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CX11x, CX31x, CX710 (Earlier Than V6.03), and CX91x Series Switch Modules V100R001C10 Configuration Guide 13

The documents describe the configuration of various services supported by the CX11x&CX31x&CX91x series switch modules The description covers configuration examples and function configurations.
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Introduction to Routing Policy

Introduction to Routing Policy

This section defines routing policies and describes their purpose and functions.


Routing policies are used to filter routes and set attributes for routes. By changing route attributes (including reachability), a route policy changes the path that network traffic passes through.


When advertising, receiving, and importing routes, routing protocols implement certain policies based on actual networking requirements to filter routes and change the attributes of the routes. Routing policies serve the following purposes:

  • To control route receiving and advertising

    Only the required and valid routes are received or advertised. This reduces the size of the routing table and improves network security.

  • To control route importing

    A routing protocol may import routes discovered by other routing protocols. Only routes that satisfy certain conditions are imported to meet the requirements of the protocol.

  • To modify attributes of specified routes

    Attributes of the routes that are filtered by a routing policy are modified to meet the requirements of the local device.


This feature brings the following benefits:
  • Controls the size of the routing table, saving system resources.
  • Controls route receiving, advertising and importing, improving network security.
  • Modifies attributes of routes for proper traffic planning, improving network performance.
Updated: 2019-12-13

Document ID: EDOC1000041694

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