HP Onboard Administrator - Manual (Page 150)

Configuring the HP BladeSystem c7000 enclosure and enclosure devices 150
Ethernet frames with VLAN tags for multiple VLANs through the Onboard Administrator's external Ethernet
interface.
VLAN Features
• The VLAN ID is a unique number, which identifies each VLAN. The allowable range of VLAN ID
numbers is 1 to 4094. By default, VLAN is disabled, and all devices are set to VLAN ID 1. After a VLAN
is configured, devices that do not have the same VLAN ID cannot communicate with each other.
• All untagged frames received by Onboard Administrator are assigned to the default VLAN ID.
Onboard Administrator responds with untagged frames. All tagged frames have a VLAN ID or tag in
the frame, and Onboard Administrator responds with tagged frames.
• If a tagged frame is sent using the default VLAN ID, it is dropped by Onboard Administrator, because
Onboard Administrator expects default VLAN ID frames to be untagged. If the destination is the server
or interconnect, then the Onboard Administrator responds with untagged frames.
• Traffic between the iLO/IOM and the Broadcom switch is untagged, making VLAN transparent to them.
Incoming traffic destined to the device is tagged by Onboard Administrator going into the Broadcom
switch which then removes the tag before sending the traffic to the device. The Broadcom switch adds
the default VLAN ID to the port the device is attached to the outgoing traffic of the device before sending
it out.
• The VLAN ID of the server, interconnect module, and Onboard Administrator is configurable to allow
Onboard Administrator to be part of any network by configuring the VLAN ID to match the default
VLAN setting of the external switch that the Onboard Administrator is connected to.
• The Onboard Administrator firmware assigns the default VLAN ID to all non-configured bays. The
default VLAN ID can be changed by the user. You can associate a name, limited to 31 alphanumeric
characters, to a VLAN ID. You can save up to 25 VLAN entries with a VLAN ID and name at one time.
• VLAN supports SAS interconnect peer-to-peer communication. There is also full interface support for CLI
and GUI along with limited support for LCD. You can enable and disable VLAN and view or change
VLAN IDs though the Insight Display. There is no VLAN support on the enclosure link and service port.
• Both active and standby Onboard Administrator are set to the same VLAN configuration settings,
causing any changes to the active Onboard Administrator to be made to the standby Onboard
Administrator as well. No changes can be made to the standby Onboard Administrator, but you can
view the settings.
• You can configure or change VLAN settings with VLAN disabled. Run-time user changes are saved in
RAM only and are lost when Onboard Administrator is restarted. Use the Save Config command to
save configuration changes permanently.
• You can configure VLAN remotely. VLAN configuration changes are saved in RAM only, and these
changes are discarded upon reboot unless you save the changes to FLASH.
• Devices on different VLAN domain networks cannot communicate. All servers and interconnects,
regardless of their VLAN ID, can still be managed using the Onboard Administrator. The client machine
and the Onboard Administrator must be on the same VLAN ID to access the Onboard Administrator.
HP recommends using a console terminal to configure your network to prevent loss of communication when
changing the VLAN configuration. The corresponding changes should then also be made to the external
switch that Onboard Administrator is connected to.