Weighted ECMP for VPRN services with auto-bind is enabled using the config>service>vprn>auto-bind-tunnel>weighted-ecmp command. This command is applicable if the auto-bind tunnel is configured for RSVP or SR-TE using the config>service>vprn>auto-bind-tunnel>resolution-filter>rsvp/sr-te command.
If weighted ECMP is enabled, a path is selected based on the output of the configured hashing algorithm. Packet paths are then mapped to LSPs for the service in proportion to the configured load-balancing weight of the LSP. The hash is based on the system load-balancing configuration. Weighted ECMP is disabled by default.
If an LSP in the ECMP set has no load-balancing weight configured, and the ECMP is set to a specific next hop, regular ECMP spraying is used.