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HP : 0 / 237
MP : 43 / 3464
EXP : 49%
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江湖豪客
成员等级: 10
发表总数: 131
金币总数: 314
所属组别: 普通成员
注册日期: 2004/01/11
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网络拓扑图如下
配置如下：
RT5
interface Loopback0
ip address 11.1.1.5 255.255.255.255
!
interface Ethernet0/0
ip address 10.1.1.5 255.255.255.0
ip router isis
!
router isis
passive-interface Loopback0
net 49.0001.0000.0000.0005.00
is-type level-1
metric-style wide
RT1
interface Loopback0
ip address 11.1.1.1 255.255.255.255
!
interface Ethernet0/0
ip address 10.1.1.1 255.255.255.0
ip router isis
!
interface Serial0/0
ip address 192.168.1.1 255.255.255.252
ip router isis
!
router isis
passive-interface Loopback0
net 49.0001.0000.0000.0001.00
metric-style wide
log-adjacency-changes
RT2
interface Loopback0
ip address 11.1.1.2 255.255.255.255
!
interface Ethernet0/0
ip address 10.1.2.1 255.255.255.0
ip router isis
!
interface Serial0/0
ip address 192.168.1.2 255.255.255.252
ip router isis
!
router isis
passive-interface Loopback0
net 49.0002.0000.0000.0002.00
metric-style wide
log-adjacency-changes
RT6
interface Loopback0
ip address 11.1.1.6 255.255.255.255
!
interface Ethernet0/0
ip address 10.1.2.6 255.255.255.0
ip router isis
!
router isis
passive-interface Loopback0
net 49.0002.0000.0000.0006.00
is-type level-1
metric-style wide
下面把RT1的ethernet0/0 shutdown,然后观察spf过程
RT1#debug isis spf-events
RT1(config)#int e0/0
RT1(config-if)#shut
RT1(config-if)#^Z
Mar 6 20:17:26: ISIS-SPF: L1 LSP 1 (0000.0000.0001.00-00) flagged for recalculC
Mar 6 20:17:26: ISIS-SPF: L1 LSP 5 (0000.0000.0005.00-00) flagged for recalculC
Mar 6 20:17:28: ISIS-SPF: Compute L1 SPT
Mar 6 20:17:28: ISIS-SPF: 3 nodes for level-1
Mar 6 20:17:28: ISIS-SPF: Move 0000.0000.0001.00-00 to PATHS, metric 0
Mar 6 20:17:28: ISIS-SPF: Add 0000.0000.0001.01-00 to TENT, metric 10
Mar 6 20:17:28: ISIS-SPF: Add 0000.0000.0001 to L1 route table, metric 0
Mar 6 20:17:28: ISIS-SPF: Move 0000.0000.0001.01-00 to PATHS, metric 10
Mar 6 20:17:28: ISIS-SPF: Aging L1 LSP 1 (0000.0000.0001.00-00), version 214
Mar 6 20:17:28: ISIS-SPF: Aging L2 LSP 2 (0000.0000.0001.00-00), version 208
Mar 6 20:17:28: ISIS-SPF: Aging L1 LSP 3 (0000.0000.0001.01-00), version 207
Mar 6 20:17:28: ISIS-SPF: Aging L2 LSP 4 (0000.0000.0002.00-00), version 209
Mar 6 20:17:28: ISIS-SPF: Aging L1 LSP 5 (0000.0000.0005.00-00), version 207
Mar 6 20:17:28: ISIS-SPF: Aging L2 LSP 6 (0000.0000.0006.01-00), version 112
Mar 6 20:17:28: ISIS-SPF: Aging L2 LSP 7 (0000.0000.0006.00-00), version 114
Mar 6 20:17:28: ISIS-SPF: Aging L2 LSP 8 (0000.0000.0001.01-00), version 1
Mar 6 20:17:33: ISIS-SPF: Compute L2 SPT
Mar 6 20:17:33: ISIS-SPF: 5 nodes for level-2
Mar 6 20:17:33: ISIS-SPF: Move 0000.0000.0001.00-00 to PATHS, metric 0
Mar 6 20:17:33: ISIS-SPF: Add 49.0001 to L2 route table, metric 0
Mar 6 20:17:33: ISIS-SPF: Add 0000.0000.0001.01-00 to TENT, metric 10
Mar 6 20:17:33: ISIS-SPF: considering adj to 0000.0000.0002 (Serial0/0) metric
Mar 6 20:17:33: ISIS-SPF: (accepted)
Mar 6 20:17:33: ISIS-SPF: Add 0000.0000.0002.00-00 to TENT, metric 10
Mar 6 20:17:33: ISIS-SPF: Next hop 0000.0000.0002 (Serial0/0)
Mar 6 20:17:33: ISIS-SPF: Move 0000.0000.0001.01-00 to PATHS, metric 10
Mar 6 20:17:33: ISIS-SPF: Move 0000.0000.0002.00-00 to PATHS, metric 10
Mar 6 20:17:33: ISIS-SPF: Add 49.0002 to L2 route table, metric 10
Mar 6 20:17:33: ISIS-SPF: Redundant IP route 10.1.2.0/255.255.255.0, metric 20d
Mar 6 20:17:33: ISIS-SPF: Redundant IP route 11.1.1.2/255.255.255.255, metric d
Mar 6 20:17:33: ISIS-SPF: Redundant IP route 11.1.1.6/255.255.255.255, metric d
Mar 6 20:17:33: ISIS-SPF: Add 192.168.1.0/255.255.255.252 to IP route table, m0
Mar 6 20:17:33: ISIS-SPF: Next hop 0000.0000.0002/192.168.1.2 (Serial0/0) (rej)
Mar 6 20:17:33: ISIS-SPF: Aging L1 LSP 1 (0000.0000.0001.00-00), version 214
Mar 6 20:17:33: ISIS-SPF: Aging L2 LSP 2 (0000.0000.0001.00-00), version 209
Mar 6 20:17:33: ISIS-SPF: Aging L1 LSP 3 (0000.0000.0001.01-00), version 207
Mar 6 20:17:33: ISIS-SPF: Aging L2 LSP 4 (0000.0000.0002.00-00), version 210
Mar 6 20:17:33: ISIS-SPF: Aging L1 LSP 5 (0000.0000.0005.00-00), version 207
Mar 6 20:17:33: ISIS-SPF: Aging L2 LSP 6 (0000.0000.0006.01-00), version 113
Mar 6 20:17:33: ISIS-SPF: Aging L2 LSP 7 (0000.0000.0006.00-00), version 115
Mar 6 20:17:33: ISIS-SPF: Aging L2 LSP 8 (0000.0000.0001.01-00), version 2
在输出里面居然看到了Mar 6 20:17:33: ISIS-SPF: Aging L2 LSP 8 (0000.0000.0001.01-00), version 2
感觉有点奇怪，RT1只是在Ethernet0/0上成为DIS，怎么会在level 2上也发送0000.0000.0001.01-00这样的LSP呢？ |
