[c-nsp] etherchannel load-balance when un-equal traffic

Suchy Daniel ds at nix.cz
Fri Jan 13 05:39:01 EST 2006


3550 boxes supports only src/dst MAC load balancing. In your topology 
it's normal behaviour, because each router is identified only by it's 
own (one) source MAC address. IP src/dst load balancing is not supported 
on 3550.

Tassos Chatzithomaoglou wrote:
> We have the following scenario:
> 
> 
> 5 routers
> |||||
> 3550
>   ||
>   || GEC (2x1Gbps)
>   ||
> 6500
>   |
> 1 router
> 
> 
> 1 of the 5 routers connected to the 3550 has 600 mbps traffic, while the other 4 routers have 130 
> mbps each.
> 
> In order to achieve the best load-balance (600mbps on one link, 4x130 on the other) is there a way 
> on the 3550, so we can force specific (based on source ip or mac) routers to send their traffic 
> through a specific link of the etherchannel?
> 
> Maybe there is a better way to split traffic across 2 ethernet links besides etherchannel?
> 
> Tassos
> 
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