Ascend Archive
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Re: (ASCEND) Overloading of MAX ethernet ports?
>From: Adam Neat <adamneat@ipax.com.au>
>
>It seems that for no apparent reason, the ethernet port on teh 1800's
>start to
>clog up. Ethernet utilisation is only 15% or so and all other servers on the
>10Mbs network can be ping'd at 2 - 10ms whereas the 1800 is ping'd at
>between 5
>and 4000ms.
<snip>
>Strange thing; we think we have found the problem. One of the unix based
>terminal servers maybe sending loads of arp requests or something like
>that. If
>the unit is unplugged from the hub, then all is fine, after a few minuets of
>being plugged in, ms ping's go up to 1500ms
<snip>
>I think all the ICMP re-directs were causing the max or are causing the
>max to
>be unhappy and slogs its ethernet port.
>
>We're replacing the ethernet card just in case.
My 2 cents: Our 4004 used to sporadically go all to hell like that at
random times. Pings over the Ethernet would go up to the thousands, etc.
Turned out to be a bad Ethernet card in a colo'd Linux PC.
The fact that unplugging that terminal server helps is great; that's
exactly how we found our culprit too.
It may help to put the 1800 on an Ethernet switch. It sends traffic only
where it really needs to go, and also you can just glance at the lights to
see if someone's jabbering away. That right there was what led us to our
culprit without even us needing to bother with sniffing the Ethernet.
Peter Lalor Infoasis
plalor@infoasis.com http://www.infoasis.com/
415-459-7991 x102 415-459-7992 fax
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