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I need help to understand the error message: %CLNS-3-BADPACKET: ISIS:

Erick Vaiano de Freitas
Level 1
Level 1

‎01-07-2010 10:07 AM - edited ‎03-04-2019 07:09 AM

During some tests (7206VXR NPE-G2), placing an interface GigabitEthernet in loop, the router was unstable and showed these error messages:

Dec 23 15:41:10: %CLNS-3-BADPACKET: ISIS: LAN L2 hello, Duplicate system ID detected from 001d.a19a.ac19 (GigabitEthernet0/3)

Dec 23 15:42:10: %CLNS-3-BADPACKET: ISIS: LAN L2 hello, Duplicate system ID detected from 001d.a19a.ac19 (GigabitEthernet0/3)

I’m looking for a BUG.

Somebody knows why this is happening? Is not recommended close loop in Ethernet interfaces with IS-IS?

Thanks.

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