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Which two features are used to allow a nondisruptive upgrade for the ISSU process? (Choose two.)

A.

connectivity management processor

Answers
A.

connectivity management processor

B.

nonstop forwarding

Answers
B.

nonstop forwarding

C.

graceful restart

Answers
C.

graceful restart

D.

stateful switchover

Answers
D.

stateful switchover

E.

advanced services license

Answers
E.

advanced services license

Suggested answer: B, D

Explanation:

The In-Service Software Upgrade (ISSU) process is designed to upgrade the system software with minimal disruption to the network. Nonstop forwarding (NSF) and stateful switchover (SSO) are two features that work together to maintain packet forwarding and switch state information during the ISSU process.NSF allows the router to continue forwarding packets even when the route processor is failing over, while SSO synchronizes state information between redundant route processors to ensure a seamless transition during a failover1.

asked 10/10/2024
John Bocachica
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