If its a backbone switch hopefully its new enough and had enough money spent on it
that it is also a managed switch. If you telnet / web-browse into it and check the
error logging and suchlike on the port the "bad" exchange server is on, is the switch
whining about anything on that port?
Are the port settings the exact same as they are for servers which are behaving?
Nobody plugged a traffic sniffer into another port and "mirrored" it to the bad
exchange server's port?
If the switch and server NIC are set to auto negociate speed and duplex settings, what
happens if you set them manually? (If the connection is 100mb rather than 1ghz, try
setting to a nice conservative "fixed" 100mb and half-duplex).
Now what about the switch(es) serving the clients. Not all the same switch by any
chance? Or same remote cabinet and sharing the same backbone link back to the server
room? What happens if you lock a bad workstation and it's switch port down to
100mb-half duplex instead of auto negociate?
hth
Rob
-----Original Message-----
From: Gonzalez, Alex [mailto:[EMAIL PROTECTED]
Sent: Wed 26/03/2003 20:31
To: Exchange Discussions
Cc:
Subject: Possible hardware issue?
We have sort of a weird issue going on here and I am wondering if anyone
else has seen this. We have an EX2000 server that runs smooth for some
users and poorly for others. All the clients are different ranging from
97-2002 so I have taken the client out of the picture. We have changed
NICs and the PCI slots on the motherboard and we are still getting the
same issues. I performed a ping to it from a workstation that is
getting good response with 64k of data and I get clean responses at
about 12ms. When I perform the same ping from another workstation that
is having difficulties I get a lot of time outs and when I do get
responses they are more like 120ms. We have changed the cable, the
switch that it goes to, and even plugged a laptop into the same switch
and we are getting the same response. The switch that it plugs into is
the backbone switch directly. If we move people to another exchange
server everything works fine. Has anyone ever seen something like this
and if so what did you do? There are also some master browser errors
(event 8003) in the event log that talk about UDP but I haven't been
able to make anything of them either. Any help would be greatly
appreciated.
Alex
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