Configuring Policy-Based Routing; Policy-Based Routing Overview; Applications; Separate Routing Of Voice And Data Traffic - Avaya G350 Administration

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Configuring policy-based routing

This chapter provides information about configuring policy-based routing on the G350 and contains the
following sections:
•

Policy-based routing overview

•

Applications

•
Defining PBR lists
•
Attaching a PBR list to an interface
including a description of how PBR lists interact with other policy lists
•
Defining Rules
•
Defining Next Hop Lists
•
Displaying PBR lists
•
Application example
Policy-based routing overview
Policy-based routing uses the policy list structure described in
implement a routing scheme based on traffic source, destination, type, and other characteristics. You can
use policy-based routing (PBR) lists to determine the routing of packets that match the rules defined in
the list. Each PBR list includes a set of rules, and each rule includes a next hop list. Each next hop list
contains up to 20 next hop destinations to which the G350 sends packets that match the rule. A
destination can be either an IP address or an interface.
Applications
There are many possible applications for policy-based routing. This section describes some of those
applications, including:
•

Separate routing of voice and data traffic

•
Source-based transit provider selection
•
Backup
Separate routing of voice and data traffic
Although there are many possible applications for policy-based routing, the most common application is
to create separate routing for voice and data traffic.
For example, the application shown in
on page 178 uses the DSCP field to identify VoIP control packets (DSCP=34, 41), VoIP Bearer RESV
packets (DSCP = 43, 44), and VoIP Bearer packets (DSCP = 46). Policy-based routing sends these
packets over the WAN, and sends other packets over the Internet.
Administration of the Avaya G350 Media Gateway
June 2004
— an overview of policy-based routing
— a description of common policy-based routing applications
— instructions on how to configure policy-based routing (PBR) lists
— instructions on how to attach a PBR list to an interface,
— instructions on how to configure rules
— instructions on how to configure next hop lists
— instructions on how to view the configuration of PBR lists
— an example of a policy-based routing application
Figure 14, Policy-based routing — Voice/Data Division By DSCP,
Configuring policy-based routing
Policy-based routing overview
Configuring policy on page 159 to
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