[c-nsp] General switching question regarding load balancing host

[Gert Doering]

Hi,

On Fri, Sep 17, 2010 at 11:52:41AM -0400, Jay Nakamura wrote:
> Some hosts/OS can do load balancing between NICs.  If a host has two
> NICs connected to two switches,(the two switches are connected
> together) and load balancing between them, switch will see the same
> source MAC from two ports.  

Don't do this.

If the ports go to two different switches (that cannot do cross-chassis
etherchannel), use active/passive bundling, not load-sharing.

gert
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Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de
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