使用RIP协议处理不连续的子网和VLSM(2)

ZDNET网络频道时间2007-09-03作者:中国IT实验室 |
本文关键词:RIP RIP协议 rip路由协议 路由协议 网络协议

监测清单5-2使用RIP协议处理VLSM和配置被动接口

    第1段:RIPv1配置下的路由表

    R3#sh ip route RIP

      172.16.0.0/30 is subnetted, 3 subnets

    第2段:配置RIPv2和no summary

    R3#conft

    Enter configuration commands, one per line. End with CNTL/Z.

    R3(config)#router RIP

    R3(config-router)#ver 2

    R3 (config-router)#no auto-summary

    Term_Server>2

    [Resuming connection 2 to R2 ... ]

  

    R2#conf t

    Enter configuration commands, one per line. End with CNTL/Z.

    R2(config)#router RIP

    R2(config-router)#ver 2

    R2(config-router)#no auto-summary

    Term_Server> 1

    [Resuming connection 1 to R1 ... ]

    

    R1#conft

    Enter configuration commands, one per line. End with CNTL/Z.

    R1(config)#router RIP

    R1(config-router)#ver 2

    R1 (config-router)#no auto-summary

    R1(config-rotuer)#end

    R1#

    R1#sh ip prot

    Routing Protocol is "RIP"

     Sending updates every 30 seconds, next due in 5 seconds

     Invalid after 180 seconds, hold down 180, flushed after 240

     Outgoing update filter list for all interfaces is

     Incoming update filter list for all interfaces is

    Redistributing: RIP

    Default version control: send version 2, receive version 2

     Interface     Send Recv Triigered RIP Key-chain

     Ethemet0       2   2

     Serial0       2   2

     Serial1       2   2

    Automatic network summarization is not in effect

    Routing for Networks:

     172.16.0.0

     172.18.0.0 

    Routing Information Sources: 

    Gateway     Distance    Last Update 

     172.16.123.6   120       00:00:06 

     172.16.123.2   120       00:00:04

    Distance: (default is 120)

    R1#sh ip route RIP

      172.16.0.0/30 is subnetted, 3 subnets

    R   172.16.123.8 [120/1] via 172.16.123.2, 00:00:06, Serial0

              [120/1] via 172.16.123.6, 00:00:22, Serial1

      172.18.0.0/16 is variably subnetted, 3 subnets, 2 masks

    R   172.18,2,0/28 [120/1] via 172.16.123.2,00:00:06,SerialO

    R   172.18J.O/24 [120/1] via 172.16.123.6, 00:00:22, Serial1

    第3段:配置 passive interface

    R1#debug ip RIP

    RIP protocol debugging is on

    R1#

    02:59:47: RIP: received v2 update from 172.16.123.6 on Serial1

    02:59:47:   172.16.123.8/30 via 0.0.0.0 in 1 hops

    02:59:47:   172.18.2.0/28 via 0.0.0.0 in 1 hops

    02:59:47:   172.18.3.0/24 via 0.0.0.0 in 1 hops

    R1#

    02:59:51: RIP: sending v2 update to 224.0.0.9 via Ethernet 0(172.18.1.1)

    02:59:51: RIP: build update entries

    02:59:51: 172.16.123.0/30 via 0.0.0.0, metric 1, tag 0

    02:59:51: 172.16.123.4/30 via 0.0.0.0, metric 1, tag 0

    02:59:51: 172.16.123.8/30 via 0.0.0,0, metric 2, tag 0

    02:59:51: 172.18.2.0/28 via 0.0.0.0, metric 2,tab 0

    02:59:51: 172.183.0/24 via0.0.0.0,metric 2,tag 0

    02:59:51: RIP: sendiag v2 update to 224.0.:0.9viaSaialC-172.15.t23.1)

    02:59:51: RIP: build update entries

    02:59:51: 172.16.123.4/30 via 0.0.0.0, metric 1, tag 0

    02:59:51: 172.18.1.0/28 via 0.0.0.0, metric 1, tag 0

    02:59:51: 172.18.3.0/24 via 0.0.0.0, metric 2, tag 0

    R1#

    02:59:51: RIP: sending v2 update to 224.0.0.9 via Serial1(172.16.123.5)

    02:59:51: RIP: build update entries

    02:59:51: 172.16.123.0/30 via 0.0.0.0, metric 1, tag 0

    02:59:51: 172.18.1.0/28 via 0.0.0.0, metric 1, tag 0

    02:59:51: 172.18.2.0/28 via 0.0.0.0, metric 2, tag 0

    R1#u all

    All possible debugging has been turned off

    R1#conft

    Enter configuration commands, one per line. End with CNTL/Z.

    R1(config)#router RIP

    R1(config-router)passive-interface ?

     Ethernet IEEE 802.3

     Null   Null interface

     Serial  Serial

     default  Suppres s routing updates. on all interfaces

     

    

    R1 (config-router)passive-interface e0

    R1(config-router)#passive-interface s0

    R1(config-router#^Z

    R1#debugipRIP

    RIP protocol debugging is on

    R1#

    03:00:54: RIP: received v2 update from 172.16.123.2 on Serial0

    03:00:54:   172.16.123.8/30 via 0.0.0.0 in 1 hops

    03:00:54:   172.18.2.0/28 via 0.0.0.0 in 1 hops

    03:00:54:   172.18.3.0/24 via 0.0.0.0 in 2 hops

    R1#

    3:00:56:RIP:sending v2 flash update to 224.0.0.9 via Serial1(172.16.123.5)

    03:00:56: RIP: build flash update entries

    03:00:56: 172.18.2.0/28 via 0.0.0.0, metric 2, tag 0

    R1#

    03:01:12:RIP:received v2 update from 172.16.123.6 on Serial1

    03:01:12: 172.16.123.8/30 via0.0.0.0 in 1 hops

    03:01:12: 172.18.2.0/28 via 0.0.0.0 in 2 hops

    03:01:12: 172.18.3.0/24 via 0.0.0.0 in 1 hops

    R1#

    03:01:17:RIP:sending v2 flash update to 224.0.0.9 via Serial1(172.16.123.5)

    03:01:17: RIP: build update entries

    03:01:17: 172.16.123.0/30 via 0.0.0.0, metric 1, tag 0

    03:01:17: 172.18.1.0/28 via 0.0.0.0,. metric 1,tag 0

    03:01:17: 172.18.2.0/28 via 0.0.0.0, metric 2, tag 0

    R1#

    03:01:23:RIP:received v2 update from 172.16.123.2 on Serial1

    03:01:23:   172.16.123.8/30 via 0.0.0.0 in 1 hops

    03:01:23:   172.18.2.0/28 via 0.0.0.0 in 1 hops

    03:01:23:   172.18.3.0/24 via 0.0.0.0 in 2 hops

    R1#conft

    Enter configuration commands, one per line. End with CNTL/Z.

    R1(config)#router RIP

    R1 (config-router)#passive-mterface default

    R1(config-router#^Z

    R1#

    Term_Server>2

    [Resuming connection 2 to R2 ... ]

  

    R2#cle ip route *

    R2#

    Term_Server>3

    [Resuming connection 3 to R3 ... ]

    R3#cle ip route *

    R3#

    Term_Server>1

    [Resuming connection 1 to R1... ]

    R1#sh ip route RIP

      172.16.0.0/30 is subnetted,3 subnets

    R   172.16.123.8[120/1]via 172.16.123.2,00:00:09,Serial1

              [120/1]via 172.16.123.6,00:00:17,Serial0

      172.18.0.0/16 is variably subnetted,3 subnets,2 masks

    R   172.18.2.0/28[120/1] via 172.16.123.2,00:00:17,Serial0

    R   172.18.3.0/24[120/1] via 172.16.123.6,00:00:09,Serial1

    R1#

    Term_Server>2

    [Resuming connection 2 to R2...]

  

    R2#

    R2#sh ip route RIP

      172.16.0.0/30 is subnetted,3 subnets

    R   172.16.123.4[120/1]via 172.16.123.10,00:00:24,Serial1

      172.18.0.0/16 is variably subnetted,2 subnets,2 masks

    R   172.18.3.0/24[120/1] via 172.16.123.10,00:00:24,Serial1

    R2#

    Term_Server>3

    [Resuming connection 3 to R3...]

    R3#sh ip route RIP

      172.16.0.0/30 is subnetted,3 subnets

      172.18.0.0/16 is variably subnetted,2 subnets,2 masks

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