HP Virtual Connect Enterprise Manager 6.1 User Guide

7 Managing MAC and WWN addresses
This section describes how to manage MAC and WWN addresses using VCEM.
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, 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 pre-defined MAC address range only for import
profiles or 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 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 7-1 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.
MAC Addresses 73