Slow/hung 100BAseTX half duplex

From: <m.grau_at_kcc.state.ks.us>
Date: Thu, 28 May 1998 12:49:28 -0500

I have an Alpha 1000A 5/4 ( DU4.0D ) connected to a Cabletron
Smartswitch 6000.
It is the only thing on the switch at the moment.

The Alpha is set to auto negotiate which seems successful:

May 27 08:25:51 sunesis vmunix: tu0: auto negotiation on: will advertise
100Base
TX (UTP) port: full duplex
May 27 08:25:52 sunesis vmunix: tu0: link up: negotiated 100BaseTX: half
duplex

However the network on the switch gets slower and slower. Currently
pinging the Alpha results in a ridiculous:

64 bytes from 165.201.4.254: icmp_seq=7 ttl=64 time=582 ms
64 bytes from 165.201.4.254: icmp_seq=8 ttl=64 time=252 ms
64 bytes from 165.201.4.254: icmp_seq=9 ttl=64 time=146 ms

Eventually (every day or two) everything grinds to a complete stop and
the switch has to be re-set. (Re-booting the Alpha doesn't help.)
Messages show:

May 27 08:28:16 sunesis vmunix: tu0: link down
May 27 08:28:19 sunesis vmunix: tu0: link up: negotiated 100BaseTX: full
duplex
May 27 08:28:31 sunesis vmunix: tu0: link down
May 27 08:28:34 sunesis vmunix: tu0: link up: negotiated 100BaseTX: half
duplex

Should I suspect the switch as the problem or the Alpha being set to
auto negotiate?
Any suggestions greatly appreciated.
Received on Thu May 28 1998 - 19:50:35 NZST

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