From: Joe Martin (jmartin@capitalpremium.net)
Date: Thu Aug 07 2003 - 17:13:15 GMT-3
Jeongwoo,
That would work just fine, but you are defeating the purpose of configuring
the trunk commands on the port-channel intf. If you configure the trunk
commands on the port-ch intf, then you can just issue the channel-group
command on another interface to add it to the etherchannel and it will
inherit the trunk commands.
Basically, if you cinfigure the trunk commands on the port-channel interface
you will only have to configure them once. No matter how many interfaces
you add or remove from the etherchannel.
HTH,
Joe Martin
-----Original Message-----
From: Jeongwoo Park [mailto:jpark@wams.com]
Sent: August 07, 2003 2:00 PM
To: 'Joe Martin'; Peng Zheng; ccielab@groupstudy.com
Subject: RE: Etherchannel
Would it make any difference if you did this way instead?
int fa0/23
channel-group 1 mode des
swit trunk encap dot1q
swit mode trunk
!
int fa0/24
channel-group 1 mode des
swit trunk encap dot1q
swit mode trunk
!
int por1
-----Original Message-----
From: Joe Martin [mailto:jmartin@capitalpremium.net]
Sent: Thursday, August 07, 2003 10:35 AM
To: Peng Zheng; ccielab@groupstudy.com
Subject: RE: Etherchannel
Peng,
You are correct. It is not necessary to manually create the int
port-channel 1. It is created automatically when you enter the
channel-group command on the physical interface. However, typically
etherchannels are trunk interfaces and all the physical interfaces in
etherchannel must use the same trunk config. Typically I just enter the
channel-group command on each of the physical interfaces and then I use the
port-channel interface to configure the trunk; all the physical interfaces
in the channel group will inherit the config of the port-channel interface.
Issue the following commands:
int fa0/23
channel-group 1 mode des
int fa0/24
channel-group 1 mode des
int por1
swit trunk encap dot1q
swit mode trunk
now do a show run and you will see that the 2 physical interfaces inherited
the trunk commands from the port-channel interface. This is also nice if
you add another interface to the ehterchannel later.
So, no it is not required, but it does ease administration.
HTH,
Joe Martin
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Peng Zheng
Sent: August 07, 2003 10:40 AM
To: ccielab@groupstudy.com
Subject: Etherchannel
When I configure layer 2 Etherchannel on 3550, do I
need to configure
interface Port-channel1?
I think it's not necesary, but the solution for 6colab
has it.
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