From: Antonio Soares (amsoares@netcabo.pt)
Date: Tue Mar 17 2009 - 08:20:52 ART
I don't think this is normal. These type of messages are usually associated with a STP loop. Disable the redundant links in your
Port-Channel and see what happens. But first check the cpu occupation on both switches: show proc cpu | ex 0.00.
Regards,
Antonio Soares, CCIE #18473 (R&S)
amsoares@netcabo.pt
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of joe_astorino@comcast.net
Sent: segunda-feira, 16 de Margo de 2009 18:59
To: CCIE, R/S OSL; CCIE R/S, Groupstudy
Subject: Fallback Bridging Console Message: Is This Normal?
I have 2 switches trunked together in this lab scenario. The scenario instructs me to do fallback bridging for VLANs 999 and 1000.
On SW 1 I configured an SVI for each vlan, and configured the fallback bridging. On the first switch, I now continually get the
below output: Note, the switches are linked via po12 port-channel. My first thought is that this is absolutely normal because the
VLANs are bridged, but I wanted to make sure. It definitely is an annoyance when trying to finish the rest of the lab (I always turn
on "logging con deb" so I can see everything necessary in the lab)
6d16h: %SW_MATM-4-MACFLAP_NOTIF: Host 000b.46e2.6997 in bridge group 1 is flapping between port Po12 (Vl1000) and port Po12 (Vl999)
Cat1#
6d16h: %SW_MATM-4-MACFLAP_NOTIF: Host 000b.46e2.6997 in bridge group 1 is flapping between port Po12 (Vl999) and port Po12 (Vl1000)
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