[c-nsp] Switch lights rapid blinking

[Michael Sprouffske]

I don't see high cpu on any switch.  Traffic seems to flow just fine.  I'm not sure if the ports did this the whole time or if this started one day.  Its hard to say if there has been a change.  This network needs to be rebuilt with proper vlans and removing a /16 from this 200 host network.




________________________________
 From: "A.L.M.Buxey at lboro.ac.uk" <A.L.M.Buxey at lboro.ac.uk>
To: Jeffrey G. Fitzwater <jfitz at Princeton.EDU> 
Cc: Michael Sprouffske <msprouffske at yahoo.com>; "cisco-nsp at puck.nether.net" <cisco-nsp at puck.nether.net> 
Sent: Monday, January 28, 2013 12:50 PM
Subject: Re: [c-nsp] Switch lights rapid blinking
 
Hi,

> Alan, there are many normal things that can cause this, like ARP broadcast, unknown unicast especially in a large flat nets.

as I said, it could be the usual blinking...they do blink a lot even in
a test/lab environment... and checking whats going on on uplink
might be key for flat network checking. the checking counters/processor etc
that was also mentioned is useful.  

alan