Ano-Tech Computers
Enter keyword:

Cisco: how to set up switch port bundling for redundancy
Problem:
CCO documentation can be quite confusing on this point, so here's how we did it on a pair of older 2900 series switches. Note that this solution gives redundancy but not added link capacity. If you have alternate solutions to offer, please email them to floyd@atc.no
 
Solution:
Start with all of the bundled ports in "shutdown" mode, plug in all the cables, and then configure one port at the time at both ends:

interface FastEthernet0/2
port group 1
switchport trunk encapsulation isl
switchport mode trunk
!
interface FastEthernet0/3
port group 1
switchport trunk encapsulation isl
switchport mode trunk
!
interface FastEthernet0/4
port group 1
switchport trunk encapsulation isl
switchport mode trunk
!


 
Discuss this solution
Did this article solve your problem? Yes No Did not apply

This is free technical advice without any warranties. Use at your own risk. Solutions offered may not apply to your particular problem at all. Opinions and views expressed in the articles are the authors' personal and may not necessarily reflect or coincide with those of Ano-Tech Computers. We take no responsibility if anything bad happens from following any of the intructions given. If you don't understand and accept this, please contact us for personal assistance instead.
To read our full disclaimer, go here.

We welcome anyone who is willing to contribute to this public knowledge base, contact siteadmin@atc.no if you have information you would like to share. The idea is not to replace the commercial support sites, but to publish those hard-to-find solutions you've found yourself looking for over and over again.

Show all articles