Frf.12; Qos Maps - HP 7102dl - ProCurve Secure Router Configuration Manual

Setting Up Quality of Service
Overview
8-12
VoIP
Figure 8-2. Low Latency Queuing

FRF.12

FRF.12 fragments large data frames so that a Frame Relay interface can
forward each frame with less delay. This allows low latency frames, such as
VoIP, more opportunities to be forwarded and minimizes delay.
For a more detailed discussion of each of these QoS protocols, see the sections
in this chapter on configuring the protocols.

QoS Maps

A QoS map defines QoS policy for an interface on the ProCurve Secure Router.
You use it for three functions:
define a class for CBWFQ
create and define the criteria for a low-latency queue
mark packets with an IP precedence or DiffServ value
A QoS map is a list of sequenced entries. Each entry is defined by a name and
a sequence number. The name of the map is the name of the map as a whole.
The sequence number has two functions:
It differentiates entries in the same QoS map—Maps with multiple entries
allow you to implement a comprehensive QoS policy on an interface. For
example, a single QoS map can establish several low-latency queues. It
can also define multiple classes for the traffic sharing the remaining
bandwidth using CBWFQ. Each entry defines one low-latency queue or
one class.
2 1
Router
Queue
LLQ
2 1 VoIP
Guaranteed
bandwidth
VoIP