Cisco基础【路由器】静态路由与默认路由
实现PC1 与 PC2 的通信
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Router>enable
Router#
Router#conf t
Router(config)#inter f 0/0
Router(config-if)#ip address 192.168.10.254 255.255.255.0
Router(config-if)#no shut
Router(config-if)#exit
Router(config)#
Router(config)#inter s 0/0/0
Router(config-if)#ip address 192.168.1.1 255.255.255.0
Router(config-if)#clock rate 64000
Router(config-if)#no shut
Router(config-if)#exit
etected at '^' marker.
Router(config-if)#exit
Router(config)#
Router#
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
//两条直连路由
C 192.168.1.0/24 is directly connected, Serial0/0/0
C 192.168.10.0/24 is directly connected, FastEthernet0/0
Router#
R2：
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Router>enable
Router#conf t
Enter configuration commands, one per line.End with CNTL/Z.
Router(config)#inter f 0/0
Router(config-if)#ip address 192.168.20.254 255.255.255.0
Router(config-if)#no shut
Router(config-if)#exit
Router(config)#
Router(config)#inter s 0/0/0
Router(config-if)#ip address 192.168.1.2 255.255.255.0
Router(config-if)#no shut
Router(config-if)#
Router(config-if)#exit
Router(config)#end
Router#
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
//两条直连路由
C 192.168.1.0/24 is directly connected, Serial0/0/0
C 192.168.20.0/24 is directly connected, FastEthernet0/0
Router#
PC 1 ping PC 2
Ping不通，目标主机不可达。路由器无法将192.168.10.0的数据包传送出去。
配置静态路由
R 1:
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Router#conf t
//配置静态路由，格式为： ip route 目的网段 子网掩码 吓一跳地址
Router(config)#ip route 192.168.20.0 255.255.255.0 192.168.1.2
Router(config)#exit
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 192.168.1.0/24 is directly connected, Serial0/0/0
C 192.168.10.0/24 is directly connected, FastEthernet0/0
S 192.168.20.0/24 via 192.168.1.2 //出现去往192.168.20.0的网络
Router#
R2：
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Router(config)#
Router(config)#ip route 192.168.10.0 255.255.255.0 192.168.1.1
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
C 192.168.1.0/24 is directly connected, Serial0/0/0
S 192.168.10.0/24 via 192.168.1.1 //有去往192.168.10.0的网络了
C 192.168.20.0/24 is directly connected, FastEthernet0/0
Router#
PC1 ping PC 2
PC 2 ping PC1
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