Refer to the exhibit. A WLC SSO pair is set up. Which failure scenario causes a split-brain scenario?

The correct answer is C. VSL is down. The Virtual Switching Link (VSL) is essential for communication between the active and standby Wireless LAN Controllers (WLCs) in a Stateful Switch Over (SSO) setup. If the VSL goes down, it can lead to a split-brain scenario where both WLCs assume they are active, causing…

WLAN High Availability

Question

Exhibit

Options

ARP is down.
BTwo distribution ports on the active WLC are down.
CVSL is down.
DOne distribution port on the active WLC is down.

How the community answered

(23 responses)

A
13% (3)
B
4% (1)
C
57% (13)
D
26% (6)

Explanation

The Virtual Switching Link (VSL) is essential for communication between the active and standby Wireless LAN Controllers (WLCs) in a Stateful Switch Over (SSO) setup. If the VSL goes down, it can lead to a split-brain scenario where both WLCs assume they are active, causing network disruptions and inconsistencies in client handling.

Topics

#SSO split-brain#VSL#redundancy port#active WLC

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