Administrator Guide

Policy-based Routing (PBR)

Policy-based Routing is supported on the MXL platform.

This chapter covers the following topics:

• Overview

• Implementing Policy-based Routing with Dell Networking OS

• Conguration Task List for Policy-based Routing

• Sample Conguration

Overview

Policy-based Routing (PBR) enables you to make routing decisions based on policies applied to a specic interface. When a router

receives a packet it normally decides where to forward it based on the destination address in the packet, which is used to look up an

entry in a routing table. However, in some cases, there may be a need to forward the packet based on other criteria: size, source,

protocol type, destination, etc. For example, a network administrator might want to forward a packet that uses TCP across a

dierent next-hop than packets using ICMP.

Rules for PBR can also be a combination of things:

When the packet comes from this source and wants to go to that destination then route it to next-hop or onto that specic

interface. This permits routing over dierent links or towards dierent networks even while the destination is the same but

depending on where the packet originates.

Policy-based Routing (PBR)

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