port-channel on 6506

thierry.gervreau · ‎06-06-2010

I have the following question:

how is distributed flows in a port-channel default?

For example if we have a port_channel with 2 interfaces 1 Gb

when a stream with its MAC address is what he always goes through the same link? or one time the stream use the first interface and the next time the second interface ?

Thanks you

andrew.prince · ‎06-06-2010

Read the below link:-

http://www.cisco.com/en/US/tech/tk389/tk213/technologies_tech_note09186a0080094714.shtml

HTH>

thierry.gervreau · ‎06-06-2010

ok interesting document ,

but if a computer A ( MAC AAA.AAA.AAA ) "talk" with an other computer B ( MAC BBB.BBB.BBB ) , Do you know if the stream use always the same interface in the port-channel ?

Or when the computer A "talk" with the computer B in a new session , the stream can use an other interface int the port-channel ?

Reza Sharifi · ‎06-06-2010

Hi Thierry,

The default load balancing algorithm for the 6500 is sce-dst-ip. So a given connection from one host will use one of the links in the Etherchannel and the next host with a different IP will take the other port in the Etherchannel.

Here is more info:

http://www.cisco.com/en/US/docs/ios/interface/command/reference/ir_o1.html#wp1013233

HTH

Reza