Exam 300-425 topic 1 question 78 discussion

Actual exam question from Cisco's 300-425

Question #: 78
Topic #: 1

An enterprise is using two wireless controllers to support the wireless network. The data center is located in the head office. Each controller has a corporate
WLAN configured with the name Copr-NET392267230WLC-1 and Corp-NET68371638WLC-2. The APs are installed using a round-robin approach to load balance the traffic. What should be changed on the cofiguration to optimize roaming?

A. Use the same WLAN name for the corporate network on both controllers.
B. Move all access points to one controller and use the other as N+1 HA.
C. Move the controllers to an external data center with higher internet speeds.
D. Place the access points per floor on the same controller.

Show Suggested Answer

Suggested Answer: A 🗳️

by hypergammaspacemonkey at Aug. 26, 2021, 11:43 a.m.

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maksim_churyukin

Highly Voted 1 year, 1 month ago

"For a wireless client to seamlessly roam between mobility group members (WLCs), a given WLAN SSID and security configuration must be consistent across all WLCs comprising the mobility group" Enterprise Mobility 8.5 Design Guide, Ch2, p2-57 So the WLANs' names should be the same, the answer is A

upvoted 13 times

Liselot

1 year ago

I agree. They are talking about WLAN Names (SSIDs) here. Not the Mobility Group Name

upvoted 4 times

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ulfjvw

Highly Voted 8 months, 1 week ago

Selected Answer: A

roaming requires same SSID

upvoted 5 times

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Farhad123

Most Recent 7 months, 2 weeks ago

A is the correct one. To optimize roaming: Using a shared SSID on both controllers allows devices to perceive the network as a single entity and roam seamlessly between APs. Placing APs per floor on one controller only benefits that floor and does not resolve the issue of differing SSIDs between controllers. Moving all APs to one controller and using the other as N+1 HA removes load balancing and does not address the SSID mismatch.

upvoted 1 times

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ASV2020

1 year, 3 months ago

Answer: B

upvoted 1 times

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hypergammaspacemonkey

1 year, 5 months ago

I'd suggest A because of inter-floor roaming and bleed-through.

upvoted 2 times

Coffee313

1 year, 5 months ago

Seems like the WLCs are not in the same mobility domain so if the WLANs will have the same names - roaming will be slow. I think the best option os to configure HA SSO, so my answer is B.

upvoted 2 times

ulfjvw

8 months, 1 week ago

n+1 is not SSO...

upvoted 1 times

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