Deployment Guide

Policy-based Routing (PBR)
Dell Networking OS supports policy-based routing.
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
Topics:
• Overview
• Implementing Policy-based Routing with Dell Networking OS
• Conguration Task List for Policy-based Routing
• Apply a Redirect-list to an Interface using a Redirect-group
• 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.
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