HP Virtual Connect for c-Class BladeSystem Setup and Installation Guide

HP Virtual Connect Manager 69
mapping VLANs to server connections. When VCM detects that no legacy modules are present in the
domain, it enables the selection of a new domain mode that expands the VLAN capacity. The increase in the
number of VLANs per domain, in addition to the flexibility of allocating VLANs among the server connections
for a physical port, provides you with more options when configuring a Virtual Connect environment.
CAUTION: If VCEM is managing the domain, be sure that the VCDG containing the domain is
running at a firmware mode of 3.30 or higher before applying VLAN capacity changes. Failure
to do so requires removal of the domain from the VCEM VCDG.
Legacy VLAN capacity
This mode has the same limits as previous releases of Virtual Connect. There is a limit of 320 VLANs per
Ethernet module and 128 VLANs per shared uplink set. Every VLAN on every uplink counts towards the 320
VLAN limit. If a shared uplink set is comprised of multiple uplinks, each VLAN on that shared uplink set is
counted multiple times. In addition, each server connection is limited to 28 VLANs. If less than 28 VLANs are
used on a server connection, the remaining capacity is not made available to other server connections on the
same physical server port. All VC Ethernet modules are supported.
Expanded VLAN capacity
This mode allows up to 1000 VLANs per domain. The number of VLANs per shared uplink set is restricted to
1000. In addition, up to 162 VLANs are allowed per physical server port, with no restriction on how those
VLANs are distributed among the server connections mapped to the same physical server port. There is also
a limit of 162 VLANs per server connection. However, care must be taken not to exceed the limit per physical
server port. For example, if you configure 150 VLAN mappings for a server connection (FlexNIC-a) of a
Flex-10 physical server port, then you can only map 12 VLANs to the remaining three server connections
(FlexNIC-b, FlexNIC-c, and FlexNIC-d) of the same physical server port. If you exceed the 162 VLAN limit,
the physical server port is disabled and the four server connections are marked as Failed.
CAUTION: After Expanded VLAN Capacity mode is configured, you must delete the VC domain
to return to Legacy VLAN Capacity mode.
IMPORTANT: Expanded VLAN Capacity mode is not supported on the following VC Ethernet
modules:
• HP 1/10Gb VC-Enet Module
• HP 1/10Gb-F VC-Enet Module
If these modules are inserted into an enclosure that is in Expanded VLAN Capacity mode, they are
marked as incompatible.
Multiple Networks Link Speed Settings
When using mapped VLAN tags (multiple networks over a single link), these settings are used for the overall
link speed control. Select the checkbox next to each item to set the value.
These settings affect only newly created profiles.
To change these settings, click the selection box, and then select a setting (100Mb to 10Gb):
• Set a Custom value for the Preferred Link Connection Speed. This value is the default speed for server
profile connections mapped to this network. The server administrator can override this setting on an
individual profile connection.
• Set a Custom value for the Maximum Link Connection Speed. This value is the maximum speed for
server profile connections mapped to this network.
Virtual Connect can only control link speed for Flex-10 NICs when they are connected to an HP Virtual
Connect Flex-10 Module. Virtual Connect cannot control the link speed of traditional NICs. For more