Configuration - HP ProCurve 6400cl Series Management And Configuration Manual

Guaranteed Minimum Bandwidth (GMB) on the Series 5300xl Switches
For example, suppose you wanted to configure the following outbound mini-
mum bandwidth availability for ports A1 and A2:
Priority of Minimum
Outbound Bandwidth
Port Queue %
4 50
3 20
2 20
1 10
Either of the following commands configures ports A1 and A2 with the
bandwidth settings shown in the preceding table:
HPswitch(config)#int a1-a2 bandwidth-min output 10 20 20 50
HPswitch(eth-A1-A2)#bandwidth-min output 10 20 20 50
Displaying the Current Guaranteed Minimum Bandwidth

Configuration

This command displays the per-port GMB configuration in the running-config
file.
Syntax: show bandwidth output [ port-list ]
Without [ port-list ], this command lists the GMB configuration
for all ports on the switch. With [ port-list ], this command lists
the GMB configuration for the specified ports. This command
operates the same way in any CLI context. If the command
lists Disabled for a port, there are no bandwidth minimums
configured for any queue on the port. (Refer to the description
of the no form of the bandwidth-min output command on page
13-11.)
Effect on Outbound Bandwidth Allocation
Queue 4 has the first priority use of all outbound bandwidth not
specifically allocated to queues 1 - 3. If, for example, bandwidth
allocated to queue 1 is not being used and queues 3 and 4 become
oversubscribed, queue 4 has first-priority use of the unused
bandwidth allocated to queue 1.
Queue 3 has a guaranteed minimum bandwidth of 20% available
for outbound traffic. If queue 3 becomes oversubscribed and
queue 4 is not already using all of the unallocated bandwidth, then
queue 3 can use the unallocated bandwidth. Also, any unused
bandwidth allocated to queues 1 or 2 is available to queue 3 if
queue 4 has not already claimed it.
Queue 2 has a guaranteed minimum bandwidth of 20% and, if
oversubscribed, is subordinate to queues 4 and 3 in priority for
any unused outbound bandwidth available on the port.
Queue 1 has a guaranteed minimum bandwidth of 10% and, if
oversubscribed, is subordinate to queues 4, 3, and 2 for any
unused outbound bandwidth available on the port.
Port Traffic Controls
13-13