This is a pretty common problem these days, apparently. It is caused by
or related to the switch - HOWEVER - it is the PM that isn't recovering
it seems (else why would a re-boot work EVERY TIME). I've got this problem
- one line locks about every day or so.... at that point if *any* other
line needs to re-set with the switch, it locks up too (ie. once the PM is
in "hung" mode, it will only get worse and REQUIRES a reboot - in no cases
will "reset d0x" work). THIS PART is not a switch problem. In my case,
the problem is caused by EXCESSIVE Errs and restarts on one of the BRIs
("sh isdn"). Telco has changed **EVERYTHING** physical on this wire
(and so have we) and it continues... next week I'm turning my attention
to the switch programming... that's all that is left. This has become an
obsession - it's almost a year since we first saw this happening - my last
resort is to tell Bell to order a new BRI and turn that BRI off. We have
14 other BRIs that work flawlessly.
Again - this is a PM BUG, CAUSED by the switch or line, but it is a PM BUG,
after all.
ANSWER: check "sh isdn" for any lines with errors (anything over a couple
is too many). If you have them, GET THEM CLEANED UP!!! You should see
the occurances of this PM BUG drop almost to nil.
(Yes, I've opened trouble tickets... several times in the last year and
have gotten support and we're currently working with support on this).
Later.
Derric
-- Derric Scott Scott Network Services, Inc. P. O. Box 361353 derric@scott.net (205)987-5889 Birmingham, AL 35236