Which option is the cause of the issue?

Refer to the exhibit.

An access point joins the secondary wireless controller but not the primary wireless controller. Another access point has joined the controller and is working fine. The network engineer can ping the wireless controller and the access point from the core switch.

Which option is the cause of the issue?
A . The trunk ports are missing a spanning tree configuration.
B . The EtherChannel configuration is incorrect.
C . The port channels configured with the wrong negotiation protocol.
D . The trunk port configuration is incorrect.

View Answer

Answer: B