JNCIS-SP: Juniper Networks Certified Specialist – Service Provider Routing (2023) — Question 62

You want to enable a routing platform with redundant REs to switch from a primary RE to a backup RE without alerting peer nodes.

Which two technologies would you use to satisfy this requirement? (Choose two.)

Answer options

Correct answer: A, C

Explanation

NSR (Non-Stop Routing) allows for the continuous operation of routing protocols during a failover, while GRES (Graceful Routing Engine Switchover) facilitates the switchover process between primary and backup REs without dropping connections. ISSU (In-Service Software Upgrade) and VRRP (Virtual Router Redundancy Protocol) do not specifically address the requirement of seamless transitions between REs without alerts to peer nodes.