Setting The Bandwidth Guaranteed The Queue - HP ProCurve Secure Router 7203 dl Advanced Management And Configuration Manual

Setting Up Quality of Service
Configuring LLQ
For Frame Relay connections, packets are queued on the Frame Relay inter-
face. When one of the Frame Relay subinterfaces is part of a bridge group, you
can place bridged traffic in a low-latency queue to speed processing and
transmission. The queue also guarantees that the bridged traffic receives the
portion of the bandwidth it needs. Setting the maximum bandwidth for
packets in this queue also ensures that bridged traffic does not starve out non-
bridged traffic.
To select bridged traffic for the queue, enter:
Syntax: match protocol bridge [netbeui]
NetBEUI allows hosts to communicate within the LAN. To allow only this
traffic access to the low-latency queue, use the optional netbeui keyword.

Setting the Bandwidth Guaranteed the Queue

After you select which traffic the QoS map entry should place in the queue,
you must select how much bandwidth it should guarantee this queue. See
"Determining Bandwidth for the Queue" on page 7-31 for some general guide-
lines on arriving at this value.
Enter:
Syntax: priority [<Kbps> | unlimited] [burst <Kbps>]
Valid range for the bandwidth in Kbps is 8 to 1000000.
For example, enter:
ProCurve(config-qos-map)# priority 512
The Kbps value is the maximum bandwidth guaranteed to the queue. The
traffic you placed in the queue will receive priority above all other traffic until
it reaches the specified bandwidth. If the link is uncongested, priority traffic
is allowed to burst up to the interface rate; otherwise, priority traffic above
the specified bandwidth can be dropped.
The router automatically calculates a burst value, which it uses to allow traffic
to temporarily burst above its maximum guaranteed limit. You can also
configure this burst value manually with the burst option. However, you
should usually keep the default value.
If you specify the unlimited option, priority traffic will take all the bandwidth
available on the interface.
7-41