Re: PAgP Learn Method and Port-channel Loadbalancing

Dstn-mac- add based LB means that switch will calculate the hash based on
destination mac-add and select he actual port accordning to the hash result
and # of ports invloved int the ether-channel.
Once a ether-channel is formed then then selection of actual port depends
upon the Hash result and # of ports in the channel.

Any correction is welcomed.

On Tue, Nov 10, 2009 at 3:09 PM, Miroslav Kosut <miroslav.kosut_at_me.com>wrote:

> Dear group,
>
> a quick question to confirm my understanding. Suppose I configure the
> following on the same etherchannel:
>
> 1. PAgP learning method to be a "physical-port learning"
> 2. Port-channel loadbalancing to be based on a "destination mac address"
>
> Then, am I right when I am saying that load-balancing method is ignored
> when a destination mac address is already learned (on a physical-port) ?
>
> My understanding:
> Since the mac is already learned on a physical-port, there is no need to
> calculate the outgoing member interface (load-balancing).
> Of course, if the mac address hasn't been learned, frames would be
> unicast-flooded. Then, load balancing IS performed and the outgoing
> interface is chosen.
>
> Regards,
> Miroslav Kosut
>
>
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Received on Tue Nov 10 2009 - 15:37:20 ART