A VNIC information exchange works as follows:
The system sends an association request (ASSOC) to the external switch by specifying the VNIC and its associated profile. The external switch responds to the association request with a success or failure response. The system can subsequently send a disassociation request (DEASSOC) to the external switch, which removes the association for a VNIC. For information about how to display and obtain the state of the request for a VNIC, see Displaying VDP and ECP State and Statistics.
When you create a VNIC, the VDP exchange occurs as follows:
A VDP association (ASSOC) request TLV unit containing the information about the VNIC is sent to the external switch by the system.
The external switch receives the VDP (ASSOC) TLV unit and obtains the VNIC information by using the VSI Type ID, VSI Version, and VSI Manager ID.
The external switch applies the property configuration for the VNIC.
The external switch sends a VDP association (ASSOC) response TLV unit to the system stating that the external switch has configured properties for the VNIC.
When you delete a VNIC, VDP exchange occurs as follows:
A VDP disassociation (DEASSOC) request TLV unit containing the VSI ID is sent to the external switch by the system.
The external switch receives the VDP (DEASSOC) TLV unit and obtains the VSI ID of the VSI that is deleted.
The external switch removes the configuration for the deleted VNIC.
The external switch sends a VDP disassociation (DEASSOC) response TLV unit to the system.