Had some network communication issues last night on one of the nodes of a 2
node NW 65 cluster. The node that is abending was the master ip address
resource at the time. The node will continue to abend as long as the master
ip address resource is on the other node. The node will not abend if it is
hosting the master ip address resource.

I get the abend message:

Abend on P00
At least one of the nodes is alive in the old master's node partition. This
node is not in the old master's node partition.

Although the node is running right now it appears to be having intermittent
communication issues with the other cluster node and another standalone NW
server.

It appears both network cards in the problem node are working correctly
now.

Any ideas how to correct this problem?

Thank you,
Monte

This is not an uncommon problem with 2 node clusters. Generally if you
reboot the node that abended it will come up fine. If not I have had
cases where I had to reboot both nodes. The problem is that the two
nodes can't communicate via the LAN for some reason so you get into a he
said she said scenario.


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utman
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Yes, I have tried several reboots but the problem is still there. The LAN
appears to be working fine. However, the console shows the node having the
abend problem losing communication with the "good" node and also with
another standalone NW 6.5 box. The good node shows it losing &
re-establishing communication with the abending node every 20-30 minutes.
The good node is not losing communication with the standalone NW server.

The conolse message shows the date & time communication is lost and
DS-10054.34-271. Could there be a problem with eDir that is causing the
communication problem and thus the abend?

No, but lack of communication will cause both cluster and eDir problems.
I'm sure you have an underlying comms issue.

What SP on NW 6.5? What exact lan driver, date and version?


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Andrew C Taubman
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NW 6.5 SP6, attached to an EMC SAN. EMC has never validated their software
beyond SP6, thus the reason it isn't on at least SP7.

LAN driver is Intel CE1000.LAN, version 7.84, March 9, 2005. It appears the
newer drivers for the Intel Pro/1000 server adapter are named E1000.LAN. Is
there a way to replace the driver with the newer one or do new boards have
to be configured?

Monte

Simply copy then to sys:system, and edit autoexec.ncf or netinfo.cfg,
whichever you use, and change the LOAD line to E1000 where it says
CE1000.

Note I'm not saying this driver is likely the problem, the Intels have
been pretty good. More likely you have a faulty lan card, cable, router,
switch or similar.


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I do suspect a bad switch port and will do some more investigating to
isolate the problem.

Monte