是否可以ping通百度

Ping 30.3.3.2: 32 data bytes, Press Ctrl_C to break
From 30.3.3.2: bytes=32 seq=1 ttl=126 time=141 ms     //ping通
From 30.3.3.2: bytes=32 seq=2 ttl=126 time=78 ms
From 30.3.3.2: bytes=32 seq=3 ttl=126 time=110 ms
From 30.3.3.2: bytes=32 seq=4 ttl=126 time=94 ms
From 30.3.3.2: bytes=32 seq=5 ttl=126 time=94 ms

--- 30.3.3.2 ping statistics ---
  5 packet(s) transmitted
  5 packet(s) received
  0.00% packet loss
  round-trip min/avg/max = 78/103/141 ms

PC>ping 40.4.4.2     //测试是否可以ping通搜狐

Ping 40.4.4.2: 32 data bytes, Press Ctrl_C to break
From 40.4.4.2: bytes=32 seq=1 ttl=126 time=124 ms     //ping通
From 40.4.4.2: bytes=32 seq=2 ttl=126 time=93 ms
From 40.4.4.2: bytes=32 seq=3 ttl=126 time=62 ms
From 40.4.4.2: bytes=32 seq=4 ttl=126 time=78 ms
From 40.4.4.2: bytes=32 seq=5 ttl=126 time=78 ms

--- 40.4.4.2 ping statistics ---
  5 packet(s) transmitted
  5 packet(s) received
  0.00% packet loss
  round-trip min/avg/max = 62/87/124 ms

PC>
PC2(测试是否可以ping通百度和搜狐)
PC>ping 30.3.3.2     //测试是否可以ping通百度

Ping 30.3.3.2: 32 data bytes, Press Ctrl_C to break
From 30.3.3.2: bytes=32 seq=1 ttl=126 time=141 ms     //ping通
From 30.3.3.2: bytes=32 seq=2 ttl=126 time=78 ms
From 30.3.3.2: bytes=32 seq=3 ttl=126 time=110 ms
From 30.3.3.2: bytes=32 seq=4 ttl=126 time=94 ms
From 30.3.3.2: bytes=32 seq=5 ttl=126 time=94 ms

--- 30.3.3.2 ping statistics ---
  5 packet(s) transmitted
  5 packet(s) received
  0.00% packet loss
  round-trip min/avg/max = 78/103/141 ms

PC>ping 40.4.4.2     //测试是否可以ping通搜狐

Ping 40.4.4.2: 32 data bytes, Press Ctrl_C to break
From 40.4.4.2: bytes=32 seq=1 ttl=126 time=124 ms     //ping通
From 40.4.4.2: bytes=32 seq=2 ttl=126 time=93 ms
From 40.4.4.2: bytes=32 seq=3 ttl=126 time=62 ms
From 40.4.4.2: bytes=32 seq=4 ttl=126 time=78 ms
From 40.4.4.2: bytes=32 seq=5 ttl=126 time=78 ms

--- 40.4.4.2 ping statistics ---
  5 packet(s) transmitted
  5 packet(s) received
  0.00% packet loss
  round-trip min/avg/max = 62/87/124 ms

PC>


转载:https://blog.csdn.net/Yang__Qi/article/details/102461922
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