[c-nsp] Switch lights rapid blinking

[Michael Sprouffske]

At this point, I think I just need to re-design this network and get some vlans in place and work from there.  I should see a decrease in broadcast traffic if I do that.  I'm going to split this building into 3 vlans so that all 3 floors are separate from one another.  This should at least help me isolate the traffic and or this will calm the switch ports down. 




________________________________
 From: Andy Ellsworth <andy at dar.net>
To: "cisco-nsp at puck.nether.net" <cisco-nsp at puck.nether.net> 
Sent: Monday, January 28, 2013 1:22 PM
Subject: Re: [c-nsp] Switch lights rapid blinking
 
Broadcast chatter alone from 200 hosts is likely to light that up like a
Christmas tree.


On Mon, Jan 28, 2013 at 2:51 PM, Michael Sprouffske
<msprouffske at yahoo.com>wrote:

> 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
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