1、H3CTE路由故障排除实验教师用书路由故障排除实验教师用书1.1 组网需求描述 11.2 教师实验前准备 21.2.1 配置全网互通 21.2.2 设置故障点 91.3 故障现象描述 111.4 故障相关信息收集 111.5 原因分析及故障排除参考流程 111.6 教师实验指导建议 231.6.1 分组建议 231.6.2 组长推举以及组员分工 231.6.3 分组讨论 241.6.4 各组总结 241.6.5 提问 241.6.6 教师总结 241.6.7 实验中的时间点控制 251.7 经验总结 25路由故障排除实验1.1 组网需求描述图1-1 路由故障排除综合实验组网本实验中用到了五台路
2、由器,划分为两个自治系统。其中路由器A、B、C位于AS100,自治系统内C的S0/1接口与B的S0/0接口相连,B的S0/1接口与A的S0/0接口相连,A和C之间没有直接的物理连接;路由器D、E位于AS200,D的S0/0接口与E的S0/0口相连。在自治系统之间C的S0/0口与D的S0/1口直接相连。在以上各链路中,除了AS100内A和B之间的链路层封装为帧中继之外,其余均为PPP。在自治系统AS100中运行的IGP为OSPF,划分为三个区域0,1,2,区域0和区域2没有直接相连,需要用到虚连接;注意其中路由器A、B上的以太网段194.186.23.0/25和194.186.23.128/25
3、上不允许运行OSPF协议;在AS100中路由器A、B、C上也运行BGP协议。在AS200中IGP为RIP,只有路由器D上运行BGP协议。最后一点要求是在本网络中不允许把IGP引入到BGP当中以上是本实验的网络概况与要求,具体的IP地址如上图所示。本实验的最终目的是让学员成功排除教师在网络中设置的全部故障点,调试达到全网互通。对于全网互通,我们可以用以下的方法进行检测:从路由器A和B上的用户网段194.186.23.0/25、10.1.2.1/24、10.1.1.1/24、194.186.23.128/25分别Ping路由器E上的用户网段20.1.1.1/24、30.1.1.1/18、40.1.
4、1.1/22,看是否能够Ping通。1.2 教师实验前准备1.2.1 配置全网互通作为教师,在实验前的第一项重要准备工作应该是准备好实验环境,根据组网需求描述中的要求配置全网互通,并进行验证。下面列出全网互通时五台路由器上的全部配置信息以供参考:Adis current-configuration # sysname A # router id 1.1.1.1 # radius scheme system # domain system # local-user admin password cipher .USE=B,53Q=QMAF41! service-type telnet termi
5、nal level 3 service-type ftp # interface Aux0 async mode flow # interface Ethernet0/0 ip address 194.186.23.1 255.255.255.128 # interface Ethernet0/1 ip address dhcp-alloc # interface Serial0/0 link-protocol fr fr interface-type dce ospf network-type nbma ip address 200.1.1.2 255.255.255.0 fr map ip
6、 200.1.1.1 16 broadcast # interface Serial0/1 clock DTECLK1 link-protocol ppp ip address ppp-negotiate # interface NULL0 # # interface LoopBack0 ip address 1.1.1.1 255.255.255.0 # interface LoopBack1 ip address 10.1.1.1 255.255.255.0 # interface LoopBack2 ip address 10.1.2.1 255.255.255.0 # bgp 100
7、undo synchronization group as100 internal peer 150.1.1.1 group as100 peer 200.1.1.1 group as100 # ospf 1 peer 200.1.1.2 import-route direct area 0.0.0.1 network 200.1.1.0 0.0.0.255 network 1.1.1.1 0.0.0.0 vlink-peer 2.2.2.2 # area 0.0.0.2 network 10.0.0.0 0.255.255.255 # user-interface con 0 user-in
8、terface aux 0 user-interface vty 0 4 authentication-mode scheme # return Bdis current-configuration # sysname B # router id 2.2.2.2 # radius scheme system # domain system # local-user admin password cipher .USE=B,53Q=QMAF41! service-type telnet terminal level 3 service-type ftp # interface Aux0 asyn
9、c mode flow # interface Ethernet0/0 ip address 194.186.23.129 255.255.255.128 # interface Ethernet0/1 ip address dhcp-alloc # interface Serial0/0 clock DTECLK1 link-protocol ppp ip address 150.1.1.2 255.255.255.0 # interface Serial0/1 clock DTECLK1 link-protocol fr ip address 200.1.1.1 255.255.255.0
10、 fr map ip 200.1.1.2 16 broadcast ospf network-type nbma # interface NULL0 # interface LoopBack0 ip address 2.2.2.2 255.255.255.255 # bgp 100 undo synchronization group as100 internal peer 150.1.1.1 group as100 peer 200.1.1.2 group as100 # ospf 1 peer 202.1.1.1 import-route direct area 0.0.0.1 netwo
11、rk 200.1.1.0 0.0.0.255 network 2.2.2.2 0.0.0.0 vlink-peer 1.1.1.1 # area 0.0.0.0 network 150.1.1.0 0.255.255.255 # user-interface con 0 user-interface aux 0 user-interface vty 0 4 authentication-mode scheme # return Cdis current-configuration # sysname C # router id 3.3.3.3 # radius scheme system #
12、domain system # local-user admin password cipher .USE=B,53Q=QMAF41! service-type telnet terminal level 3 service-type ftp # interface Aux0 async mode flow # interface Ethernet0/0 ip address dhcp-alloc # interface Ethernet0/1 ip address dhcp-alloc # interface Serial0/0 clock DTECLK1 link-protocol ppp
13、 ip address 202.1.1.1 255.255.255.0 # interface Serial0/1 clock DTECLK1 link-protocol ppp ip address 150.1.1.1 255.255.255.0 # interface NULL0 # interface LoopBack0 ip address 3.3.3.3 255.255.255.255 # bgp 100 import-route ospf 1 import-route direct undo synchronization group as100 internal peer as1
14、00 next-hop-local peer 150.1.1.2 group as100 peer 200.1.1.2 group as100 group as200 external peer 202.1.1.2 group as200 as-number 200 # ospf 1 area 0.0.0.0 network 150.1.1.0 0.255.255.255 network 3.3.3.3 0.0.0.0 # user-interface con 0 user-interface aux 0 user-interface vty 0 4 authentication-mode s
15、cheme # return Ddis current-configuration # sysname D # radius scheme system # domain system # local-user admin password cipher .USE=B,53Q=QMAF41! service-type telnet terminal level 3 service-type ftp # interface Aux0 async mode flow # interface Ethernet0/0 ip address dhcp-alloc # interface Ethernet
16、0/1 ip address dhcp-alloc # interface Serial0/0 clock DTECLK1 link-protocol ppp ip address 192.168.1.1 255.255.255.0 rip version 2 multicast # interface Serial0/1 clock DTECLK1 link-protocol ppp ip address 202.1.1.1 255.255.255.0 # interface NULL0 # bgp 200 import-route direct import-route rip undo
17、synchronization group as100 external peer 202.1.1.1 group as100 as-number 100 # rip network 192.168.1.0 # user-interface con 0 user-interface aux 0 user-interface vty 0 4 authentication-mode scheme # return Edis current-configuration # sysname E # radius scheme system # domain system # local-user admin password cipher .USE=B,53Q=QMAF4 2.2.2.2, State: downInterface: 100.1.1.1 (Ethernet0/1) Cost: 1 State: PtoP Type: Virtual Transit Area: 0.0.0.1 Timers: Hello 10, Dead 40, Poll 0, Retransmit 5,
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