[nsp] a question on LATE COLLISION

From: Tatsuya Kawasaki (tatsuya@kivex.com)
Date: Thu Mar 15 2001 - 13:29:37 EST


Hi Guys,

I have a question.

One of our Building is getting a lot of late collision.

well there is a scoop.
say this building has followind devices
A x.x.x.2
B x.x.x.3
C x.x.x.4
G x.x.x.1

C is a quite bit far way from others.
close to 280ft via Cat 3(house pairs)

others are relatively close to hub.
All needs to talk to G to get out to internet.

G log shows that
!
 %LANCE-5-LATECOLL: Unit 0, late collision error
!

when we removed C out of net, it "appeared" to run without
LATECOLL Errors.
(I have moved to different place in the HUB but no changes.)

If it is ineed C source of Late collision then can I duplicate
via sending "large" packets to LAN while C is speaking.
ie continous ping to C while sending "large" packet (extended ping)
to any hosts in LAN.

Here is a puzzle, I can not duplicate it. When I do that, I got some
collision but not a lot.

What is wrong?
Any suggestions?

TIA,
Tatsuya

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Tatsuya Kawasaki
Allegiance Telecom
Unlock the Power of the Internet
http://www.kivex.com
Phone 301.215.6777 Fax 301.215.5991
Affiliation given for identification not representation
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