基于区域的OSPF MD5认证（cisco packet tracer 5.3）

丹调生活

　　1》开启R1和R2的OSPF进程
　　2》R1(config-router)#area 0 authentication message-digest //区域0启用MD5认证
　　R1(config)#interface s0/3/0

　　R1(config-if)#ip ospf message-digest-key 1 md5 cisco//配置认证key>　　3》R2(config-router)#area 0 authentication message-digest //区域0启用MD5认证
　　R2(config)#interface s0/3/0

　　R2(config-if)#ip ospf message-digest-key 1 md5 cisco//配置认证key>　　4》实验调试
　　◆Router#show ip ospf interface s0/3/0
　　Serial0/3/0 is up, line protocol is up
　　Internet address is 192.168.12.1/24, Area 0

　　Process>　　Transmit Delay is 1 sec, State POINT-TO-POINT, Priority 0
　　No designated router on this network
　　No backup designated router on this network
　　Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
　　Hello due in 00:00:07
　　Index 2/2, flood queue length 0
　　Next 0x0(0)/0x0(0)
　　Last flood scan length is 1, maximum is 1
　　Last flood scan time is 0 msec, maximum is 0 msec
　　Neighbor Count is 1 , Adjacent neighbor count is 1
　　Adjacent with neighbor 2.2.2.2
　　Suppress hello for 0 neighbor(s)
　　Message digest authentication enabled

　　Youngest key>　　最后两行信息表明该接口启用了MD5认证，而且密钥ID为1
　　◆Router#show ip ospf

　　Routing Process "ospf 1" with>　　Supports only single TOS(TOS0) routes
　　Supports opaque LSA
　　SPF schedule delay 5 secs, Hold time between two SPFs 10 secs
　　Minimum LSA interval 5 secs. Minimum LSA arrival 1 secs
　　Number of external LSA 0. Checksum Sum 0x000000
　　Number of opaque AS LSA 0. Checksum Sum 0x000000
　　Number of DCbitless external and opaque AS LSA 0
　　Number of DoNotAge external and opaque AS LSA 0
　　Number of areas in this router is 1. 1 normal 0 stub 0 nssa
　　External flood list length 0
　　Area BACKBONE(0)
　　Number of interfaces in this area is 2
　　Area has message digest authentication
　　SPF algorithm executed 2 times
　　Area ranges are
　　Number of LSA 2. Checksum Sum 0x00dc42
　　Number of opaque link LSA 0. Checksum Sum 0x000000
　　Number of DCbitless LSA 0
　　Number of indication LSA 0
　　Number of DoNotAge LSA 0
　　Flood list length 0
　　输出结果中加粗的这一行表明区域0采用了MD5认证。
　　实验结束，谢谢大家！