MLAG-LACP in 15.3 connecting to another XOS switch

[EtherNation_Use]

Create Date: Mar 15 2013 9:49PM

I'm having a tough time getting LACP working between a pair of X670s running 15.3, configured with an MLAG and an X440 with shared ports. I can get the MLAG working if I leave LACP off of the X440 LAG config. This leaves it with a static LAG. When I configure the ports with the LACP option on the X440, when I look at the vlan on it with "sh vlan x" the vlan isn't marked with the * to indicate it is active, eventhough the port is active. I have tried including algorithyms with LACP, but get similar results. I have also tried manually setting the LACP MAC address on the MLAG peers, but I get the same results.

Is there something simple I am missing?

My current configuration is very similar to that in http://ethernation.net/Default.aspx?t....

Thanks. (from Brad_Morgan)

[EtherNation_Use]

Create Date: Mar 18 2013 12:55PM

Good to hear Bmorgan. Good luck and let us know if we can be of any more help.

P (from Paul_Russo)

[EtherNation_Use]

Create Date: Mar 17 2013 1:11AM

Thanks Prusso, that did it. I enabled sharing with the same L3_L4 algorithym and LACP configuration on each of the MLAG ports and on the connected switches' shared ports. It came right up.

Thanks again. (from Brad_Morgan)

[EtherNation_Use]

Create Date: Mar 16 2013 11:03PM

Hey Bmorgan

Here are the guidelines for using LACP with MLAG.

•Sharing has to be enabled on MLAG port even if the port is a single port.•LACP configuration for MLAG ports (like system priority, LACP timeout, activity mode etc.) should be the same on all the MLAG peer switches.•It is recommended that the server node has a lower System Aggregation Priority than the MLAG peers so that the server chooses which ports can be aggregated. •Port Aggregation Priority can be configured in such a way that the number of ports aggregated are balanced between the MLAG peers.

Let me know if that helps. Note number one sharing has to be enabled even if it is a single port

P (from Paul_Russo)