1- Vlan 0 for wism maangement interface basically means its untagged. so management on vlan 0 means the interface is untagged. 2- All traffic from switch to wism flows thro an internal port-channel( This port-channel would be created automatically on the switch when wism module gets plugged into it.) which you can check using "sh etherchannel summary" . 3- But if management has an IP from say vlan 13, then that is the vlan to which your wism belongs . If in case that you dont hav the layer 3 interface with that vlan then you wont be able to access the interface.
Same been recorded on the config guide: Management Interface
The management interface is the default interface for in-band management of the controller and connectivity to enterprise services such as AAA servers. It is also used for communications between the controller and access points. The management interface has the only consistently “pingable” in-band interface IP address on the controller. You can access the controller’s GUI by entering the controller’s management interface IP address in Internet Explorer’s or Mozilla Firefox’s address field.
For CAPWAP, the controller requires one management interface to control all inter-controller communications and one AP-manager interface to control all controller-to-access point communications, regardless of the number of ports.
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