From: Tru64 User (tru64user@yahoo.com)
Date: Tue Apr 23 2002 - 15:07:47 EDT
Yet another update.
First thanks to Selden Ball, Steve Herber, J Bacher, B
Vickers and Kurt Ludwig for their initial suggestions.
All seem to be suggesting port problems more or less,
and DNS timeouts.
#Declaring variables
tu0 = DEC Tulip (10Mbps), DECchip 21040: Rev. 2.3
tu1 = DEC Tulip (10/100) DECchip 21140 Rev. 2.0
In my territory, i tested changing speed and modes on
the card. Setting speed (of tu1)to 10Mbs, kills the
card altogether, it becomes un-pingable even from same
host thru tu0(dual NICS)
It becomes pingable at speed 100Mbps, either half
duplex or full. But, round trip stats are bad, with an
average of 30ms over 5mins period.
Also, at 100Mbs for tu1, it affects tu0 and makes it
have intermittent connectivity, thus defeating
everything.
At 10Mbps for tu1, it dies (as said b4), but tu0 then
works perfectly!!!
But wait, there is more!!At this point, I cannot ssh
from another host on same subnet, to any other
host.....when tu1 is down....i get errors "host "tu1"
is not responding, still trying. However, i can telnet
into tu0 or telnet into any other host, but not ssh.
Any takers for the ssh problem??
At the mean time, i have to place a call with the
company managing centerwide networks, to try and
figure out the port problems, if any, and dns
timeouts.
_thanks all
Richard
--- Selden E Ball Jr <SEB@LNS62.LNS.CORNELL.EDU>
wrote:
> Check the state of the network switches between the
> NCDs and the
> load hosts. Your symptoms are consistant with the
> switch ports being
> set to the wrong duplexity or, less likely, a
> heavily overloaded switch.
>
> Maybe someone upgraded the switch firmware
> overnight?
> Or was there a power glitch? The switch ports may
> have
> came up in the wrong state when the switch(es)
> rebooted.
>
> If the switches autonegotiate the speeds, try
> unplugging the NCD
> ethernet cables briefly. That'll force a
> renegotiation.
>
> I hope this helps a little.
>
> Selden
> ======
> Selden E. Ball, Jr.
>
>
> you wrote
> > Greetings,
>
> > I have a couple of NCD X-terminals that all just
> > decided not to boot today.
> > They all just hang, and seem to take forever
> reading
> > font directory. Have them configured to boot thru
> tftp
> > from 4.0g systems. Changing the primary host for
> > bootup doesn't change a thing......which makes me
> > wonder where to look.
> > Multiple Xterms, trying to boot from multiple
> hosts,
> > same problem, just hangs. I can log into server
> > without any problem via exceed from PC, and all
> logs
> > are happy......tcpdump shows regular
> > interaction,between exterm and server.
> > Any pointers please??
>
> > I gave one of them 15minutes, and finally i got
> the
> > login screen, then after password input, it hangs
> one
> > more time, then goes to a completely black
> screen!!
> > Everything was happy as of last night....nightmare
> > started this morning.......i also restart links
> > (ifoconfig tu0 up/down)...no effect
>
> > I am clueless at this point
> > Any pointers will be very helpful
>
> > =====
>
>
> > __________________________________________________
> > Do You Yahoo!?
> > Yahoo! Games - play chess, backgammon, pool and
> more
> > http://games.yahoo.com/
=====
__________________________________________________
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