Designing Cisco Enterprise Wireless Networks (ENWLSD) — Question 149

A customer currently is migrating the old wireless infrastructure to a new Cisco IOS XE-based solution and wants a mobility group configured between a Cisco AireOS WLC and an IOS XE WLC. During the migration phase from AireOS to IOS XE, the Layer 3 roaming between the WLCs must be seamless. Which action meets the requirements?

Answer options

• A. For the same SSIDs, use the same VLAN IDs and subnets on both WLCs.
• B. For different SSIDs, use different VLAN IDs and subnets on both WLCs.
• C. For different SSIDs, use the same VLAN IDs and subnets on both WLCs.
• D. For the same SSIDs, use different VLAN IDs and subnets on both WLCs.

Correct answer: D

Explanation

The correct answer is D because using different VLAN IDs and subnets for the same SSIDs allows for seamless Layer 3 roaming between the WLCs during migration. Options A and C do not meet the requirement for seamless roaming as they suggest using the same VLAN IDs and subnets, which can create conflicts. Option B is irrelevant to the requirement since it addresses different SSIDs instead of the same SSIDs.