ECMP Load Balancing: 128-Way ECMP for BGP

You can configure a maximum of 128 equal-cost paths for external BGP peers. Previously, the maximum number supported was 64. For MPLS routes, the maximum number of equal-cost paths you can configure remains unchanged at 64. To specify 128 equal-cost paths for external BGP peers, include the maximum-ecmp 128 statement at the [edit chassis] hierarchy level. You must also configure a routing policy that exports routes from the routing table into BGP. Define a routing policy by including the policy-statement policy-name set of statements at the [edit policy-options] hierarchy level. Apply the policy to routes exported to the forwarding table by including the export policy-name statement at the [edit routing-options forwarding-table] hierarchy level.