Hello All,
I have scenario that can utilise BGP multipath to load balance traffic for certain prefix. network diagram attached.
The BGP multipath setup installed both routes into the routing table and the same was exported to forwading table, checking the destination on the forwading table, it has both next-hops. for some reasons, traffic is not load balanced. the usage graph shows one link used. traceroutes to individual IPs in the prefix take one path only. traceroutes from the internet also keep taking one link.
under forwading options hash-key, nothing is specified at the moment. we just relying on default hashing algorithms. changing default hash-keys needs FPC reboot. if it gets to that we will plan downtime and reboot but i wanted to know if there is anything else i can test or check as why actual load balance is not happening.
the two next-hops are on two logical interfaces under the same LAG ae0. could this be an issue ?
Model: mx960
Junos: 15.1R6.7