350-401 · Question #324
An engineer adds a new switch to a Cisco StackWise stack. The switch that was active before the switch was added is elected as the active switch again. Which action does the active switch take?
The correct answer is B. It checks the IOS and running configuration of the new switch and updates them if necessary to. When a new switch joins a Cisco StackWise stack and the existing active switch maintains its role, the active switch ensures the new member's IOS software and running configuration are synchronized with the stack.
Question
An engineer adds a new switch to a Cisco StackWise stack. The switch that was active before the switch was added is elected as the active switch again. Which action does the active switch take?
Options
- AIt suspends traffic forwarding until the new switch is updated with the current running
- BIt checks the IOS and running configuration of the new switch and updates them if necessary to
- CIt removes any Layer 3 configuration on the new switch to maintain normal Layer 2 functionality
- DIt clears the MAC table of the stack and relearns the attached devices.
How the community answered
(31 responses)- A19% (6)
- B61% (19)
- C13% (4)
- D6% (2)
Why each option
When a new switch joins a Cisco StackWise stack and the existing active switch maintains its role, the active switch ensures the new member's IOS software and running configuration are synchronized with the stack.
The StackWise technology is designed for minimal disruption, and the active switch typically does not suspend traffic forwarding across the entire stack when adding a new member.
The active switch in a StackWise stack is responsible for managing new members, which includes verifying the new switch's IOS software version and synchronizing its running configuration to ensure consistent operation across the entire stack.
The new switch integrates into the stack as a single logical device, sharing the full configuration including Layer 3 settings, so Layer 3 configurations are not removed.
Clearing the MAC table of the entire stack is not necessary; the active switch and existing members retain their learned MAC addresses, and the new member will learn MACs on its interfaces as traffic flows.
Concept tested: Cisco StackWise switch integration
Source: https://www.cisco.com/c/en/us/products/collateral/switches/catalyst-3750-series-switches/prod_qas0900aecd8040d7c6.html
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