[c-nsp] mac flapping on 6509 between core and fwsm

[Randy]

--- On Thu, 4/19/12, Mario Ruiz <mruiznet at gmail.com> wrote:

> From: Mario Ruiz <mruiznet at gmail.com>
> Subject: Re: [c-nsp] mac flapping on 6509 between core and fwsm
> To: "ryanL" <ryan.landry at gmail.com>
> Cc: cisco-nsp at puck.nether.net
> Date: Thursday, April 19, 2012, 5:14 PM
> I,ve  seen events  when
> server switch ports are  not properly teamed.
>   And physically connected to separate access layer on
> a switches.
> Bridged  interfaces ...find where the mac address is
> located....
> 
> On Thu, Apr 19, 2012 at 6:10 PM, ryanL <ryan.landry at gmail.com>
> wrote:
> > does anyone know what would cause this? po30 uplinks to
> a core router,
> > and po579 is the internal etherchannel assignment for
> the fwsm. the
> > fwsm is bridging. the 6509 is spanning-tree root for
> the vlan. vl1250
> > is the outside interface. the mac in question is core
> router,
> > configured as po30.1250. the core has numerous other
> subints
> > configured the same way (so, same mac), but only this
> vlan reports the
> > move, repeatedly.
> >
> > %MAC_MOVE-SW1_SP-4-NOTIF: Host 0024.f716.5142 in vlan
> 1250 is flapping
> > between port Po579 and port Po30
> >
> > 6509 vss is running 12.2(33)SXI6
> > fwsm is 4.1(7)
> >
> > i have multiple fwsm contexts configure the exact same
> way (diff'd),
> > and i don't see this issue.
> >
> > appreciate any clues.
> >
> > ryan

Who is reporting the mac-flaps - the 6509 with fwsm OR fwsm itself?

it appears that you are seeing it on the 6509 that has the fwsm?

if that is the case, the an arp-reply from host at 0024.f716.5142 is being seen via po30 and po579.

Why do you have po30 on the same vlan as fwsm's outside int?

Can you post relevant portions of the config?
./Randy