(PM) Re: ISDN NO-SERVICE on PM2

Robert M. Zachok (rmz@exit109.com)
Sun, 11 Jan 1998 12:29:04 -0500

It seems that there are two NO-SERVICE issues still open on the PM2/3.7.2.
The first is the case where the ISDN ports randomly enter the NO-SERVICE
state, and the only solution is to reboot the box. We've only seen this one
once in the last six months. Usually, resetting Dxx brings the
line back up. In most instances, we've found the trouble to be a bad BRI
line, and having the telco repair it has corrected the NO-SERVICE issue.

The second, and to me, the more severe, is the memory leak that occurs when
BRI ports are in certain NO-SERVICE states. I've watched PM2 memory slowly
disappear while a port was in this state.

This happened to me again this week when Bell Atlantic accidentally took
two of our BRIs out of service. We were getting a sudden rush of complaints
from our commercial ISDN customers.

A quick sho mem, indicated fewer than 300 bytes of memory available. It
took a reboot of the box, followed by deleting the spids from the port
configuration to stop the memory leak.

I had opened a trouble ticket with support a month or two ago, when we had
a noisy BRI line that was causing the same problem. I even tracked memory
usage for a couple of days while support checked it out. Fortunately, the
circuits were repaired by Bell, and the memory leak went away, but I don't
like the idea that having a problem with one or more BRI circuits can cause
my terminal server to become inoperable over a period of 24 - 48 hours.

As far as I'm concerned, the PM2 memory leak problem is still alive and
kicking in 3.7.2.

Bob

-------------------------
Robert M. Zachok, Atlantic Internet Technologies
rmz@exit109.com 628 Shrewsbury Ave.
(732) 758-0505 Red Bank, NJ 07701
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