LACP across two switches

[pykim]

Is it possible yet to etherchannel (using LACP) from a server using Broadcom NICs (with the latest drivers and software) to two Cisco switches?

I heard that etherchannel has evolved but not sure to what extent. Thanks.

[Georg Pauwen]

Hello,

I assume you are referring to multichassis LACP Etherchannels, that is, each NIC going into a different switch, and both links forming a channel ?

Regards,

GP

[pykim]

That is correct. Is it possible yet? Thanks.

[Georg Pauwen]

Hello,

TMBK, the only way to configure an Etherchannel (wether PAgP or LACP doesn´t matter) is across a stack, because apparently that is the only way the channel group interface knows that it belongs to ports on different physical switches...

I will ask around if that has changed and let you know.

Regards,

GP

[lordi]

Does that mean that it is possible to configure an etherchannel between a 7206 router and two catalyst 3550 if both switches are linked together with a gigastack gbic ?

Thanks

[Joseph W. Doherty]

Possibly.  It also might depend on what IOS is installed on both the router and switch stack and what specific hardware comprises the router.

It's also possible the 3550 stack and/or the 7206 won't support LACP, but might support other (older) Etherchannel options.

[GIANRICO FICHERA]

You can see if your devices support mLACP