Hi All,
Consider this a a half duplex router port speeaking to a full duplex port on a switch.
The switch is quiet and receiving data from the router. Being full duplex the router
will send when receiving. It sends to the half duplex "BINGO" 'late collision'.
I have found this to be the most common cause. You can really go nuts because NETXray
probably won't see it. Only the half duplex port sees the error. The full duplex
connection has no error. What you might get on a full duplex port is a collision (but
full duplex can't collide now can it?)
Just some thoughts, I make good money on this one.
Teunis,
Hobart, Tasmania
Australia
On Thursday, February 22, 2001 at 05:49:19 PM, Kevin Wigle wrote:
> Group,
>
> There are a few sniffer users on the list and I got a question.
>
> I'm using Net Xray, Sniffer Pro is available (but not installed yet).
>
> We have a problem of out of order packets and just recently I've noticed on
> the router console that we're getting late collisions.
>
> Now I always thought that late collisions were a product of a cable that is
> too long. In this case however, it's fibre from the basement up to a lab to
> a foirl and then a patch cord length of 10BaseT from the foirl to the
> router.
>
> I'm looking at the sniffer output and I don't know what to look for to
> identify late collisions. I don't even know if you can see them or the
> symptoms with a sniffer.
>
> Can anyone (even if you watch other lists.... :-) ) comment if the
> sniffer is even a viable tool to troubleshoot this?
>
> I've been going at it with our ISP for some time now and I need some
> ammunition to get them to do something.
>
> Kevin Wigle
>
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