Setting the Maximum Number of Equal-Cost Routes

Routes of the same routing protocol with the same destination and cost are called equal-cost routes, and traffic can be load-balanced among these routes.

Context

Perform the following steps on the router that runs OSPFv3:

Procedure

Run system-view
The system view is displayed.
Run ospfv3 [ process-id ]
The OSPFv3 view is displayed.
Run maximum load-balancing number
The maximum number of equal-cost routes is set.

If the number of equal-cost routes is greater than number specified in the maximum load-balancing command, routes are selected for load balancing based on the following criteria:
1. Route priority: Routes with smaller priority values are selected for load balancing. For details about route priority configuration, see 4.
2. Interface index: If routes have the same priority, those with greater interface index values are selected for load balancing.
3. Next hop IP address: If routes have the same priority and interface index, those with larger IP addresses are selected for load balancing.
(Optional) Run nexthop neighbor-id { interface-name | interfaceType interfaceNum } weight value
The preference for equal-cost routes is set.

OSPFv3 selects a next hop from these equal-cost routes according to the weight. The smaller the weight is, the higher the route preference is.
Run commit
The configuration is committed.