Cisco Systems DSC9148D8G48PK9 manual Manually Assigning FlexAttach Virtual pWWN

Chapter 8 Configuring FlexAttach Virtual pWWN

Configuring FlexAttach Virtual pWWN

Troubleshooting Tips

•When the interface-listvalue is not included in the command, virtual pWWN is assigned globally.

•All the interfaces mentioned in the interface-listvalue must be in a shut state.

Manually Assigning FlexAttach Virtual pWWN

You can manually assign a WWN to the interface, without generating it through the switch. Several checks are done by the NPV core to ensure the uniqueness of virtual pWWNs in the switch. When duplicate virtual pWWNs are configured, the subsequent logins are rejected by the NPV core switch.

Prerequisites

•Some ports may be in automode, some in manual mode, and the virtual pWWNs need not be assigned.

•The port must be in a shut state when a virtual pWWN is assigned.

Restrictions

•The interface mentioned in the interface value must be in a shut state.

Detailed Steps

	To assign virtual pWWN manually, perform this task:
	Command	Purpose
Step 1
	switch# config t	Enters configuration mode.
Step 2
	switch# (config)# flex-attach virtual-pwwn	Configures the FlexAttach virtual pWWN for
	vpwwn interface interface	the interface.
	switch# (config)# flex-attach virtual-pwwn	Configures the FlexAttach virtual pWWN for
	vpwwn interface interface [vsan vsan]	the interface in the VSAN.
Step 3
	switch# (config)# flex-attach commit	Commits the configuration.

Mapping pWWN to Virtual pWWN

You can configure virtual pWWNs through real pWWNs. This process is required for NPIV hosts containing multiple pWWNs, of which only FLOGI is mapped to the virtual pWWN. Subsequent FDSIDs will have different mappings.

Several checks are done by the NPV core to ensure the uniqueness of virtual pWWNs in the switch across the NPV switches. When duplicate virtual pWWNs are configured, the subsequent logins are rejected by the NPV core switch.

Prerequisites

•The interface must be in a shut state and the specified virtual pWWN should not be logged in.

	Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
8-4	OL-29284-01, Release 6.x