JNCIE-SEC Practice Questions - Juniper Networks Certified Expert, Security (JNCIE-SEC) Exam

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You are configuring graceful restart (GR) on a chassis cluster SRX to minimize routing disruption during a Routing Engine (RE) failover. Which statement correctly describes the behavior of graceful restart in a chassis cluster context?

Graceful restart is not supported on SRX chassis clusters because the backup RE does not synchronize routing tables Graceful restart allows the forwarding plane to continue forwarding packets using stale routes during RE failover; the new primary RE signals its GR capability to neighbors using the Restart flag in BGP OPEN or OSPF Hello messages Graceful restart requires configuring 'set routing-options graceful-restart' only on the primary node; the backup RE inherits the setting automatically through RTG synchronization Graceful restart in chassis cluster prevents any routing table recalculation for 300 seconds regardless of whether neighbors support GR

Correct Answer:

Graceful restart allows the forwarding plane to continue forwarding packets using stale routes during RE failover; the new primary RE signals its GR capability to neighbors using the Restart flag in BGP OPEN or OSPF Hello messages

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