What happens to the switch operation when a supervisor module in a Cisco Nexus switch is replaced by two supervisor modules?

Question

Options

• AThe switch continues to operate without any interruption.
• BAll modules in the switch are reset due to a stateless switchover.
• COnly the affected line cards reset.
• DThe switch shuts down completely.

• A
  15% (5)
• B
  76% (26)
• C
  6% (2)
• D
  3% (1)

Explanation

In Cisco Nexus switches, when transitioning from a single supervisor module to a dual supervisor configuration, the behavior depends on the redundancy mode configured. Stateful Switchover (SSO): In configurations supporting SSO, the active and standby supervisors synchronize their state and configuration, allowing for seamless failover without resetting other modules. Stateless Switchover (Warm Standby): In certain modes, such as the ACI-mode on Cisco Nexus 9508 switches, the standby supervisor does not maintain synchronized state information with the active supervisor. In this scenario, if a switchover occurs (e.g., due to the replacement of the active supervisor), all modules in the switch are reset because the switchover is stateless. Therefore, when a supervisor module is replaced in a configuration that does not support stateful switchover, all modules in the switch are reset due to the stateless nature of the switchover.

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