PP1424 stops routing

[telecom116]

I have several PP1424s in a fiber ring (using OSPF as the routing protocol). Updated the code some time ago to 2.1.4.

About 49 days ago I basically rebuilt the configs on all of the switches to get them to be similar. At about the 49 day uptime mark one of the switches rebooted on its own - no power outage or anything else in the log indicating a problem.

A day or so later, each of the remaining 4 switches (at separate times) stopped routing on the fiber ring, yet it appeared that the switches were still sending OSPF Hello packets, which meant that my ring didn't recover properly to the remaining sites on the ring. After about 15 minutes, the switch would begin routing properly again. All switches had been up between 49 and 50 days.

Vendor tells me that a Nortel engineer said there were similar problems on the PP16xx switches and that they had to roll back code. Anyone know any more about this?

 

[NMSman]

I seem to remember reading something about a known issue with PP1400 that the SysUpTimer (or some other counter) cycles after about 49 days (4096000 seconds) and the switch reboots. I have seen this with other networking equipment in the past and is normally solved in a later (bug fixed) version of code.
Hope that helps

 

[telecom116]

Hmm, interesting.

I opened a ticket with Nortel last week, sending our net topology and a sample config, but the engineer has been out of the office and haven't heard back from him since sending him these items.

When I last checked 2.1.4 is the latest PP1424 s/w version.

 

[Alainv]

For the 1600, that problem has been solved. it's indicated in the release notes.

And if your support guy is in holiday, just ask another engineer.