From: Anderson Alves (mota_anderson@hotmail.com)
Date: Mon May 05 2008 - 07:59:46 ART
Hi,
Yes, I think it does especially because only enabling "udld port" in a
twisted pair Ethernet would not accomplish much thing (to not say anything)
because you would be enabling udld in normal mode (usually used with
fiber-optic cable)
Since you are using RJ-45 I would go for aggressive mode, what are the main
difference between the two?
First the concept of UDLD (I got this text from doc cd)
UDLD is a Layer 2 protocol that enables devices connected through
fiber-optic or twisted-pair Ethernet cables to monitor the physical
configuration of the cables and detect when a unidirectional link exists.
All connected devices must support UDLD for the protocol to successfully
identify and disable unidirectional links.
Normal mode:
In normal mode, UDLD can detect unidirectional links due to misconnected
interfaces on fiber-optic connections
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 interfaces
on fiber-optic links.
I got all this texts from Doc CD (he is definitely your friend :-P)
http://www.cisco.com/en/US/docs/switches/lan/catalyst3550/software/release/1
2.2_25_sec/configuration/guide/swudld.html
HTH,
Anderson Mota Alves
CCIE3 #16778 (R/S, SP and Security)
Technical Instructor
http://www.netmetric-solutions.com
http://www.andersonalves.net
-----Mensaje original-----
De: nobody@groupstudy.com [mailto:nobody@groupstudy.com] En nombre de ccie
champ
Enviado el: Monday, May 05, 2008 7:41 AM
Para: Cisco certification
Asunto: UDLD PORT
GS Experts,
Do you think it make any difference in terms of functionality if *"udld port
aggressive"* is used instead of only *"udld port"*
**
**
*Lets assume that port is a not a fiber optics ethernet port but its a
simple RJ45 copper ethernet port.*
In my opinion, it doesn't make any difference.
Expert comments please
thanks
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