HP Virtual Connect Enterprise Manager Software - Manual (Page 56)

Figure 22 Displaying VC Domain Group FC fabric type
Using VLAN capacity
CAUTION: VCM firmware versions 3.3x through 3.6x or later does not allow you to easily revert
back from Expanded VLAN capacity mode to Legacy capacity mode. To revert back to Legacy
capacity mode, you must delete the VC Domain in VCM.
VC firmware 3.70 removes support for legacy VLAN capacity. All VC domains with VC 3.70
installed support "Expanded VLAN Capacity". When adding a VC 3.70 Domain into a VC Domain
Group, you must ensure that the VC Domain Group is configured for "Expanded VLAN Capacity".
This can be done by putting one of the VC Domains in the VC Domain Group into maintenance
mode and configuring "Expanded VLAN Capacity" in VCM. Complete maintenance mode to
propagate this change to all the member VC Domains.
If a VC firmware earlier than 3.70 is running in Legacy mode and it is updated to VC firmware
3.70, VLAN capacity will continue in Legacy mode.
Before applying Expanded VLAN capacity to a VC Domain 3.3x or later during Maintenance
Mode, make sure the VC Domain Group that the VC Domain belongs to is running firmware mode
3.3x or higher (this is a VCEM rule). If you change a VC Domain 3.3x to Expanded VLAN Capacity
and the VC Domain Group firmware mode is lower than 3.3x, the Complete Maintenance Mode
operation will fail, because VCEM will detect an enabled feature (Expanded VLAN capacity) not
56 Managing VC Domains