Deal of The Day! Hurry Up, Grab the Special Discount - Save 25% - Ends In 00:00:00 Coupon code: SAVE25
Welcome to Pass4Success

- Free Preparation Discussions
Mail Us support@pass4success.com
Location US
Mob_nav_barsMENU

Juniper Exam JN0-351 Topic 9 Question 45 Discussion

Actual exam question for Juniper's JN0-351 exam
Question #: 45
Topic #: 9
[All JN0-351 Questions]

Which statement is correct about graceful Routing Engine switchover (GRES)?

Show Suggested Answer Hide Answer
Suggested Answer: C

The Graceful Routing Engine Switchover (GRES) feature in Junos OS enables a router with redundant Routing Engines to continue forwarding packets, even if one Routing Engine fails1.GRES preserves interface and kernel information, ensuring that traffic is not interrupted1.However, GRES does not preserve the control plane1.

To preserve routing during a switchover, GRES must be combined with either Graceful Restart protocol extensions or Nonstop Active Routing (NSR)1.When GRES is combined with NSR, nearly 75 percent of line rate worth of traffic per Packet Forwarding Engine remains uninterrupted during GRES1.Any updates to the primary Routing Engine are replicated to the backup Routing Engine as soon as they occur1.

Therefore, when GRES is combined with NSR, routing is preserved and the new master RE does not restart rpd1.


by Veronica at Jul 11, 2025, 11:47 AM

Limited Time Offer

25%

Off

Get Premium JN0-351 Questions as Interactive Web-Based Practice Test or PDF

Contribute your Thoughts:

Submit Cancel
Lizbeth
4 days ago
I'm going with B. GRES has a helper mode and a restarting mode, which makes sense for graceful switchover. Seems like a solid choice to me.
upvoted 0 times
...
Lucia
7 days ago
Option C seems to be the correct answer. It mentions that with NSR, routing is preserved and the new master RE doesn't restart rpd. Gotta love that high availability!
upvoted 0 times
Dyan
3 days ago
I think option C is the correct answer.
upvoted 0 times
...
...

Save Cancel