aaron at wholesaleinternet
Oct 30, 2007, 9:42 AM
Post #4 of 5
Thanks for the reply,
>The first thing that comes to mind is a
>broadcast storm. Are you sure
>there are no L2 loops in your topology?
Here's a rough flow:
Internet -- BD6808(1) -- BD6808(2) -- Other stuff
There are no L2 loops. Both BD's are connected by a single piece of fiber.
In addition all the ports are on separate VLANs and the boxes are routing
between those VLANs.
>What is the box connected to?
>Are you running any QoS, ping is
>a very bad method of determining
>traffic behaviors as it is always Best Effort.
No QOS. Yes, I understand that Ping is a bad indication, especially on an
Extreme box. What it indicated though is the spike in CPU utilization which
is what I'm most concerned about.
>You talk about a outside box, I assume
>this is a client connected to the
>switch. Is it possible to run mirroring on
>that port and observe the
>traffic patterns when the ping times spike?
This is my next step. I think I've narrowed it down to a loop that's
created when a VLAN drops off the network. Packets bounce between the two
routers. I'm about 70% sure this is what's causing it. That every 30
minutes something is scanning my network and every vlan that's not active is