Redundant Controlling Bridges

For added resiliency and redundancy, the VPEX architecture allows you to form an extended bridge using multiple controlling bridges (CBs).

You can use MLAGs to form an extended bridge with two CBs, also serving as MLAG peers, connected to dual-homed BPE devices using MLAG cascaded ports (see Redundant Controlling Bridge Architecture with MLAG over Cascaded Ports).

Note

When using MLAG, you must run LACP on the CB MLAG cascade ports.

Redundant Controlling Bridge Architecture with MLAG over Cascaded Ports

With redundant controlling bridges attached to each BPE, the associated extended port configuration must be identical on each controlling bridge. To reduce the configuration complexity and to minimize the risk of inconsistency, you can use orchestration mode so that any configuration commands are now checkpointed to the MLAG peer switch.

After entering this orchestration mode, like the existing virtual-router mode, the configuration prompt changes indicating that commands issued are within this context:

(orchestration bottom) X670G2-48x-4q.4 #

To enter orchestration mode, use the following command:

start orchestration mlag peer_name

To exit orchestration mode, use the following command:

stop {orchestration}

Published March 2020prev | next

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