5 ways to make sure Etherchannels work.

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Channeling is not that hard to do, its just temperamental. Here are 5 tips to ensure that your EtherChannel configuration goes smoothly:

1. Make them look the same!!! I’m talking about the interfaces here. Check them next to each other. I’ve seen too many broken configurations where they just didn’t match up.
2. Set the same speed and duplex. Don’t let the IOS decide for you. Hard code it so you know it’s done.
3. All ports in an EtherChannel DO NOT have to be next to each other or even on the same module.
4. SPAN ports can’t be in an EtherChannel
5. Sometimes you need to shut down both sides and let them negotiate again.

I know there are other items that I could bring out on the list. These are just some of the ones I remember off hand. How do you make sure the EtherChannel works? Add a comment on this post to tell others about it.

Find more information on Cisco EtherChannel technologies on the Cisco Support Wiki.

You can also download the Kindle version of the Quick Reference sheet. If you do, make sure you get the kindle app for the iphone!

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