HP Virtual Connect Enterprise Manager Software - Manual (Page 134)

7 Managing MAC and WWN addresses
MAC Addresses
NOTE: A "VCEM-defined” range has been reserved, from which VCEM allocates MAC addresses.
VCEM no longer uses the “HP pre-defined” range for MAC address allocation. However, server
profiles created before VCEM 1.40 will continue to use the HP pre-defined addresses already
assigned to them.
When using VCEM-assigned MAC addresses, you can choose between VCEM-defined MAC
address ranges or user-defined MAC address ranges. You can use the HP predefined MAC address
range only to import server profiles or server profiles created on previous versions of VCEM.
•
VCEM-defined MAC address ranges—HP recommends this range. This predefined range is
reserved and never appears as factory-default on any hardware. There are 131,072 unique
addresses from which VCEM automatically assigns to server profiles on demand.
•
User-defined MAC address range—To prevent potential conflict with other hardware MAC
addresses in the environment, you can use a subrange of MAC addresses reserved by the
IEEE for locally administered MAC addresses. Ensure that the range does not conflict with any
Ethernet device already deployed within the enterprise.
To access the MAC addresses from the VCEM home page, click the MAC addresses hyperlink.
The MAC Ranges List page appears.
Figure 85 MAC Ranges List page
Tracking individual MAC addresses
Individual addresses in a MAC range (HP-predefined, VCEM-defined, or user-defined) can be
monitored by clicking the Individual addresses secondary tab within the MAC Ranges List page.
The following table lists and describes the MAC address status at Individual address page.
Description Item
Address available to use in VCEM. Free
Address currently used by a server profile in VCEM. In use
Addresses used by server profiles in a VC Domain that
have been released back to VCM and no longer managed
by VCEM. External Address
Addresses that reside in a VCEM Exclusion range list.
VCEM will not allocate any address that is marked as
excluded. Excluded Addresses
134 Managing MAC and WWN addresses