07-11-2006 08:10 AM - edited 03-03-2019 04:00 AM
I was told that it is a good idea to run etherchannel on my trunk links so if one interface goes down it will still work, is this true and how would i configure it ?
07-11-2006 11:44 AM
Dont know what switch you are using but try this document it may help you
http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/1218ea1/3550scg/swethchl.pdf
07-12-2006 03:26 AM
the switches are cisco 3550's and 2950's
07-12-2006 03:35 AM
Hi!
It is indeed a good idea to do that. The resiliency is better. It is upto you whether to configure a Layer 2 or a Layer 3 etherchannel. Although in your case I believe a Layer 2 etherchannel should suffice.
For configuring etherchannel, you need to enter the following commands:
- enable
- configure terminal
- interface 'type' 'no'
- switchport mode access trunk
- switchport access vlan 'no'|
- channel-group 'channel-group no' mode desirable
You need to enter these commands for every interface you want to be as part of etherchannel.
For more, please refer the following link -->
Hope that helps.
Regards,
AbhisheK
Please rate all posts!
07-12-2006 04:36 AM
hi, thanks for the reply, firstly would I put all my uplinks in the same group, why do we have groups ? also If I had to fiber links between my comms room, could I utilize both of these rather than 1 being blocked via spanning tree ?
07-12-2006 05:04 AM
hi carl,
you can put all the uplink in the same group... here when you creat the group... then you put desire interfaces in to that group... and all group members should have the same characteristics like speed, duplex...vlan...and yes you can utilise the both the fibre link for data transfer...
so first creat one group for the ether-channel
then make the ports member of the group...
hope this will help you to understand
rate this post if it helps
regards
Devang
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