February 10, 2012

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Configuring Etherchannel on Cisco ASA 8.4

February 17, 2011 By 1 Comment

With the recent release of Cisco ASA 8.4 code a new feature has emerged. Yes, Etherchannel. I’ll spare you the gory details of how etherchannel works. Rather lets just get right into how you set it up.

Lets begin with the switch configuration:

Rack1SW1# sh run int f0/1
Building configuration...



Current configuration : 109 bytes
!
interface FastEthernet0/1
 switchport access vlan 146
 switchport mode access
 channel-group 1 mode active
 spanning-tree portfast
end



Rack1SW1# sh run int f0/2
Building configuration...
 [Read more...]

Filed Under: CCIE Security, Firewalls Tagged With: , ,

5 ways to make sure Etherchannels work.

May 4, 2009 By Leave a Comment

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!

Filed Under: BCMSN, CCNP Study Tagged With: , ,