[K12OSN] OT: still have sluggish system

[Dan Young]

dahopkins at comcast.net wrote:
> There is something going on with the network that is saturating my
> gigabit switch.  The activity lights are almost solid at times.  But,
> it is isolated to the switch.  Maybe the switch is having issues,
> don't know.  Have completed virus scans, malware, etc with no
> positive leads.  None of the NICs on any servers are showing dropped
> packets, just a lot of traffic.

Are you using the traditional "LTSP on it's own segment" setup?

> I am going to start turning off services until the network goes quiet
> and see if that tells me something.

Good idea. If that doesn't pan out, I'd start unplugging stuff until the
traffic drops off. I've seen saturated networks caused by network loops
(think crossover cable plugged into two ports on the same segment).
Heck, some switches "auto-crossover" so you can plug in a
straight-through cable to two ports to get the same effect.
Spanning-tree, of course, takes care of this, but can be it's own sticky
wicket. I've also seen flaky switches cause broadcast storms. You have a
spare switch around?

-- 
Dan Young <dyoung at mesd.k12.or.us>
Multnomah ESD - Technology Services
503-257-1562