Which feature Is supported with an In-Service Software Upgrade on a Cisco Nexus 9000 Series Switch?

The correct answer is B. nondisruptive upgrades via nonstop forwarding. ISSU (In-Service Software Upgrade) on the Cisco Nexus 9000 supports nondisruptive upgrades via Nonstop Forwarding (NSF). NSF allows the data plane to continue forwarding packets while the control plane restarts during the upgrade, maintaining traffic flow without dropping…

Network

Question

Options

Aconfiguration changes during an upgrade
Bnondisruptive upgrades via nonstop forwarding
Czero downtime downgrades via dual supervisor modules
Dupgrades to Individual modules and line cards

How the community answered

(59 responses)

A
2% (1)
B
90% (53)
C
3% (2)
D
5% (3)

Explanation

ISSU (In-Service Software Upgrade) on the Cisco Nexus 9000 supports nondisruptive upgrades via Nonstop Forwarding (NSF). NSF allows the data plane to continue forwarding packets while the control plane restarts during the upgrade, maintaining traffic flow without dropping sessions. Option A is incorrect because configuration changes are not supported during an ISSU - the switch must be in a stable state. Option C is incorrect because zero-downtime downgrades via dual supervisors describes graceful insertion and removal (GIR), not ISSU. Option D is incorrect because ISSU upgrades the entire NX-OS image system-wide, not individual modules or line cards independently.

Topics

#Cisco Nexus 9000#In-Service Software Upgrade (ISSU)#Nonstop Forwarding (NSF)#High Availability

Community Discussion

No community discussion yet for this question.

Full 350-601 Practice