RE: UDLD Follow up

From: Tim (ccie2be@nyc.rr.com)
Date: Sat Jul 05 2008 - 14:53:08 ART


Thanks for explaining that.

Given that aggressive mode seems to be better, would there ever be any good
reason why I shouldn't always just use aggressive mode?

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Jason Madsen
Sent: Saturday, July 05, 2008 12:53 PM
To: Jonathan Greenwood II
Cc: Tim; ccielab@groupstudy.com
Subject: Re: UDLD

Yep, here it is per the Command Ref' Uasge Guideline section:

UDLD supports two modes of operation: normal (the default) and aggressive.
In normal mode, UDLD detects unidirectional links due to misconnected
interfaces on fiber-optic connections. In aggressive mode, UDLD also detects
unidirectional links due to one-way traffic on fiber-optic and twisted-pair
links and due to misconnected interfaces on fiber-optic links.

Jason

On Sat, Jul 5, 2008 at 10:00 AM, Jonathan Greenwood II <gwood83@gmail.com>
wrote:

> Aggressive mode is used for twisted pair/copper connected interfaces, udld
> command by its self is used for all fiber connected interfaces.
>
> HTH
>
> Jonathan
>
> On Sat, Jul 5, 2008 at 10:36 AM, Tim <ccie2be@nyc.rr.com> wrote:
>
> > Hi Guys,
> >
> >
> >
> > Can someone help me understand the difference between regular mode and
> > aggressive mode with respect to UDLD?
> >
> >
> >
> > I've read the Cisco doc's but they're about as clear as mud.
> >
> >
> >
> > Thanks, Tim
> >
> >
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