Implementing Pbr According To Traffic Priority - HP 7102dl - ProCurve Secure Router Configuration Manual

IP Routing—Configuring RIP, OSPF, BGP, and PBR
Configuring Policy-Based Routing
15-134

Implementing PBR According to Traffic Priority

A packet's IP header includes a type of service (ToS) field that can be marked
with various values to request a certain quality of service (QoS) for that packet.
The ToS field can include either an IP precedence value or a Differentiated
Service Code Point (DSCP). (See Chapter 8: Setting Up Quality of Service
for more information on QoS and the ToS field.)
You can use a route map to route traffic with different ToS values over different
paths. In this way, you can reserve a particular connection for high priority
traffic. For example, VoIP applications often mark VoIP packets with a ToS
value. You can select these packets by matching the route map to this value.
To select a packet according to the value marked in its ToS field, move to the
route map configuration mode context.
If your network uses IP precedence, use this command to select traffic:
Syntax: match ip precedence [critical | flash | flash-override | immediate | internet |
network | priority | routine | <value>]
You can either enter a value between 0 and 7 or enter the keyword for the
priority. IP precedence 5 (critical) is the highest priority for user traffic;
values 6 and 7 are used for Internet control traffic and private network control
traffic respectively. Refer to Table 15-16 for the value that corresponds to each
keyword.