Loadbalance traffic between links in port channel

Unanswered Question
Jul 29th, 2008

I need to do round robin Loadbalance traffic between two links (Gigabit Ethernet) in port channel

I have this problem too.
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Marwan ALshawi Wed, 07/30/2008 - 02:34

with etherchannel once u created the port channel and applied to both links it will loadbalance

u could make it layer three link or leave it layer two dosent matter

andrew.butterworth Wed, 07/30/2008 - 02:48

I assume by 'round-robin' you mean the 1st packet from host A to host B goes over physical link 1 and the 2nd packet will go over link 2? If that's the case then you can't achieve this. The Load-balancing is a hashing algorithm and can be based on one of:

Source MAC

Destination MAC

Source/Destination MAC

Source IP

Destination IP

Source/Destination IP

Source Layer-4 (UDP/TCP) Port number

Destination Layer-4 (UDP/TCP) Port number

Source/Destination Layer-4 (UDP/TCP) Port number

Not all platforms support all options - i.e. a 3750 doesn't support the Layer-4 load-balancing algorithm, where as a 6500 Sup720 does.




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