HP-UX IPQoS A.01.00 Administrator's Guide (October 2005)

Getting Started with HP-UX IPQoS
HP-UX IPQoS Deployment Components
Chapter 3 47
The Role of Policies
Policies are used to decide what happens to selected classes of traffic. Policies work to
translate business-level goals into specific operational behaviors. Tailor your policies to
address specific traffic management issues.
HP-UX IPQoS policies can specify reservation bandwidth (dedicated minimal percentage of
available), maximum allowed bandwidth (percentage for non-reserved bandwidth when
available), DSCP field marking, and VLAN priority marking.
The reservation bandwidth rate specifies the rate you want to assure traffic can access when
the network is congested. If you want this rate to increase unbounded during uncongested
periods, do not specify a maximum bandwidth value. If you want to limit the traffic to a
specific rate even when there is no congestion, then specify a maximum bandwidth rate.
The reservation and maximum bandwidth rates assigned to traffic classes must take into
account the total bandwidth available on the local network to which the HP-UX IPQoS system
is attached. The percentage of the reservation bandwidth can not exceed 100% (100%-80Kbps
for HP-UX IPQoS).
General Pseudo-Syntax Example
A high-level overview of the HP-UX IPQoS configuration file syntax follows:
#######
#
# Pseudo-Syntax Configuration File Example
#
filter filter1 {
filter1_attributes
}
filter filter2 {
filter2_attributes
}
policy policy1 {
policy1_attributes
}
policy policy2 {
policy2_attributes
}
adapter lanX {
adapter_attributes
}
adapter lanY {
adapter_attributes