To configure an IMM-only node in the VC, use the command config>system>vc-stack-node slot-number mac-address mac-address [create].
An IMM-only node in a VC is identified by its slot-number and its MAC address. The slot number assigned to the node can be an arbitrary number from 1 to 8. It is used in service provisioning to identify ports on a VC member node, and on service objects on those ports. The port on a VC member node is identified using the format slot-id/1/port-id;sap-id. For example, port 20 on the front panel of a VC member node in slot 4 with a SAP ID of 300 is identified as 4/1/20:300.
Slot numbers are unique to each VC, which are identified by their vc-stack-name, and can be reused across different VCs. Software ensures the uniqueness of the slot number in each VC by raising an error if two nodes in the same VC are assigned the same slot number.
When an IMM-only node boots up, it uses the MAC address and slot number received in the VC discovery messages sent by the CPM node to discover VC configuration information. The MAC address used for VC configuration is the chassis MAC address printed on the label of the node. If it does not match the MAC address retrieved from the EEPROM, the node will not be able use the VC configuration information. For CPM-IMM nodes, this will result in boot failure. The IMM-only nodes will wait indefinitely for a VC discovery message with the correct MAC address from the CPM-IMM node, or until the operator removes the node from the VC by disconnecting its stacking ports.