A customer has an MCM group consisting of four MX7000 chassis. They need to take the lead chassis down to perform maintenance. How can the customer ensure that another chassis takes over the lead…

Question

Options

• AThe MCM group will elect a new lead chassis.
• BPromote the backup lead chassis as the new lead chassis.
• CThe backup chassis will take the lead automatically.
• DPromote the lead chassis to a passive chassis.

• A
  7% (2)
• B
  79% (23)
• C
  10% (3)
• D
  3% (1)

Explanation

Option B is correct because in a Dell EMC MCM (Multi-Chassis Management) group, lead role transfer is not automatic - an administrator must manually promote the backup lead chassis before taking the lead chassis offline for maintenance. This deliberate action ensures a controlled, predictable failover rather than leaving the group in an undefined state.

Option A is wrong because MCM groups do not use an election algorithm; there is no peer negotiation among member chassis to vote in a new lead. Option C is wrong for the same reason - the backup lead does not assume control automatically just because the lead goes offline; manual intervention is required. Option D is wrong because it reverses the logic: you promote the backup, not the lead - the lead chassis doesn't get "promoted to passive," it simply gets taken down after the backup has been promoted.

Memory tip: Think "promote the backup before you unplug." The backup must be elevated first, so the group always has an active lead - never let the lead go dark without crowning a successor manually.

No community discussion yet for this question.