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isis 提示系统ID冲突

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*Mar 1 01:53:50.787: %CLNS-3-BADPACKET: ISIS: LAN L1 hello, Duplicate system ID detected from c000.0ae4.0001 (FastEthernet0/0)

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*Mar 1 01:54:50.803: %CLNS-3-BADPACKET: ISIS: LAN L1 hello, Duplicate system ID detected from c000.0ae4.0001 (FastEthernet0/0)

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*Mar 1 01:55:51.803: %CLNS-3-BADPACKET: ISIS: LAN L1 hello, Duplicate system ID detected from c000.0ae4.0000 (FastEthernet0/1)

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*Mar 1 01:56:53.143: %CLNS-3-BADPACKET: ISIS: LAN L1 hello, Duplicate system ID detected from c000.0ae4.0001 (FastEthernet0/0)

这种情况怎么排查?我各台设备配的NET是不同的:48.0000.0001.0001.00 48.0000.0002.0002.00

Re: isis 提示系统ID冲突

这是设备上的现实结果

pe2#sh clns is-neighbors

System Id Interface State Type Priority Circuit Id Format
pe1 Fa0/1 Up L1 64 pe2.02 Phase V
pe3 Se1/1 Up L2 0 00 Phase V
rr Fa0/0 Up L1 64 pe2.01 Phase V
pe2#sh isis host
Level System ID Dynamic Hostname (notag)
2 0000.0002.0002 pe3
1 0000.0254.0254 rr
* 0000.0001.0001 pe2
1 0000.0002.0003 pe1

而且提示冲突的各台设备上还都能学到路由。可ping通

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Re: isis 提示系统ID冲突

Sometimes, The duplicate system id messages may not be related to a misconfiguration or isis problem, check the switch to see if isis packets are being sent back.

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