ECN support on MPLS networks

With this feature, you can configure ECN pairs (A and B) in the EXP header, where A denotes that the packet is ECN capable and B indicates that congestion is experienced. Defining these pairs in MPLS networks enables marking of ECN-capable traffic instead of dropping packets.

To configure the ECN pairs, use the set class-of-service mpls-ecn-map ecn-capable-exp A congestion-experienced-exp B command. You must maintain consistent ECN mappings across network nodes for seamless operation.