You have recently implemented a graceful Routing-Engine switchover (GRES) and want to further reduce down time if a Routing Engine (RE) failure occurs.
Which two features can be configured on this device to reduce its downtime in this situation? (Choose two)
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A. B. C. D.BD
In a graceful Routing-Engine switchover (GRES), the new Routing Engine (RE) takes over the operations of the previous one in case of a failure, while minimizing any downtime. However, there are additional features that can be configured to further reduce downtime in case of a Routing Engine failure.
The two features that can be configured on this device to reduce its downtime in this situation are:
Non-Stop Routing (NSR): NSR is a feature that enables the forwarding of traffic to continue uninterrupted during a Routing Engine switchover. NSR allows the new Routing Engine to take over the operations of the previous one without disrupting the forwarding of traffic. NSR is supported on a number of Juniper Networks platforms and protocols.
Bidirectional Forwarding Detection (BFD): BFD is a protocol that is used to detect faults in the forwarding path between two network devices. BFD can be used to quickly detect a failure in the forwarding path between two devices, which can trigger the Routing Engine switchover process. By using BFD, the time it takes to detect a failure and initiate a switchover can be reduced, which can help to further minimize downtime.
VRRP (Virtual Router Redundancy Protocol) and GR (Graceful Restart) are both features that provide redundancy and help to minimize downtime, but they do not directly relate to reducing downtime during a Routing Engine switchover. VRRP is used to provide redundancy for the default gateway, while GR is used to enable a network device to continue forwarding traffic during a restart or reload of the Routing Engine.