Re: Latency quesstion

[Brian Feeny <bfeeny () mac com>]

Its also possible there are STP issues, so check where you roots are for the vlans and make sure they are 
deterministically set.

Brian

On Mar 18, 2010, at 11:12 AM, Brielle Bruns wrote:

> Dennis,
>
> In large installations, I've always found it helpful when diagnosing LAN issues to isolate floors and departments 
> first - using routers or with devices that can do transparent bridging.  That way, you can walk through each 
> dept/floor testing for the issues, and hopefully find only one location its still affecting.
>
> Its entirely likely that there's either a loop of some sort or a switch has gone off the deep end.  
>
> If you'd like, let him know if he wants to drop me a mail, I can walk through details about the situation and 
> hopefully help him narrow it down.
> ------Original Message------
> From: Dennis Dayman
> To: nanog () nanog org
> Subject: Latency quesstion
> Sent: Mar 18, 2010 7:56 AM
>
> have a friend who has 21 floors of a building in DFW, multiple switches, etc and they started to have latency issues 
> this weekend where half if not all packet are being dropped to folder shares, printers, etc. Suggestions on how they 
> can troubleshoot that? call in a company to help identify it?
>
> -Dennis
>
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> -- 
> Brielle Bruns
> http://www.sosdg.org  /  http://www.ahbl.org