• Author : Hemanth Murthy

 
 

MLAG Unicast Convergence

Feature Update: Please note that this feature has been updated and enhanced in EOS-4.24.1F On an MLAG chassis we sync the MAC addresses learnt on individual peers and make sure we use the appropriate interface to map the MAC addresses. In case of unexpected events like reloading of one of the peers in the MLAG chassis or flapping of one or more MLAG interfaces, we may observe some loss of traffic. If an MLAG flaps on one peer, then we may have to remap the MAC addresses learned, such that the reachability is via the other peer in the MLAG...
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Routing with an MLAG peer’s system MAC

In an MLAG setup, routing on a switch (MLAG peer) is possible using its own bridge/system MAC, VARP MAC or VRRP MAC. When a peer receives an IP packet with destination MAC set to one of the aforementioned MACs, the packet gets routed if the hardware has enough information to route the packet. Before EOS 4.15.0F, the following behavior was observed if the destination MAC is peer’s bridge MAC – the packet is L2 bridged on the peer-link and the routing takes place on the peer. This behavior to use the peer-link to bridge the L3 traffic to the peer is...
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