Layer2 troubleshooting

 GS,

I am experiencing something weird on a switching scenario. Basically 2
layer2 switches
connected through a patch panel.

I started getting the following message and errors started to increment

 *Sep 14 08:54:05.896 BR-EST: %SW_MATM-4-MACFLAP_NOTIF: Host 0022.196b.cd00
in vlan 2006 is flapping between port Fa0/8 and port Gi0/1

In order to troubleshoot it, I put one side on shutdown while I would check
the configs and look
for problems. But while one side is administratively shutdown, on the other
side I still see it
up/up. weird?! The physical connection has been checked.

My configs on both sides:

SW A

interface ethernet 1/52
 description UPLINK AAE01 - P.8
 shutdown
 switchport allowed vlan add 1 untagged
 switchport ingress-filtering
 switchport native vlan 1
 switchport allowed vlan add 2006 tagged

SW B

Current configuration : 126 bytes
!
interface FastEthernet0/8
 description PRORESERVE - DKA 7o.
 switchport trunk allowed vlan 2006
 switchport mode trunk
end

Any thoughts?

Rgs,

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Received on Fri May 14 2010 - 19:39:53 ART