[alcatel-nsp] Low voltage condition causes CPM2 and IOM2 to fail

Koch, Andrew andrew.koch at tdstelecom.com
Thu Jun 27 01:04:38 EDT 2013

Correct, The cards have been unusable and are replaced. 


 -----Original Message-----
From: 	Dan Snyder [mailto:sliplever at gmail.com]
Sent:	Wednesday, June 26, 2013 06:14 PM Central Standard Time
To:	Koch, Andrew
Cc:	alcatel-nsp at puck.nether.net
Subject:	Re: [alcatel-nsp] Low voltage condition causes CPM2 and IOM2 to fail

We might have just seen this. The cards never boot and have to be replaced?

Отправлено с iPhone

Jun 26, 2013, в 5:10 PM, "Koch, Andrew" <andrew.koch at tdstelecom.com> написал(а):

> We have run into a couple instances where on a -48v DC system, we have had the office voltage drop below 42v.  When this occurs, the CPM2 and IOM2 on our 7750 routers fail to restore when appropriate power levels are restored.  In both instances, multiple components (both CPMs, or multiple IOMs) have simultaneously failed to boot on the chassis. These failed components do not POST.  It appears some type of memory corruption or zeroing occurs.
> Has anyone else seen these troubles?
> Thanks for any thoughts.
> Andy Koch
> TDS Telecom - IP Network Operations
> andrew.koch at tdstelecom.com
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