RE: traffic suppression - storm control 3560

Bcast storm control also impacts mcast. Mcast does not impact bcast.

I've never done both at the same time. I would assume the most specific
command mcast would take priority over the bcast statement.

Michael Kiefer

Sent from my Droid Bionic
On Feb 2, 2012 12:04 PM, "Aaron" <aaron1_at_gvtc.com> wrote:

> Thanks Michael/Paul, wow Mike, just back from passing the lab and already
> giving back to the community ! die hard
>
> Does bcast suppression affect mcast?
>
> Does mcast suppression affect bcast?
>
> If I did BOTH mcast and bcast traff suppression (aka storm control) on the
> same interface, would I want to treat this in any special way? There is a
> 1
> in the least significant bit of the most significant byte in a bcast
> (fffff...) frame too.
>
> Aaron
>
> -----Original Message-----
> From: Paul Negron [mailto:negron.paul_at_gmail.com]
> Sent: Thursday, February 02, 2012 9:06 AM
> To: Michael Kiefer; Aaron
> Cc: Cisco certification
> Subject: Re: traffic suppression - storm control 3560
>
> I think Aaron understands that point very well.
>
> I think what he was asking was ....."Does the feature affect both types of
> traffic in the same way"?
>
> Is that correct Aaron?
>
> Paul
> --
> Paul Negron
> CCIE# 14856 CCSI# 22752
> Senior Technical Instructor
>
>
>
> > From: Michael Kiefer <mjkiefer_at_gmail.com>
> > Reply-To: Michael Kiefer <mjkiefer_at_gmail.com>
> > Date: Thu, 2 Feb 2012 08:56:56 -0500
> > To: Aaron <aaron1_at_gvtc.com>
> > Cc: Cisco certification <ccielab_at_groupstudy.com>
> > Subject: Re: traffic suppression - storm control 3560
>
> (I meant to say it has a 1 as the least significant bit of the most
> significant byte.)
>
> >
> > A multicast is a broadcast, but a broadcast is not a multicast.
> >
> > Remember that the storm control features are layer 2 based.
> >
> > Broadcast is FF:FF:FF:FF:FF:FF
> > Mulicast starts with 01: for IPv4
> >
> > http://en.wikipedia.org/wiki/Multicast_address
> >
> > HTH,
> >
> > Michael Kiefer
> >
> > CCIE#34420 (R&S)
> >
> >
> >
> >
> >
> >
> >
> > On Thu, Feb 2, 2012 at 8:39 AM, Aaron <aaron1_at_gvtc.com> wrote:
> >
> >> Does bcast and mcast storm control have anything to do with each other
> or
> >> are they treated completely separate? Just wondering if there is any
> >> subtleties or inter-relationships that bcast and mcast have with one
> >> another
> >> in 3560 storm control/traffic suppression.
> >>
> >>
> >>
> >> Aaron
> >>
> >> switch(config-if)#storm-control ?
> >>
> >> action Action to take for storm-control
> >>
> >> broadcast Broadcast address storm control
> >>
> >> multicast Multicast address storm control
> >>
> >> unicast Unicast address storm control
> >>
> >>
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> >>
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Received on Thu Feb 02 2012 - 12:42:27 ART