JN0-649: Enterprise Routing and Switching, Professional (JNCIP-ENT)Demo

By Juniper · Question Mode

QuestionQ19

BGP

Your enterprise network relies on routing instances to support multitenancy. Your Junos devices use BGP to peer with multiple BGP devices. You must ensure that load balancing is achieved within the routing instance.

Which two statements would accomplish this task?

Choose two
  • A Configure the multipath option at the [edit protocols bgp group <group-name> neighbor] hierarchy.
  • B Configure the multipath option at the [edit protocols bgp group] hierarchy.
  • C Configure a load-balance per-packet policy and apply it at the [edit routing-options forwarding-table] hierarchy.
  • D Configure the multipath option at the [edit routing-instances <instance-name> routing-options] hierarchy.
Explanation

To achieve BGP load balancing within a specific routing instance in Junos, the multipath statement must be configured at the [edit routing-instances <instance-name> routing-options] hierarchy so that instance's routing table installs multiple equal-cost active paths, and a load-balancing policy (a policy with "then load-balance per-packet") must be applied at the forwarding-table export hierarchy so the forwarding table actually distributes traffic across those installed paths, since Junos otherwise programs only one active path into the forwarding table even when multipath is enabled in the RIB. There is no multipath statement configurable under the protocols bgp group or neighbor hierarchy.

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