RE: multicast rate-limit

From: simon hart (simon@harttel.com)
Date: Sun Sep 25 2005 - 04:27:12 GMT-3


RE: multicast rate-limitDave that's as maybe, but please refer to the Doc Cd
on this matter:-

Note If a multicast storm control suppression level is exceeded on a switch,
all traffic (multicast, unicast, and broadcast) is blocked until the
multicast traffic rate drops below the threshold. Only spanning-tree packets
are passed. If the broadcast or the unicast storm control suppression level
is exceeded, only that type of traffic is blocked until the rate drops below
the threshold.

Command Reference link

http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12225sec/3550cr/cl
i2.htm#wp3431922

Configuration Guide link

http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12225sec/3550scg/s
wtrafc.htm#wp1237812

By using

Storm-control Unicast you will limit unicast

Storm-control broadcast you will limit broadcast

Storm-control multicast, and you will limit the lot (based upon Mcast
threshold)

This is a really important point that can you really trip you up

Simon
  -----Original Message-----
  From: Schulz, Dave [mailto:DSchulz@dpsciences.com]
  Sent: 25 September 2005 02:33
  To: simon hart ; Nawaz, Ajaz ; nobody@groupstudy.com; Rajib Khan ;
ccielab@groupstudy.com
  Subject: RE: multicast rate-limit

  There are separate options under the storm control for either unicast,
broadcast or multicast.

  -----Original Message-----
  From: simon hart
  To: Schulz, Dave; Nawaz, Ajaz ; nobody@groupstudy.com; Rajib Khan ;
ccielab@groupstudy.com
  Sent: 9/24/2005 6:39 PM
  Subject: RE: multicast rate-limit

  Point to note with storm control Multicast. When the threshold for
  Mcast is
  exceeded then all Unicast, broadcast and Mcast is blocked. Depending on
  the
  question, then storm-control multicast may not be a good option

  Simon

  -----Original Message-----
  From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
  Schulz, Dave
  Sent: 24 September 2005 20:54
  To: Nawaz, Ajaz ; nobody@groupstudy.com; Rajib Khan ;
  ccielab@groupstudy.com
  Subject: RE: multicast rate-limit

  You also may want to keep the storm-control command in your backpocket,
  when
  needed to limit traffic types on your switch ports. Just an additional
  thought.

  Dave

  -----Original Message-----
  From: nobody@groupstudy.com
  To: Rajib Khan; ccielab@groupstudy.com
  Sent: 9/24/2005 2:40 PM
  Subject: RE: multicast rate-limit

  I think you are looking for this...

  <ftp://ftpeng.cisco.com/ipmulticast/config-notes/multicast-rate-limit.tx
  t>

  Hth
  Ajaz Nawaz

  -----Original Message-----
  From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
  Rajib Khan
  Sent: 24 September 2005 18:06
  To: ccielab@groupstudy.com
  Subject: multicast rate-limit

  Hi Group,

  Does any one know any good link for "ip multicast rate-limit". I just
  want
  to see some configuration example.

  Thanks in advance

  Raj

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