This feature adds support for BGP UCMP in the multi-agent routing protocol model. Unequal Cost Multi Path (UCMP) for BGP is a mechanism for forwarding traffic from a device for an ECMP route in the ratio of the weights with which the next hops of that route are programmed in the FIB. This is done for BGP by disseminating BGP link bandwidth extended community attribute information with BGP paths such that the receiver device of all such paths for a route programs next hops for that route in the FIB in the ratio of the received link bandwidth values.

The FIB contains mappings between a prefix (identifying a destination network) and its associated Forwarding Equivalence Class (FEC), with the FEC containing one or more resolved Vias defining how traffic should be forwarded towards that destination network.

This feature allows configuring backup entries for static MPLS LFIB routes via EOS SDK RPC to be activated if its corresponding primary entries are unable to forward traffic due to next hops being unresolved or its corresponding interface being down. Any backup entries will not be activated to forward traffic until all primary entries are unviable. Thereby, backup entries configured for the Static MPLS routes are a mechanism to achieve fast failover when the primary path fails.

This feature adds support for Static Route UCMP local forwarding in the multi-agent routing protocol model. Unequal Cost Multi Path (UCMP) for Static Route is a mechanism for forwarding traffic from a device for an ECMP route in the ratio of the weights with which the next hops of that route are programmed in the FIB.

This feature extends link bandwidth extended community deletion mechanism, which previously always required

Unequal cost multi path (UCMP) for BGP is a mechanism for forwarding ECMP route traffic using weights, with which the

Unequal Cost Multi Path (UCMP) is a mechanism for forwarding traffic for an ECMP route by using a ratio of weights

BGP 4.22.1F UCMP