[c-nsp] GSR OC3 Eng0 to Eng3

[Pete Templin]

Lamar Owen wrote:

> What sort of failures prompted the card switch?

Ugh.  Card #1 went offline following an IOS upgrade reboot.  Syslog 
messages suggested memory problems.  After being swapped out, a reseat 
of the memory brought the card back to life as a hot spare.

Card #2 began misbehaving with its one and only live link during the 
last NANOG.  'hw-mod slot X shutdown' and a removal of that brought the 
card back to life, but only for a few days.  Card #1 and #2 were swapped.

Then Card #1 began a few instances of random blackholing.  After a 
reboot, it went offline again.  Reseating memory didn't bring it back to 
life this time, so a memory swap with Card #2 was necessary.

Both are in the dumpster now.  Some other Engine 0 cards are soon to be 
freed up; I'm unfortunately tempted to roll back to one of those.

pt