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.

Note

Important considerations:

• When using MLAG, you must run LACP on the CB MLAG cascade ports.
• Jumbo frame should be enabled on the ISC ports.
• With an MLAG/VPEX topology, captive portal web-redirect does not work with ONEPolicy default resource profile. Use the profile-modifier feature to free up ACL resources from any specific policy profile (see the ExtremeXOS User Guide for Platform Rule Allocation).

Redundant Controlling Bridge Architecture with MLAG over Cascaded Ports

With redundant CBs 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. Before entering orchestration mode, ensure that any configuration parameters (connecting ports for the BPEs, VLAN names, numbers etc.) are the same for both CBs.