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North American Network Operators Group

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Re: Weird networking issue.

  • From: Spencer.Wood
  • Date: Tue Jan 07 14:38:38 2003

Check the duplex setting for your  FastEthernet Port on the Router and that on your Switch/Hub.

Sounds like you might have a duplexing issue..


Spencer Wood, Network Manager
Ohio Department Of Transportation
1320 Arthur E. Adams Drive
Columbus, Ohio 43221

Phone: 614.644.5422/Fax: 614.887.4021/Pager: 866.591.9954


Drew Weaver <>
Sent by:

01/07/2003 02:19 PM

        To:        "''" <>
        Subject:        Weird networking issue.

Hi, this is kind of a newbie question but this doesn't make a whole lot of
sense :P

I have an etherstack hub connected to a FastEthernet port on a cisco 3660
router, these are the stats when I do a show int fast0/0:

5776 input errors, 5776 CRC, 2717 frame, 0 overrun, 0 ignored

Whats weird is I just cleared the counters 12 minutes ago, and already there
are almost 6000 CRC errors. This connected via a standard Cat5 ethernet
cable, I have tried replacing the cable to noavail.

Is this a fairly normal situation, If so that's great, but it seemed rather
ridiculous to me, and if it is not a normal situation, what would cause

Any ideas are appreciated.
-Drew Weaver

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