From: Wilson, Cecil (Cecil.Wilson@servicemaster.com)
Date: Mon May 19 2008 - 14:27:57 ART
Hello
Can someone please clarify, if UDLD aggressive mode is use for fiber links. Since there are no fiber connection in the lab, does that mean there should be no need for the aggressive mode option? Is this correct?
Cecil
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Michel Grossenbacher
Sent: Monday, May 19, 2008 10:57 AM
To: Dale Kling
Cc: Daniel Fredrick; ccie; Cisco certification
Subject: Re: Could anybody explain why udld port command is not available under the int port12, while it is available on the member of thie etherchannel group?
Yes it can be used also for Twisted-Pair wires, as you said in aggressive
mode:
In aggressive mode, UDLD can also detect unidirectional links due to one-way
traffic on fiber-optic and twisted-pair links and to misconnected ports on
fiber-optic links.
http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12.2_25_see/configuration/guide/swudld.html
best regards
Michel
On 18/05/2008, Dale Kling <dalek77@gmail.com> wrote:
>
> Hmm, I thought it could be used for both. You just have to use aggressive
> for TX?
>
> Dale
>
>
> On Sun, May 18, 2008 at 10:54 AM, Daniel Fredrick <dfredrick@gmail.com>
> wrote:
>
> > UDLD is for fiber. it's to detect when either the Tx or Rx is down and to
> > avoid physical loops. Port channel is virtual... to it doesn't have a Tx
> or
> > Rx, and it's not fiber.
> >
> > -Dan
> >
> > On Sun, May 18, 2008 at 8:52 AM, ccie <ccie@just-horizon.com> wrote:
> >
> > > Could anybody explain why udld port command is not available under the
> > int
> > > port12, while it is available on the member of this etherchannel group?
> > >
> > >
> > >
> > > Regards,
> > >
> > > Amin
> > >
> > >
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