[c-nsp] Nexus 7K NX-OS Upgrade

[Colin Whittaker]

On Sat, Nov 17, 2012 at 05:28:48PM -0000, Antonio Soares wrote:
> Another long night... The upgrade of one Nexus was completely clean, the
> second one was a nightmare. One M1-32XP card remained in the state
> "powered-up" forever... The reload didn't make it work, neither the re-seat
> or even the NX-OS downgrade... Had to open a P1 TAC case and then the
> engineer said it was a faulty card. Got the replacement but had to delay the
> installation 48 hours.
> 
> Anyone has have bad experiences with this M1 type of cards card lately ?
> It's the second one that gets faulty in less than a year. It seems the MTBF
> is inversely proportional to the price :(

Upgrade cycles tend to flush out latent faults in the linecards.
When doing upgrades it is best to have spare cards on hand to handle
those that fail.

The failure rate on the M1 cards has gotten a lot better over the last
two years. Gone are the days of 20% of the cards being DOA.

Colin

-- 
Colin Whittaker					+353 (0)86 8211 965
http://colin.netech.ie			            colin at netech.ie