No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

Configuration Guide - IP Unicast Routing

S7700 and S9700 V200R013C00

This document describes the configurations of IP Unicast Routing, including IP Routing, Static Route, RIP, RIPng, OSPF, OSPFv3, IPv4 IS-IS, IPv6 IS-IS, BGP, Routing Policy, IP Routing Table Management, and PBR.
Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Overview of PBR

Overview of PBR

Definition

Policy-based routing (PBR) allows switches to select routes based on user-defined policies. After PBR is configured on the device, if the received packets (including Layer 2 packets) match PBR rules, the device forwards the packets according to the rules. If the packets do not match PBR rules, the device forwards the packets according to the destination address of the packets.

NOTE:
The main differences between PBR and routing policies are:
  • PBR changes the forwarding path of packets based on user-defined policies instead of based on the routes in an IP routing table.
  • Routing policies change the forwarding path of packets by filtering routes and setting route attributes. For example, route attributes (including reachability) can be set to change the forwarding path of network traffic.

Purpose

Traditionally, to determine the routes used to forward packets, a switch searches its IP routing table based on the destination address carried in the packets. To allow switches to route packets based on user-defined policies, PRB can be configured.

Benefits

PBR has the following advantages:

  • Allows network administrators to define policies for routing packets, improving route selection flexibility.
  • Enables different data flows to be forwarded on different links, increasing link efficiency.
  • Allows cost-effective links to be used for transmitting service data without affecting service quality, reducing the cost of enterprise data services.
Translation
Download
Updated: 2019-04-08

Document ID: EDOC1100065744

Views: 56163

Downloads: 46

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Share
Previous Next