From: simon hart (simon@harttel.com)
Date: Sun Sep 25 2005 - 13:45:30 GMT-3
Mushtaq,
With the storm control the algorithm will drop packets by default.
If I configure on Fa0/1 (100mb) :- storm-control unicast level 50. I am
telling the IOS that on this port if unicast traffic exceeds 50% of
configured bandwidth (in this case 50mb) within a finite time period, then
drop all further unicast packets until unicast packets drop below the 50%
threshold. The time period by default is 1 second.
It really is all or nothing. If you go over the threshold everything
further gets dropped. If it falls below 50% in the following second then
everything gets passed again. The configuration guide does provide a good
and thorough explanation
http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12225sec/3550scg/s
wtrafc.htm
Now you can modify the default storm-control action as you have pointed out:
Shutdown will put the port into err-disable state, trap will generate an
snmp trap (and will drop packets).
HTH
Siimon
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Mushtaq A. Khan
Sent: 25 September 2005 14:36
To: Cisco certification
Subject: Broadcast Control in 3550
I doing a very simple thing to control broadcast traffic on one of the FE
port in 3550. I have no problem in configuring this, however, I want the
port to be blocked once it reaches the threshold. Switch doesn't give me
such option even though the command (*storm-control action* {*shutdown* | *
trap*} is available on cisco website. I'm running IOS: 12.1(22)EA1a on the
switch. Does anyone has any clue?
Thanks,
Mushtaq
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