Re: Multicast entries in Mac-address table

Hi Irfan,

I woll try to answer you, after google it...So check it twice.

Seems there's some keys for this behaviour at Cat 6500. This behaviour
started to fix a misfunction at 65k because it was unable to see multicast
traffic.

Origin:

   - Basically it used to appers after third party element is introduced or
   connected to Catalyst. For instance, a 720 supervisor or a Firewall module.

Please note you couldn't expect the same behaviour from modular Catalyst
than a compact one.
HTH,
Robclav

2011/8/8 Irfan Sid <lifeoverip_at_gmail.com>

> Guys, I checked on 6500 platform, and 2960 switches and i dont see
> Multicast entrires for the broadcast mac addressa created for each vlan. Is
> this an anomaly or bug?
>
> On Sun, Aug 7, 2011 at 2:21 PM, Irfan Sid <lifeoverip_at_gmail.com> wrote:
>
> > I wanted to enable Port-security on my host ports, but on examing the
> > Mac-address table i found that some of the host ports had multicast
> entries
> > learnts on them
> >
> > What are these muliticast entries for? can I clear them off and enable
> > port-security with max mac address 1.
> >
>
>
> > Multicast Entries
> > vlan mac address type ports
> >
> >
> -------+---------------+-------+--------------------------------------------
> > 1 ffff.ffff.ffff system Gi1/1,Gi2/1
> > 10 ffff.ffff.ffff system
> Switch,Gi4/3,Gi4/4,Gi4/5,Gi4/6,Gi1/1,Gi2/1
> > 100 ffff.ffff.ffff system
> Switch,Gi3/2,Gi3/3,Gi3/4,Gi3/5,Gi3/6,Gi3/12
> > Gi3/14,Gi3/15,Gi3/16,Gi3/17,Gi3/18,Gi4/3
> > Gi4/4,Gi4/5,Gi4/6,Gi1/1,Gi2/1
> > 101 ffff.ffff.ffff system Switch,Gi1/1,Gi2/1
> > 102 ffff.ffff.ffff system Switch,Gi4/3,Gi4/4,Gi4/5,Gi4/6,Gi1/1,Gi2/1
> > 103 ffff.ffff.ffff system Gi4/3,Gi4/4,Gi4/5,Gi4/6,Gi1/1,Gi2/1
> > 104 ffff.ffff.ffff system Gi4/3,Gi4/4,Gi4/5,Gi4/6,Gi1/1,Gi2/1
> > 200 ffff.ffff.ffff system Gi3/16,Gi1/1,Gi2/1
> > 301 ffff.ffff.ffff system Switch,Gi1/1,Gi2/1
> > 302 ffff.ffff.ffff system Switch,Gi1/1,Gi2/1
> > 303 ffff.ffff.ffff system Switch,Gi1/1,Gi2/1
>
>
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-- 
Robert Clavero
CCIE RS/wr, CCNP, CCSP, CCSE NGX, SCSA 9, WLFES, BNP y JNCIA WX
blog:http://robclavbcn.blogspot.com
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