MC-LAG: IRB MAC synchronization in multichassis link aggregation for aggregated Ethernet

Supported devices operating in multichassis link aggregation (MC-LAG) with aggregated Ethernet configurations support integrated routing and bridging (IRB) MAC address synchronization. In earlier releases, VRRP was the only solution for sharing the same MAC across MC-LAG chassis for IRB interfaces. This feature is supported on 32-bit interfaces only and interoperates with earlier MPC/MIC releases.