We have a number of PM2E-30's in operation, all run v3.3.1, but one is
being a bit of a problem...
This PM is in a remote location, with a single CPU at the location with
the PM performing primary authentication duties.
On numerous occasions, in an unpredictable manner, the PM in question
will fail over to the alternate authentication host, which is on our
main network and as yet does not have the users the remote PM serves
in it's UAF file. The result is that several times a day, the users
this POP serves are unable to login, and receive the "Invalid login"
message. Very frustrating for them and us. No amount of power cycling,
rebooting or other coaxing seems to help. The CPU and network at the
site are very lightly loaded, and radiusd *is* running. TCPDUMP on the
remote network reveals that the PM is sending the radius requests, and
the CPU is sending back replies. The PM, however, seems to be ignoring
these replies and repeats it's request several times and then tries
the alternate auth host.
All of this worked fine until a few days ago, and there have been no
changes to the PM or the auth CPU. Note that it does not do this all
the time. It will insist on consulting the alternate auth host for
a while (10 or 20 mins, maybe) and things will be fine for several
hours. No noticable pattern.
Nothing appears in the logfile except for the occasional complaint
about "requester address mismatch" ... this is rather odd in itself,
and does not seem to coincide with the unwanted failovers in
authentication. The IP address it says the request is coming from is
a valid one for our network, but is not in use at the remote site, and
has never been associated with the PM in question.
Any thoughts on what is going on here? Sounds like this PM is brain
damaged in some way... FLASH corrupt, or something... ??
Any insight greatly appreciated...
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Jim Bender, System Manager | For long you live and high you fly |
Business Data Systems, Inc. | but only if you ride the tide |
jbender@bdsnet.com | and balanced on the biggest wave |
http://www.bdsnet.com/ | you race towards an early grave |
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