HP AA979A - StorageWorks SAN Switch 2/8V, Administrator'S Manual

Page: 43 / 465

Fabric OS 5.3.0 administrator guide 43
CAUTION: If you enable or disable an active port you will disrupt any traffic and potentially lose data
transmission on that port.
If the port is connected to another switch, you will segment the switch from the fabric and all traffic between
the disabled port and the fabric will be lost.
How to activate Ports on Demand
1. Connect to the switch and log in as
admin
.
2. Optionally, to verify the current states of the ports, use the
portShow
command.
In the
portShow
output, the Licensed field indicates whether the port is licensed or not.
3. Install the Ports on Demand license. For instructions, refer to ” Activating ports on demand ” on page 42.
4. Use the
portEnable
command to enable the ports.
5. Optionally, use the
portShow
command to check the newly activated ports.
If you remove a Ports on Demand license, the licensed ports will become disabled after the next
platform reboot or the next port deactivation.
Configuring Dynamic Ports on Demand (DPOD)
IMPORTANT: At the time of this document’s release, this feature is supported on the Brocade 4Gb SAN
Switch for c-Class Bladesystem embedded switch only. See ://www.hp.com for latest product updates.
Port assignments and licenses
The Dynamic POD feature detects and assigns ports to a POD license only if the server blade is installed
with an HBA present. A server blade that does not have a functioning HBA is treated as an inactive link
during initial POD port assignment.
The Dynamic POD feature assigns the ports to the POD license as they come online. Typically, assignments
are sequential, starting with the lowest port number. However, variations in the equipment attached to the
ports can cause the ports to take different amounts of time to come online. This means that the port
assignment order is not guaranteed.
If the switch detects more active links than allowed by the current POD licenses, then some ports will not be
assigned a POD license. Ports that do not receive a POD assignment have a state of No Sync or In Sync;
these ports are not allowed to progress to the online state. Ports that cannot be brought online because of
insufficient POD licenses have a state of (No POD License) Disabled. (Use the
switchShow
command to
display the port states.)
To allocate licenses to a specific port instead of automatically assigning them as the ports come online,
reserve a license for the port using the
licensePort
command described in “Managing POD licenses”
on page -46 . The port receives a POD assignment if any are available.
After a port is assigned to the POD set, the port is licensed until it is manually removed from the POD port
set using the
licensePort
--
release
command. When a port is released from its POD port set (Base,
Single, or Double), it creates a vacancy in that port set.
Displaying the port license assignment
Use the
licensePort
--
show
command to display the available licenses, the current port assignment of
those licenses, and the POD method state (dynamic or static).
To display the port licenses:
1. Connect to the switch and log in as
admin
.
2. Enter the
licensePort
--
show
command.
switch:admin> licenseport --show
24 ports are available in this switch