EIGRP LOADBALANCING WITH TWO AS

[Derek Mayabi]

Hello people

Is it possible to load balance traffic between two different automous systems(example eigrp as 100 and as 326) using variance command.

[Ajay Raj]

Communication b/w differennt EIGRP AS is not possible, so you need to do redistibution to make this happen..

Then you can do loadbalancing asusual using Variance command.....

[Giuseppe Larosa]

Hello Derek,

when using two different EIGRP processes with different EIGRP AS numbers the routes of the process with the lower AS number are preferred.

Q.    If there are two EIGRP processes that run and two equal paths are   learned, one by each EIGRP process, do both routes get installed?

A. No, only one route is installed. The router installs the route that was       learned through the EIGRP process with the lower Autonomous System (AS) number.       In Cisco IOS Software Releases earlier than 12.2(7)T, the router installed the       path with the latest timestamp received from either of the EIGRP processes. The       change in behavior is tracked by Cisco bug ID CSCdm47037.

see EIGRP FAQ

http://www.cisco.com/en/US/tech/tk365/technologies_q_and_a_item09186a008012dac4.shtml#eight

Variance does not apply to this scenario but only to different routes of the same EIGRP process / EIGRP AS number

So you may need to review your design

Hope to help

Giuseppe