1.沒配RIP之前
PC1只能ping通 R1 f0.0 192.168.0.1
PC2不能ping通 R2 f0.0 192.168.0.2
有同學要問,不是192.168.0.1與192.168.0.2 都是192.168.0.0網絡麼?
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 192.168.0.0/24 is directly connected, FastEthernet0/0
C 192.168.2.0/24 is directly connected, FastEthernet0/1
R1#show ip interface brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 192.168.0.1 YES manual up up
FastEthernet0/1 192.168.2.1 YES manual up up
R1#
R2#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 192.168.0.0/24 is directly connected, FastEthernet0/0
C 192.168.1.0/24 is directly connected, FastEthernet0/1
R2#show ip interface brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 192.168.0.2 YES manual up up
FastEthernet0/1 192.168.1.1 YES manual up up
R2#
PC1#traceroute 192.168.1.2
Type escape sequence to abort.
Tracing the route to 192.168.1.2
1 192.168.2.1 36 msec 32 msec 28 msec
2 192.168.2.1 !H !H !H
PC1#ping 192.168.0.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.0.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 16/20/24 ms
PC1#ping 192.168.0.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.0.2, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
PC1#
PC2#traceroute 192.168.2.2
Type escape sequence to abort.
Tracing the route to 192.168.2.2
1 192.168.1.1 1072 msec 72 msec 112 msec
2 192.168.1.1 !H !H !H
PC2#ping 192.168.0.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.0.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 12/36/60 ms
PC2#ping 192.168.0.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.0.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
PC2#
ping不通,因爲,R1中路由表中沒有路徑.
2.如果R1中配了RIP ,R2中沒配RIP,那也ping不通,電路是雙向的.
3. R1與R2,RIP配好,雙方都能ping通.
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 192.168.0.0/24 is directly connected, FastEthernet0/0
S 192.168.1.0/24 [1/0] via 192.168.0.2
C 192.168.2.0/24 is directly connected, FastEthernet0/1
R1#
R2#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 192.168.0.0/24 is directly connected, FastEthernet0/0
C 192.168.1.0/24 is directly connected, FastEthernet0/1
S 192.168.2.0/24 [1/0] via 192.168.0.1
R2#
PC1#traceroute 192.168.1.2
Type escape sequence to abort.
Tracing the route to 192.168.1.2
1 192.168.2.1 36 msec 20 msec 12 msec
2 192.168.0.2 28 msec 52 msec 40 msec
3 192.168.1.2 40 msec 40 msec 32 msec
PC1#
PC2#traceroute 192.168.2.2
Type escape sequence to abort.
Tracing the route to 192.168.2.2
1 192.168.1.1 8 msec 20 msec 52 msec
2 192.168.0.1 40 msec 60 msec 36 msec
3 192.168.2.2 116 msec 108 msec 88 msec
PC2#