Multichassis Link Aggregation (MC-LAG)
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Support for active-standby bridging and VRRP over IRB in an MC-LAG (MX304 Universal Routing Platform, MPC10E-10C-MRATE, MPC10E-15C-MRATE, and MX2K-MPC11E modular port concentrators, and MX10K-LC9600 MX10K-LC4800 line cards)—We introduce support for active-standby in a multichassis link aggregation (MC-LAG). In an MC-LAG topology, to make an active node inactive and enable a link switchover, you must configure the active-standby mode.