[c-nsp] Power Problems - 6509

[Justin M. Streiner]

On Mon, 27 Nov 2006, Paul Stewart wrote:

> The mode is redundant but if the power gets much lower, will the power
> "split" between the power supplies giving up redundancy or what will the
> outcome be?

It _might_ split for now, but be prepared for the possibility of strange 
things happening, like modules shutting down on their own.  You may also 
get warnings that the chassis can't supply all of the requested power, so 
some modules will not be energized.  The slots are normally energized in 
numerical order, so whatever modules you have at the end will not get 
powered up if you're short on juice.

If/when you upgrade to Sup720s, I believe those slots will get priority 
on power since nothing else will come up if the sups can't be energized.

jms

> We also have a very strange issue with a connection coming from a
> GBIC-GigE connection to a remote 6503 where the connection link stays up
> but the traffic stops passing.  In the middle of this link is a Nortel
> Optera Metro 3500 running OC-48 which is where we've been thinking the
> problem is but so far haven't been able to find anything.  In the
> meantime I got looking at the power output and was wondering if it could
> have any effect on this problem.  For example, in the past 48 hours the
> traffic has stopped passing on the GigE 5 times varying from 30 seconds
> up to 20 minutes in length.  During the outage, both sides of the GigE
> link show up/up for interface and nothing is logged as being down hence
> my reasoning for it possibly being the Nortel side of things....
>
> I've swapped GBIC's, fiber jumper cables, ports/slots and we even
> replaced the entire 6503 switch itself on the remote end ... no luck.
>
> Thanks,
>
> Paul Stewart
> Network Administrator
> Nexicom Inc.
> http://www.nexicom.net/
>
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