[c-nsp] MAC 00000000

[Konstantin Barinov]

Hi,

Any idea, how to detect and disable lusers like this?

This is Cat 4000, showing messages below.

There are Cats 2950 and other switches downstream, who keep silence
about users with mac 00000. Also no switches have mac 000000 in their
mac-address tables (yes, they should not have it).


2005 Mar 14 18:45:06 EET +02:00 %SYS-4-P2_WARN: 1/Host 00:00:00:00:00:00 is flapping between port 3/2 and port 2/32
2005 Mar 14 18:45:23 EET +02:00 %SYS-4-P2_WARN: 1/Host 00:00:00:00:00:00 is flapping between port 2/32 and port 3/2
2005 Mar 14 18:45:38 EET +02:00 %SYS-4-P2_WARN: 1/Host 00:00:00:00:00:00 is flapping between port 3/2 and port 2/32
2005 Mar 14 18:45:51 EET +02:00 %SYS-4-P2_WARN: 1/Host 00:00:00:00:00:00 is flapping between port 2/32 and port 3/2
2005 Mar 14 18:46:07 EET +02:00 %SYS-4-P2_WARN: 1/Host 00:00:00:00:00:00 is flapping between port 2/32 and port 3/2
2005 Mar 14 18:46:23 EET +02:00 %SYS-4-P2_WARN: 1/Host 00:00:00:00:00:00 is flapping between port 2/32 and port 3/2
2005 Mar 14 18:46:39 EET +02:00 %SYS-4-P2_WARN: 1/Host 00:00:00:00:00:00 is flapping between port 2/32 and port 3/2
2005 Mar 14 18:46:53 EET +02:00 %SYS-4-P2_WARN: 1/Host 00:00:00:00:00:00 is flapping between port 2/32 and port 3/2
2005 Mar 14 18:47:08 EET +02:00 %SYS-4-P2_WARN: 1/Host 00:00:00:00:00:00 is flapping between port 3/2 and port 2/32
2005 Mar 14 18:47:22 EET +02:00 %SYS-4-P2_WARN: 1/Host 00:00:00:00:00:00 is flapping between port 2/32 and port 3/2




br
--
Konstantin Barinov
INFONET AS, Tallinn, Estonia