[c-nsp] uBR10K PRE4-RP Version 12.2(33)SCG6 - PFX Crashes

[Skyler Blumer]

Hello,

In the past two weeks, we've had 4 different UBR10Ks with PRE4s crash 
for unknown reasons. They're all on 12.2(33)SCG6, and have been with no 
issues for about two years. We didn't make any configuration changes, or 
push any new features leading up to this, they just seemed to happen out 
of nowhere.

I've attached running-configs and crash-logs from 3 of the CMTS'. Also I 
managed, to get a 'show stack' from one of them because it has redundant 
PREs and wasn't cold rebooted.

Some additional background - We contract with a third party for our 
CMTS/Modem NMS that our CSRs use. It's mostly SNMP. based, but they do 
have limited read-only ssh access to screen-scrap a few things. I only 
say this because maybe they started using a different command that 
exposed some bug. This is completely grasping at straws, but it's the 
only thing I could think of that may have changed.

Anyway, has anyone had similar issues with this version of IOS or any 
version with a PRE4 for that matter? Any experience with a show command 
that crashed the PRE and if so what command was it? If anyone can find 
anything significant from the logs/configs I attached that would be 
amazing, I've been banging my head against this for the past couple weeks.

Let me know if you need more information.