Which two statements describe nonstop routing? (Choose two.)
A.
RPD is running on the backup RE.
B.
Graceful restart is required for nonstop routing to function.
C.
Peer nodes are not alerted of RE mastership changes.
D.
COSD is running on the backup RE.
I have the same idea. AC
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Wrong! A,B are correct.
Refer to https://www.juniper.net/documentation/en_US/junos/topics/concept/nsr-overview.html
1. Nonstop active routing (NSR) uses the same infrastructure as graceful Routing Engine switchover (GRES) to preserve interface and kernel information. However, NSR also saves routing protocol information by running the routing protocol process (rpd) on the backup Routing Engine.
2. Note: To use NSR, you must first enable GRES on your routing (or switching) platform.
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Ooops. I’m confused with GRES and GR. A,C are correct.
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That´s right.
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