Re: ARP problems
Francois,
I had a similar problem not long ago. I use the BNC style on my nics,
but it turned out, the last box on the lan had a terrible connection.
I cleaned it and re-connected it and the problems stopped. Take a
very close look at your RJ45's and the female on your nic's, is it
discolored? This is a common problem I see very often on RJ11
phone lines and the DC caused corrosion.
If they look pretty worn or discolored, replace them. If they need to
be replaced, get good ones that are silver plated!
Best of luck to you.
On Tuesday 27 February 2001 18:12, Francois Gouget wrote:
> From time to time my network dies. Most of the time I have two
> machines on it and the symptom is that they cannot ping each other
> anymore. At the same time I see that all that a ping triggers is an arp
> packet. Here's a typical tcpdump trace:
>
> 11:16:52.909161 amboise > 192.168.1.255: icmp: echo request
> 11:16:53.936272 amboise > 192.168.1.255: icmp: echo request
> 11:16:54.936322 amboise > 192.168.1.255: icmp: echo request
> 11:16:59.247968 arp who-has oleron tell amboise
> 11:17:00.246100 arp who-has oleron tell amboise
> 11:17:01.246096 arp who-has oleron tell amboise
> 11:17:02.266239 arp who-has oleron tell amboise
> 11:17:03.266105 arp who-has oleron tell amboise
> 11:17:04.266085 arp who-has oleron tell amboise
> 11:17:05.286220 arp who-has oleron tell amboise
> 11:17:06.286096 arp who-has oleron tell amboise
> 11:17:07.286088 arp who-has oleron tell amboise
> 11:17:08.306238 arp who-has oleron tell amboise
> 11:17:09.306087 arp who-has oleron tell amboise
> 11:17:10.306080 arp who-has oleron tell amboise
> 11:17:23.592631 arp who-has oleron tell amboise
> 11:17:23.592900 arp reply oleron is-at 0:a0:24:ff:e5:ab
> 11:17:23.592935 amboise > oleron: icmp: echo request
> 11:17:23.593267 oleron > amboise: icmp: echo reply
> 11:17:24.646275 amboise > oleron: icmp: echo request
> 11:17:24.646652 oleron > amboise: icmp: echo reply
>
> There must be something wrong on my desktop because:
> - the only way I have found to fix this is to unplug its RJ45 ethernet
> cable from the switch and replug it.
> - other machines can still ping each other (when there's actually more
> than one 'other machine' on the network)
>
> * desktop
> kernel 2.2.17
> 3c59x
> it's also the DHCP server
>
> * switch
> In the middle I have a small Unicom MiniSwitch/5.
>
> * laptop
> kernel 2.4.0test9 / windows 98, it happens with both
> currently with a 3c589_cs but I had the same problem with a linksys
> PCMPC100 (now dead, broken dongle)
>
>
> Does anyone know what could be wrong?
>
>
> --
> Francois Gouget fgouget@free.fr http://fgouget.free.fr/
> War doesn't determine who's right. War determines who's left.
--
Jaye Inabnit, ARS ke6sls e-mail: ke6sls@arrl.net
707-442-6579 h/m 707-268-4074
http://www.qsl.net/ke6sls ICQ# 12741145
This mail composed with kmail on kde on X on linux warped by debian
If it's stupid, but works, it ain't stupid.
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