|
Fastethernet0/0 |
Fastethernet1/0 |
R1 |
192.168.12.1/24 |
N/A |
R2 |
192.168.12.2/24 |
192.168.23.2/24 |
R3 |
192.168.23.3/24 |
N/A |
1. R1、R2、R3配置接口ip地址,实现设备互联的通信。
2. 在R1配置一条去往R3静态路由条目,以下一跳地址方式将数据发送出去
3. 在R3配置一条去往R1默认路由条目,以自己出接口方式将数据发送出去
1) 先配R1、R2、R3接口地址,实现设备互连通信。
(config)#interface fastEthernet 0/0
(config-if)#ip address x.x.x.x x.x.x.x
2) 在R1上配置静态路由条目去往R3
(config)#ip route 192.168.23.0 255.255.255.0 192.168.12.2
或
(config)#ip route 192.168.23.0 255.255.255.0 fastethernet0/0
3) 在R3上配置默认路由条目去往R1
(config)#ip route 0.0.0.0 0.0.0.0 192.168.23.2
或
(config)#ip route 0.0.0.0 0.0.0.0 fastethernet0/0
1) 先查看R1是否有去往R3的路由条目:
R1#show ip route
Codes: 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
i - IS-IS, su - IS-IS summary, 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 192.168.12.0/24 is directly connected, FastEthernet0/0
S 192.168.23.0/24 [1/0] via 192.168.12.2
/上面显示的S表示去往R3网段的静态路由条目,以下一跳的方式把数据发送出去,且S代表static/
2) 查看R3去往R1的路由条目:
R3#show ip route
Codes: 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
i - IS-IS, su - IS-IS summary, 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 0.0.0.0 to network 0.0.0.0
C 192.168.23.0/24 is directly connected, FastEthernet0/0
S* 0.0.0.0/0 is directly connected, FastEthernet0/0
/上面显示的S*表示的是默认路由条目,且以出接口的方式将数据发送出去/
3) 测试R1与R3能否通信:
R1#ping 192.168.23.3
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.23.3, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 32/46/60 ms
/上面显示能相互通信/
1)静态路由的命令:
ip route x.x.x.x x.x.x.x fastethernet x/x 该接口为自己设备上的出端口
ip route x.x.x.x x.x.x.x x.x.x.x ,下一跳地址即是在该设备上相连的对端设备接口地址//
2) 路由表中用S显示的就是静态路由,若是S*则表示的是默认路由。
3)默认路由也是包含在静态路由中,是一目的网段为全网的静态路由。
4)静态路由的AD值为1。
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