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华为路由交换VRRP配置

2020-06-25 21:22:06栏目 : 路由器评测围观 : 3519次

 

学习目的

  了解帧中继中PVC的功能

  理解帧中继协议的工作原理

  掌握在串行链路上配置FrameRelay的方法

  掌握在帧中继网络上手动定义IP与DLCI号码映射的方法

  掌握在帧中继网络上运行RIP的配置方法

  掌握在帧中继网络上运行OSPF的配置方法


拓扑图

  

 

场景

  你是公司的网络管理员,公司总部有一台路由器R1、R2和R3分别是其它两个分部的路由器。现在需要将总部和分部连接到同一网络。广域网链路上尝试使用帧中继协议,在定义FR的DLCI与IP地址对应关系时采用了不同的二层和三层地址映射方式。

  学习任务

  步骤一.进本配置与IP编址

  [Huawei]sysname R1

  [R1]interface s1/0/0

  [R1-Serial1/0/0]ip add 10.0.12.1 24

  [R1-Serial1/0/0]desc this port connectR2-S1/0/0

  [R1-Serial1/0/0]interface loopback0

  [R1-LoopBack0]ip add 10.0.1.1 24

  [R1-LoopBack0]q

  [R1]

  [Huawei]sysname R2

  [R2]interface s1/0/0

  [R2-Serial1/0/0]ip add 10.0.12.2 24

  [R2-Serial1/0/0]desc this port connect toR1-S1/0/0

  [R2-Serial1/0/0]interface s2/0/0

  [R2-Serial2/0/0]ip add 10.0.23.2 24

  [R2-Serial2/0/0]desc this port connect toR3-S2/0/0

  [R2-Serial2/0/0]interface loopback0

  [R2-LoopBack0]ip add 10.0.2.2 24

  [R2-LoopBack0]q

  [Huawei]sysname R3

  [R3]interface s2/0/0

  [R3-Serial2/0/0]ip add 10.0.23.3 24

  [R3-Serial2/0/0]

  Jul 3 2014 16:26:59-05:13 R3 %%01IFNET/4/LINK_STATE(l)[2]:The line protocolPPP

  IPCP on the interface Serial2/0/0 hasentered the UP state.

  [R3-Serial2/0/0]desc this port connect toR2-S2/0/0

  [R3-Serial2/0/0]interface loopback0

  [R3-LoopBack0]ip add 10.0.3.3 24

  [R3-LoopBack0]q

  完成后测试网络的连通性。

  [R2]ping 10.0.12.1

  PING 10.0.12.1: 56 data bytes,press CTRL_C to break

  Reply from 10.0.12.1: bytes=56 Sequence=1 ttl=255 time=40 ms

  Reply from 10.0.12.1: bytes=56 Sequence=2 ttl=255 time=10 ms

  Reply from 10.0.12.1: bytes=56 Sequence=3 ttl=255 time=20 ms

  Reply from 10.0.12.1: bytes=56 Sequence=4 ttl=255 time=10 ms

  Reply from 10.0.12.1: bytes=56 Sequence=5 ttl=255 time=20 ms

  ---10.0.12.1 ping statistics ---

  5packet(s) transmitted

  5packet(s) received

  0.00% packet loss

  round-trip min/avg/max = 10/20/40 ms

  [R2]ping -c 1 10.0.23.3

  PING 10.0.23.3: 56 data bytes,press CTRL_C to break

  Reply from 10.0.23.3: bytes=56 Sequence=1 ttl=255 time=30 ms

  ---10.0.23.3 ping statistics ---

  1packet(s) transmitted

  1packet(s) received

  0.00% packet loss

  round-tripmin/avg/max = 30/30/30 ms

  步骤二.配置R1与R2之间使用帧中继的背靠背形式,使用静态地址映射。

  配置帧中继时,串口线缆的DCE端与DTE端配置不同,首先查看时R1还是R2连接到串口线缆的DCE段。

  dis inter s1/0/0

  Serial1/0/0 current state : UP

  Line protocol current state : UP

  Last line protocol up time : 2014-07-0316:22:58 UTC-05:13

  Description:this port connect R2-S1/0/0

  Route Port,The Maximum Transmit Unit is1500, Hold timer is 10(sec)

  Internet Address is 10.0.12.1/24

  Link layer protocol is PPP

  LCP opened, IPCP opened

  Last physical up time : 2014-07-03 16:20:52 UTC-05:13

  Last physical down time : 2014-07-0316:15:31 UTC-05:13

  Current system time: 2014-07-0316:30:44-05:13

  Physical layer is synchronous,Virtualbaudrate is 64000 bps

  Interface is DTE, Cabletype is V11, Clock mode is DCECLK

  Last 300 seconds input rate 8 bytes/sec 64bits/sec 0 packets/sec

  Last 300 seconds output rate 3 bytes/sec 24bits/sec 0 packets/sec

  Input: 132 packets, 4614 bytes

  Broadcast: 0, Multicast: 0

  Errors: 0, Runts: 0

  Giants: 0, CRC: 0

  Alignments: 0, Overruns: 0

  Dribbles: 0, Aborts: 0

  NoBuffers: 0, Frame Error: 0

  如以上显示R1的S1/0/0接口连接到了串行线缆的DTE端,把dte改成dce

  [R1]interface s1/0/0

  [R1-Serial1/0/0]link-

  [R1-Serial1/0/0]link-protocol fr

  Warning: The encapsulation protocol of thelink will be changed. Continue? [Y/N]:y

  [R1-Serial1/0/0]fr inter

  [R1-Serial1/0/0]fr interface-type dce

  [R1-Serial1/0/0]undo fr inarp

  [R1-Serial1/0/0]fr dlci 102

  [R1-fr-dlci-Serial1/0/0-102]q

  [R1-Serial1/0/0]fr map ip 10.0.12.2 102broadcast

  [R1-Serial1/0/0]q

  R1、R2端串行线缆的DTE端

  [R1]interface s1/0/0

  [R1-Serial1/0/0]link-protocol fr

  Warning: The encapsulation protocol of thelink will be changed. Continue? [Y/N]:y

  [R1-Serial1/0/0]fr inter

  [R1-Serial1/0/0]fr interface-type dte

  [R1-Serial1/0/0]undo fr inarp

  [R1-Serial1/0/0]fr map ip 10.0.12.2 102 bro

  [R1-Serial1/0/0]fr map ip 10.0.12.2 102broadcast

  [R1-Serial1/0/0]

  [R2]interface s1/0/0

  [R2-Serial1/0/0]link

  [R2-Serial1/0/0]link-protocol fr

  Warning: The encapsulation protocol of thelink will be changed. Continue? [Y/N]:y

  [R2-Serial1/0/0]fr interface-type dte

  [R2-Serial1/0/0]undo fr inarp

  [R2-Serial1/0/0]fr map ip 10.0.12.1 102broadcast

  配置完成后,在此测试R1与R2的连通性。

  [R2]ping 10.0.12.1

  PING 10.0.12.1: 56 data bytes,press CTRL_C to break

  Reply from 10.0.12.1: bytes=56 Sequence=1 ttl=255 time=30 ms

  Reply from 10.0.12.1: bytes=56 Sequence=2 ttl=255 time=10 ms

  Reply from 10.0.12.1: bytes=56 Sequence=3 ttl=255 time=10 ms

  Reply from 10.0.12.1: bytes=56 Sequence=4 ttl=255 time=10 ms

  Reply from 10.0.12.1: bytes=56 Sequence=5 ttl=255 time=10 ms

  ---10.0.12.1 ping statistics ---

  5packet(s) transmitted

  5packet(s) received

  0.00% packet loss

  round-trip min/avg/max = 10/14/30 ms

  注意,如果在配置帧中继之前,在步骤一的最后。测试R1与R2通讯正常。如果不正常,则错误出现在帧中继的配置上面。可以使用如下方式进行故障排除。

  以R1为例,注意以下标记的信息,并与R2对应信息对比。

  dis fr ma

  dis fr map-info

  Map Statistics for interface Serial1/0/0(DCE)

  DLCI = 102, IP10.0.12.2, Serial1/0/0

  create time = 2014/07/04 04:59:39, status = ACTIVE

  encapsulation =ietf, vlink = 2, broadcast

  dis interface s1/0/0

  Serial1/0/0 current state: UP

  Line protocol currentstate : UP

  Last line protocol up time : 2014-07-0405:01:23 UTC-05:13

  Description:this port connect to R2-S1/0/0

  Route Port,The Maximum Transmit Unit is1500, Hold timer is 10(sec)

  Internet Address is 10.0.12.1/24

  Link layer protocol is FRIETF

  LMI DLCI is 0, LMI type is Q.933a, framerelay DCE

  LMIstatus enquiry received 100, LMI status sent 100

  LMIstatus enquiry timeout 9, LMI message discarded 2

  Last physical up time : 2014-07-04 04:58:39 UTC-05:13

  Last physical down time : 2014-07-0404:58:38 UTC-05:13

  Current system time: 2014-07-0405:17:54-05:13

  Physical layer is synchronous,Virtualbaudrate is 64000 bps

  Interface is DTE, Cable type is V11, Clockmode is TC

  Last 300 seconds input rate 3 bytes/sec 24bits/sec 0 packets/sec

  Last 300 seconds output rate 1 bytes/sec 8bits/sec 0 packets/sec

  Input: 481 packets, 16371 bytes

  Broadcast: 0, Multicast: 0

  Errors: 0, Runts: 0

  Giants: 0, CRC: 0

  Alignments: 0, Overruns: 0

  Dribbles: 0, Aborts: 0

  NoBuffers: 0, Frame Error: 0

  Output: 472 packets, 6642 bytes

  Total Error: 0, Overruns: 0

  Collisions: 0, Deferred: 0

  Input bandwidth utilization : 0%

  Output bandwidth utilization : 0%

  dis fr lmi-info interface s1/0/0

  Frame relay LMI statistics for interfaceSerial1/0/0 (DCE, Q933)

  T392DCE = 15, N392DCE = 3, N393DCE = 4

  instatus enquiry = 111, out status = 111

  status enquiry timeout = 9, discarded messages = 2

  步骤三.配置R2与R3之间使用帧中继的背靠背形式,使用动态地址映射

  配置帧中继时,串口线缆的DCE端与DTE端配置不同。

  查看是R2还是R3连接到串口线缆的dce段。

  dis interface s2/0/0

  Serial2/0/0 current state : UP

  Line protocol current state : UP

  Last line protocol up time : 2014-07-0404:34:05 UTC-05:13

  Description:this port connect to R2-S2/0/0

  Route Port,The Maximum Transmit Unit is1500, Hold timer is 10(sec)

  Internet Address is 10.0.23.3/24

  Link layer protocol is PPP

  LCP opened, IPCP opened

  Last physical up time : 2014-07-04 04:33:28 UTC-05:13

  Last physical down time : 2014-07-0404:33:25 UTC-05:13

  Current system time: 2014-07-0405:22:38-05:13

  Physical layer is synchronous,Virtualbaudrate is 64000 bps

  Interface is DTE, Cabletype is V11, Clock mode is TC

  Last 300 seconds input rate 6 bytes/sec 48bits/sec 0 packets/sec

  Last 300 seconds output rate 2 bytes/sec 16bits/sec 0 packets/sec

  Input: 599 packets, 19568 bytes

  Broadcast: 0, Multicast: 0

  Errors: 0, Runts: 0

  Giants: 0, CRC: 0

  Alignments: 0, Overruns: 0

  Dribbles: 0, Aborts: 0

  NoBuffers: 0, Frame Error: 0

  经过查看两端都为DTE端。先配置R2S2/0/0。

  [R2]interface s2/0/0

  [R2-Serial2/0/0]link-

  [R2-Serial2/0/0]link-protocol fr

  Warning: The encapsulation protocol of thelink will be changed. Continue? [Y/N]:y

  [R2-Serial2/0/0]fr interface-type dte

  [R2-Serial2/0/0]fr inarp

  R3端为DCE。

  [R3]interface s2/0/0

  [R3-Serial2/0/0]lin

  [R3-Serial2/0/0]link-protocol fr

  Warning: The encapsulation protocol of thelink will be changed. Continue? [Y/N]:y

  [R3-Serial2/0/0]fr interface-type dce

  [R3-Serial2/0/0]fr dlci 203

  [R3-fr-dlci-Serial2/0/0-203]q

  [R3-Serial2/0/0]fr inarp

  [R3-Serial2/0/0]q

  配置完成后,测试R2与R3之间的连通性

  [R3]ping -c 1 10.0.23.2

  PING 10.0.23.2: 56 data bytes,press CTRL_C to break

  Reply from 10.0.23.2: bytes=56 Sequence=1 ttl=255 time=10 ms

  ---10.0.23.2 ping statistics ---

  1packet(s) transmitted

  1packet(s) received

  0.00% packet loss

  round-tripmin/avg/max = 10/10/10 ms

  步骤四.配置R1与R2之间运行RIPv2,手动定义邻居关系

  [R1]rip

  [R1-rip-1]version 2

  [R1-rip-1]network 10.0.0.0

  [R1-rip-1]undo summary

  [R2]rip

  [R2-rip-1]version 2

  [R2-rip-1]network 10.0.0.0

  [R2-rip-1]undo summary

  在R1上查看路由信息

  [R1]dis ip routing-table

  Route Flags: R - relay, D - download to fib

  ------------------------------------------------------------------------------

  Routing Tables: Public

  Destinations : 13 Routes :13

  Destination/Mask Proto Pre Cost Flags NextHop Interface

  10.0.1.0/24 Direct 0 0 D 10.0.1.1 LoopBack0

  10.0.1.1/32 Direct 0 0 D 127.0.0.1 LoopBack0

  10.0.1.255/32 Direct 0 0 D 127.0.0.1 LoopBack0

  10.0.2.0/24 RIP 100 1 D 10.0.12.2 Serial1/0/0

  10.0.12.0/24 Direct 0 0 D 10.0.12.1 Serial1/0/0

  10.0.12.1/32 Direct 0 0 D 127.0.0.1 Serial1/0/0

  10.0.12.2/32 Direct 0 0 D 10.0.12.2 Serial1/0/0

  10.0.12.255/32 Direct 0 0 D 127.0.0.1 Serial1/0/0

  10.0.23.0/24 RIP 100 1 D 10.0.12.2 Serial1/0/0

  127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0

  127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0

  127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0

  255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0

  如上所示R1已经学习到了路由信息。在R1上测试网络的联通情况。

  [R1]ping -c 1 10.0.23.2

  PING 10.0.23.2: 56 data bytes,press CTRL_C to break

  Reply from 10.0.23.2: bytes=56 Sequence=1 ttl=255 time=20 ms

  ---10.0.23.2 ping statistics ---

  1packet(s) transmitted

  1packet(s) received

  0.00% packet loss

  round-tripmin/avg/max = 20/20/20 ms

  显示通讯正常。

  注意此时R3未运行任何协议,R1将无法与R3通讯。

  此时R1与R2运行RIPv2协议,但是由于网络支持广播,所以可以自动相互发送路由信息。

  网络对广播支持的查看,一R2为例。

  dis frmap-info interface s1/0/0

  Map Statisticsfor interface Serial1/0/0 (DTE)

  DLCI = 102, IP 10.0.12.1, Serial1/0/0

  create time = 2014/07/04 05:02:02, status =ACTIVE

  encapsulation = ietf, vlink = 3, broadcast

  修改R1与R2配置,关闭对广播的支持。

  [R1]interface s1/0/0

  [R1-Serial1/0/0]undo fr map ip 10.0.12.2102

  [R1-Serial1/0/0]fr map ip 10.0.12.2 102

  [R2]interface s1/0/0

  [R2-Serial1/0/0]undo fr map ip 10.0.12.1102

  [R2-Serial1/0/0]fr map ip 10.0.12.1 102

  为使R1与R2刷新路由学习情况,需要将其中一个设备的接口关闭然后在打开。这里以R2为例。

  [R2-Serial1/0/0]shutdown

  [R2-Serial1/0/0]undo shutdown

  完成后。在查看路由信息,以R2为例。

  [R2]dis ip routing-table

  Route Flags: R - relay, D - download to fib

  ------------------------------------------------------------------------------

  Routing Tables: Public

  Destinations : 15 Routes :15

  Destination/Mask Proto Pre Cost Flags NextHop Interface

  10.0.2.0/24 Direct 0 0 D 10.0.2.2 LoopBack0

  10.0.2.2/32 Direct 0 0 D 127.0.0.1 LoopBack0

  10.0.2.255/32 Direct 0 0 D 127.0.0.1 LoopBack0

  10.0.12.0/24 Direct 0 0 D 10.0.12.2 Serial1/0/0

  10.0.12.1/32 Direct 0 0 D 10.0.12.1 Serial1/0/0

  10.0.12.2/32 Direct 0 0 D 127.0.0.1 Serial1/0/0

  10.0.12.255/32 Direct 0 0 D 127.0.0.1 Serial1/0/0

  10.0.23.0/24 Direct 0 0 D 10.0.23.2 Serial2/0/0

  10.0.23.2/32 Direct 0 0 D 127.0.0.1 Serial2/0/0

  10.0.23.3/32 Direct 0 0 D 10.0.23.3 Serial2/0/0

  10.0.23.255/32 Direct 0 0 D 127.0.0.1 Serial2/0/0

  127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0

  127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0

  127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0

  255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0

  注意,此时,由于网络不支持广播。R1与R2无法相互交流路由信息。使用ping测试。

  [R2]ping 10.0.1.1

  PING 10.0.1.1: 56 data bytes,press CTRL_C to break

  Request time out

  Request time out

  Request time out

  Request time out

  Request time out

  ---10.0.1.1 ping statistics ---

  5packet(s) transmitted

  0packet(s) received

  100.00% packetloss

  此时网络不支持广播,以R2为例。

  [R2]dis frmap-info interface s1/0/0

  Map Statisticsfor interface Serial1/0/0 (DTE)

  DLCI = 102, IP 10.0.12.1, Serial1/0/0

  create time = 2014/07/04 05:44:28, status =ACTIVE

  encapsulation = ietf, vlink = 6

  注意这里无broadcast字段

  手动定义R1与R2相互为RIP邻居,使用单播交换路由信息。

  [R1]rip

  [R1-rip-1]peer10.0.12.2

  [R1-rip-1]q

  [R2]rip

  [R2-rip-1]peer10.0.12.1

  [R2-rip-1]q

  配置完成后,在R2上查看路由信息。

  [R2]dis iprouting-table

  Route Flags: R -relay, D - download to fib

  ------------------------------------------------------------------------------

  Routing Tables:Public

  Destinations : 16 Routes : 16

  Destination/Mask Proto Pre Cost Flags NextHop Interface

  10.0.1.0/24 RIP 100 1 D 10.0.12.1 Serial1/0/0

  10.0.2.0/24 Direct 0 0 D 10.0.2.2 LoopBack0

  10.0.2.2/32 Direct 0 0 D 127.0.0.1 LoopBack0

  10.0.2.255/32 Direct 0 0 D 127.0.0.1 LoopBack0

  10.0.12.0/24 Direct 0 0 D 10.0.12.2 Serial1/0/0

  10.0.12.1/32 Direct 0 0 D 10.0.12.1 Serial1/0/0

  10.0.12.2/32 Direct 0 0 D 127.0.0.1 Serial1/0/0

  10.0.12.255/32 Direct 0 0 D 127.0.0.1 Serial1/0/0

  10.0.23.0/24 Direct 0 0 D 10.0.23.2 Serial2/0/0

  10.0.23.2/32 Direct 0 0 D 127.0.0.1 Serial2/0/0

  10.0.23.3/32 Direct 0 0 D 10.0.23.3 Serial2/0/0

  10.0.23.255/32 Direct 0 0 D 127.0.0.1 Serial2/0/0

  127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0

  127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0

  127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0

  255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0

  使用ping命令进行连通性测试。

  [R2]ping -c 110.0.1.1

  PING 10.0.1.1: 56 data bytes, press CTRL_C to break

  Reply from 10.0.1.1: bytes=56 Sequence=1ttl=255 time=10 ms

  --- 10.0.1.1 ping statistics ---

  1 packet(s) transmitted

  1 packet(s) received

  0.00% packet loss

  round-trip min/avg/max = 10/10/10 ms

  注意:有RIPv2协议默认进行网络汇总,所以在R1设备上看路由信息时,只有一条RIP路由。

  步骤五.配置R2与R3之间运行ospf,手动定义邻居关系。

  [R2]router id10.0.2.2

  Info: Router IDhas been modified, please reset the relative protocols manually t

  o update theRouter ID.

  [R2]ospf 1

  [R2-ospf-1]area0

  [R2-ospf-1-area-0.0.0.0]network10.0.0.0 0.255.255.255

  [R3]router id10.0.3.3

  Info: Router IDhas been modified, please reset the relative protocols manually t

  o update theRouter ID.

  [R3]ospf 1

  [R3-ospf-1]area0

  [R3-ospf-1-area-0.0.0.0]network10.0.0.0 0.255.255.255

  [R3-ospf-1-area-0.0.0.0]q

  配置完成后,以R3为例查看路由信息。

  [R3]dis iprouting-table

  Route Flags: R -relay, D - download to fib

  ------------------------------------------------------------------------------

  Routing Tables:Public

  Destinations : 11 Routes : 11

  Destination/Mask Proto Pre Cost Flags NextHop Interface

  10.0.3.0/24 Direct 0 0 D 10.0.3.3 LoopBack0

  10.0.3.3/32 Direct 0 0 D 127.0.0.1 LoopBack0

  10.0.3.255/32 Direct 0 0 D 127.0.0.1 LoopBack0

  10.0.23.0/24 Direct 0 0 D 10.0.23.3 Serial2/0/0

  10.0.23.2/32 Direct 0 0 D 10.0.23.2 Serial2/0/0

  10.0.23.3/32 Direct 0 0 D 127.0.0.1 Serial2/0/0

  10.0.23.255/32 Direct 0 0 D 127.0.0.1 Serial2/0/0

  127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0

  127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0

  127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0

  255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0

  注意这里没有学习到R2发送过来的路由信息。

  默认情况下,ospf认为的封装为帧中继的接口网络模式为“NBMA”,默认不主动发现邻居。

  [R3]dis ospfinterface s2/0/0

  OSPF Process 1 with Router ID 10.0.3.3

  Interfaces

  Interface: 10.0.23.3 (Serial2/0/0)

  Cost: 48 State: DR Type: NBMA MTU: 1500

  Priority: 1

  Designated Router: 10.0.23.3

  Backup Designated Router: 0.0.0.0

  Timers: Hello 30 , Dead 120 , Poll 120 , Retransmit 5 , Transmit Delay 1

  以R3为例,查看OSPF尽力的邻居关系

  [R3]dis ospfpeer

  OSPF Process 1 with Router ID 10.0.3.3

  在这种情况下,为能自动发现邻居关系,必须手动定义邻居关系。

  [R2]ospf 1

  [R2-ospf-1]peer10.0.23.3

  [R3]ospf 1

  [R3-ospf-1]peer10.0.23.2

  配置完成后查看R3的OSPF邻居关系

  [R3]dis ospfpeer

  OSPF Process 1 with Router ID 10.0.3.3

  Neighbors

  Area 0.0.0.0 interface10.0.23.3(Serial2/0/0)'s neighbors

  Router ID: 10.0.2.2 Address: 10.0.23.2

  State: Full Mode:Nbr is Slave Priority: 1

  DR: 10.0.23.3 BDR: 10.0.23.2 MTU: 0

  Dead timer due in 93 sec

  Retrans timer interval: 5

  Neighbor is up for 00:01:55

  Authentication Sequence: [ 0 ]

  此时邻居关系已经建立。

  以R3为例,查看路由表信息。

  [R3]dis iprouting-table

  Route Flags: R -relay, D - download to fib

  ------------------------------------------------------------------------------

  Routing Tables:Public

  Destinations : 13 Routes : 13

  Destination/Mask Proto Pre Cost Flags NextHop Interface

  10.0.2.2/32 OSPF 10 48 D 10.0.23.2 Serial2/0/0

  10.0.3.0/24 Direct 0 0 D 10.0.3.3 LoopBack0

  10.0.3.3/32 Direct 0 0 D 127.0.0.1 LoopBack0

  10.0.3.255/32 Direct 0 0 D 127.0.0.1 LoopBack0

  10.0.12.0/24 OSPF 10 96 D 10.0.23.2 Serial2/0/0

  10.0.23.0/24 Direct 0 0 D 10.0.23.3 Serial2/0/0

  10.0.23.2/32 Direct 0 0 D 10.0.23.2 Serial2/0/0

  10.0.23.3/32 Direct 0 0 D 127.0.0.1 Serial2/0/0

  10.0.23.255/32 Direct 0 0 D 127.0.0.1 Serial2/0/0

  127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0

  127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0

  127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0

  255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0

  测试R3与R2的连通性

  [R3]ping -c 110.0.2.2

  PING 10.0.2.2: 56 data bytes, press CTRL_C to break

  Reply from 10.0.2.2: bytes=56 Sequence=1ttl=255 time=10 ms

  --- 10.0.2.2 ping statistics ---

  1 packet(s) transmitted

  1 packet(s) received

  0.00% packet loss

  round-trip min/avg/max = 10/10/10 ms

  步骤六.配置R2与R3之间运行OSPF,不定义邻居关系,修改网络类型为广播。

  在帧中继网络上运行OSPF。可以手动定义邻居,也可以在支持广播的网络上定义OSPF自动发现邻居的功能。

  删除任务5中R2与R3关于手动邻居关系的定义。

  [R2]ospf 1

  [R2-ospf-1]undopeer 10.0.23.3

  [R3]ospf 1

  [R3-ospf-1]undopeer 10.0.23.2

  确认帧中继接口支持广播功能。

  [R3]dis frmap-info interface s2/0/0

  Map Statisticsfor interface Serial2/0/0 (DCE)

  DLCI = 203, IP INARP 10.0.23.2, Serial2/0/0

  create time = 2014/07/04 05:29:24, status =ACTIVE

  encapsulation = ietf, vlink = 2, broadcast

  确认广播功能后,确认接口的OSPF网络类型

  [R3]dis fr map-info interface s2/0/0

  Map Statistics for interfaceSerial2/0/0 (DCE)

  DLCI = 203, IP INARP 10.0.23.2, Serial2/0/0

  create time = 2014/07/04 05:29:24, status = ACTIVE

  encapsulation = ietf, vlink = 2, broadcast

  [R3]dis ospf interfa

  [R3]dis ospf interface s2/0/0

  OSPF Process 1 with Router ID 10.0.3.3

  Interfaces

  Interface: 10.0.23.3 (Serial2/0/0)

  Cost: 48 State: DR Type: NBMA MTU: 1500

  Priority: 1

  Designated Router: 10.0.23.3

  Backup Designated Router: 0.0.0.0

  Timers: Hello 30 , Dead 120 , Poll 120 , Retransmit 5 , Transmit Delay 1

  修改该网络类型为广播

  [R2]interface s2/0/0

  [R2-Serial2/0/0]ospf network-typebroadcast

  [R3]interface s2/0/0

  [R3-Serial2/0/0]ospf network-typebroadcast

  完成后关闭R3的S2/0/0接口,人后在打开,以便刷新邻居关系。

  [R3-Serial2/0/0]shutdown

  [R3-Serial2/0/0]undo shutdown

  配置完成后,稍等片刻,待OSPF邻居关系建立后,查看OSPF邻居关系。

  [R3]dis ospf peer

  OSPF Process 1 with Router ID 10.0.3.3

  Neighbors

  Area 0.0.0.0 interface10.0.23.3(Serial2/0/0)'s neighbors

  Router ID: 10.0.2.2 Address: 10.0.23.2

  State: Full Mode:Nbr is Slave Priority: 1

  DR: 10.0.23.3 BDR: 10.0.23.2 MTU: 0

  Dead timer due in 35 sec

  Retrans timer interval: 5

  Neighbor is up for 00:00:20

  Authentication Sequence: [ 0 ]

  以R3为例,参看路由信息,并测试R3与R2的连通性。

  [R3]disp ip routing-table

  Route Flags: R - relay, D - downloadto fib

  ------------------------------------------------------------------------------

  Routing Tables: Public

  Destinations : 13 Routes : 13

  Destination/Mask Proto Pre Cost Flags NextHop Interface

  10.0.2.2/32 OSPF 10 48 D 10.0.23.2 Serial2/0/0

  10.0.3.0/24 Direct 0 0 D 10.0.3.3 LoopBack0

  10.0.3.3/32 Direct 0 0 D 127.0.0.1 LoopBack0

  10.0.3.255/32 Direct 0 0 D 127.0.0.1 LoopBack0

  10.0.12.0/24 OSPF 10 96 D 10.0.23.2 Serial2/0/0

  10.0.23.0/24 Direct 0 0 D 10.0.23.3 Serial2/0/0

  10.0.23.2/32 Direct 0 0 D 10.0.23.2 Serial2/0/0

  10.0.23.3/32 Direct 0 0 D 127.0.0.1 Serial2/0/0

  10.0.23.255/32 Direct 0 0 D 127.0.0.1 Serial2/0/0

  127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0

  127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0

  127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0

  255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0

  [R3]disp ospf interface s2/0/0

  OSPF Process 1 with Router ID 10.0.3.3

  Interfaces

  Interface: 10.0.23.3 (Serial2/0/0)

  Cost: 48 State: DR Type: Broadcast MTU: 1500

  Priority: 1

  Designated Router: 10.0.23.3

  Backup Designated Router: 10.0.23.2

  Timers: Hello 10 , Dead 40 , Poll 120 , Retransmit 5 , Transmit Delay 1

  [R3]ping -c 1 10.0.2.2

  PING 10.0.2.2: 56 data bytes,press CTRL_C to break

  Reply from 10.0.2.2: bytes=56 Sequence=1 ttl=255 time=10 ms

  --- 10.0.2.2 ping statistics ---

  1 packet(s) transmitted

  1 packet(s) received

  0.00% packet loss

  round-trip min/avg/max = 10/10/10 ms

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