From: Oliver Ziltener (ziltener@netcloud.ch)
Date: Sun Nov 30 2003 - 15:48:51 GMT-3
Hey Juan
even if you clear vlan 1 on trunks, PAGP is STILL propageted!
You stop only usertraffic and stp!
best regards
Oliver
-----Urspr|ngliche Nachricht-----
Von: jfaure@sztele.com [mailto:jfaure@sztele.com]
Gesendet: Samstag, 29. November 2003 20:47
An: Mujica, Raul - (Per)
Cc: ccielab@groupstudy.com
Betreff: Re: Etherchannel one way-link question
Hi Raul:
What is your native vlan for these Etherchanel trunks? Belong your config i
supose it is vlan 1. As maybe traffic control for PAGP goes through this
vlan, and this vlan isn't allowed in the trunks, i supose this cause link
flapping.
By the other way, if you force the Etherchannel to "no negotiate " (
putting the etherchannel in "on mode") this type of traffic isn't need and
you don't have problems
Anyone can correct if i'm wrong?
Regards
Juan Faure Ferrer
email: jfaure@sztele.com
Lmnea de Negocio de Telematica y CC
Ingeniero de Integracisn de Redes y Sistemas
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"Mujica, Raul
- (Per)" Para: "'ccielab@groupstudy.com'"
<raul.mujica@a <ccielab@groupstudy.com>
ttla.com> cc:
Enviado por: Asunto: Etherchannel one way-link
question
nobody@groupst
udy.com
29/11/03 07:42
Por favor,
responda a
"Mujica, Raul
- (Per)"
Hi:
I have a pair of questions:
1.- Is UDLD the only choice to manage one-way links ?
2.- When I configure UDLP and PAGP (mode desirable on both sides) on the
interfaces to form an etherchanel, this is flapping, has someone
experienced this ?
interface range FastEthernet0/23-24
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 10,20,30
switchport mode trunk
no ip address
udld enable
channel-group 1 mode desirable
But when I use "mode on" and UDLD, the port-group goes up without problem
and get stable.
interface range FastEthernet0/23-24
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 10,20,30
switchport mode trunk
no ip address
udld enable
channel-group 1 mode on
Regards
Raul
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