Interface resets

Unanswered Question
Oct 2nd, 2008

Hi All,

I have a 1841 with a WIC-4ESW and a WIC1-ADSL installed, running Advanced IP services version 12.4(15)T6.

I am seeing a number of interface resets on interface fa 0/1 which is the lan facing port. It is connected to a unmanaged (cheap) switch.

The config on the port is as follows:


BRU1RT01#sh run int fa 0/1

Building configuration...

Current configuration : 181 bytes


interface FastEthernet0/1

description ### To BRU1 LAN ###

ip address

zone-member security Inside

ip tcp adjust-mss 1412

duplex auto

speed auto



I know I should have the port set to 100/Full.

My question is:

Is there a way to tell from "sh int fa 0/1" *when* the interface resets occured?

Also, how long would a typical fast ethernet reset take?

I am seeing problems with Citrix users at this location and the time the interface reset is taking is longer than Citrix session reliability can account for.

Thank you


I have this problem too.
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bob.bartlett Thu, 10/02/2008 - 09:18


issue a clear counters f0/1 and that will reset the counters also if you do a show interface f0/1 check to see if you are getting late collisions or other errors

Kevin Brennan Thu, 10/02/2008 - 23:17

Hi Bob,

Yes, I have cleared the counters, but before I did there were no other errors besides the interface resets.

I suspect there may be a faulty cable or faulty switchport involved.



Kevin Brennan Sat, 10/04/2008 - 01:09

It turned out to be a flakey cable.

replaced the cable and the problem went away.




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