/31位掩码实验演示
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注意：/31位掩码只能用在点对点链路上
topo: R1====R2=====R3
R1#sh run hostname R1 interface Serial1/1 ip address 192.168.1.2 255.255.255.254 router rip version 2 network 192.168.1.0 no auto-summary ============================================== R2#show running-config hostname R2 interface Serial1/0 ip address 192.168.1.3 255.255.255.254 serial restart-delay 0 ! interface Serial1/1 ip address 192.168.2.1 255.255.255.0 serial restart-delay 0 router rip version 2 network 192.168.1.0 network 192.168.2.0 no auto-summary =============================================== R3#sh running-config hostname R3 interface Serial1/0 ip address 192.168.2.2 255.255.255.0 serial restart-delay 0 router rip version 2 network 192.168.2.0 no auto-summary ================================================ 实验验证: R1#ping 192.168.1.3 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 192.168.1.3, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 48/77/124 ms ================================================ R3#ping 192.168.1.2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 192.168.1.2, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 120/132/144 ms ================================================ 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 not set 192.168.1.0/31 is subnetted, 1 subnets R 192.168.1.2 [120/1] via 192.168.2.1, 00:00:05, Serial1/0 C 192.168.2.0/24 is directly connected, Serial1/0 本文出自 “MY Internetwork Tech” 博客，请务必保留此出处http://allens21.blog.51cto.com/103334/52829 本文出自 51CTO.COM技术博客 |
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