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Ip route




, , - . - Ethernet, (MAC) (?).

Ip route

, , -, , IP . , . ARP IP .

Ip route 10.6.0.0 255.255.0.0 Serial1 (1)

Ip route 10.7.0.0 255.255.0.0 10.4.0.2 (2)

10.6.0.0/16 Serial1. 10.7.0.0/16 IP 10.4.0.2 10.7.0.0/16. ( S):

S 10.6.0.0 via Serial1

S 10.7.0.0 [1/0] via 10.4.0.2

, , , . , , .

, Ethernet (2) ip route. Ethernet , , Ethernet . ip route IP ARP .

 

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, . (last resort). , . . .. , , .

.

IP 0.0.0.0 0.0.0.0,

ip route 0.0.0.0 0.0.0.0 [ | ]

. .

 

IP . (loopback). . - , loopback, . interface loopbackN int lN, N .

Router(conf)> int l0 1.1.1.1 255.0.0.0

 

trace

trace , . ICMP, ping, , . trace (Time To Live, TTL). . trace , . . trace

1.

!H , , -
P
N
U
*

 

 

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ARP

1. Router1 ARP

Router1# show arp

MAC Ethernet IP 10.1.1.1.

2. router2 ARP . MAC Ethernet IP 10.1.1.2

3. Ethernet Router1

Router2#ping 10.1.1.1

4. ARP . . MAC Ethernet Router1 IP 10.1.1.1.

5. router1 ARP .

MAC Ethernet Router2 IP 10.1.1.2. , Router1 IP ? , Router1 Router2 MAC Ethernet Router2 IP 10.1.1.2, ARP .

 

Router2 Router4 - . .

1. router2. 172.16.10.1 172.16.10.2.

Router2# show ip route

 

. 172.16.10.0/24. 172.16.10.0/24 10.1.1.1 :

Router2(config)# ip route 172.16.10.0 255.255.255.0 10.1.1.1

172.16.10.0/24 - 172.16.10.0 255.255.255.0. 255.255.255.0 24 , /24.

2. serial Router1

Router2# ping 172.16.10.1

3. serial Router4.

Router2# ping 172.16.10.2

? , ICMP , Router4, Router4 .

4. router4.

Router4# show ip route

10.1.1.0/24. 10.1.1.0/24 172.16.10.1 :

Router4(config)# ip route 10.1.1.0 255.255.255.0 172.16.10.1

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5. . .

 





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