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Configuration Guide - IP Routing 01

NE05E and NE08E V300R003C10SPC500

This is NE05E and NE08E V300R003C10SPC500 Configuration Guide - IP Routing
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Configuring a Route Attribute Set

Configuring a Route Attribute Set

Route attribute sets can be referenced by route-filters to filter the routes with the same or similar route attribute.

Usage Scenario

If the routes to be filtered have the same or similar route attribute, you can configure a route attribute set for them, and the route attribute set can be referenced by a route-filter to filter the routes. The route attribute sets supported by the NE are as follows:
  • IPv4 prefix sets: apply to all dynamic routing protocols and can be used to match source, destination, and next hop IP addresses.
  • IPv6 prefix sets: apply to all dynamic routing protocols and can be used to match source, destination, and next hop IPv6 addresses.
  • AS_Path sets: apply only to BGP and are used to match the AS_Path attribute of BGP routes.
  • Community sets: apply only to BGP and are used to match the community attribute of BGP routes.
  • RD sets: match the RD attributes of VPN routes.
  • Route target sets: match the RTs of VPN routes.
  • Site of origin (SoO) sets: match the SoOs of VPN routes.
NOTE:

Sets do not have the permit or deny function as routing policies do. Instead, sets are only groups of data used as matching rules, and the actions to be applied are specified in route-filters.

Route attribute sets can have no elements.

The easiest method to configure route-filters to reference route attribute sets is to use the format {element A, element B...}, if ip route-source in { 1.1.1.0 24, 2.2.2.2 32 } then for example. However, if a route-filter needs to reference a set multiple times, configure named route attribute sets.

Pre-configuration Tasks

Before configuring a route attribute set, complete the following tasks:
  • Select a route attribute set based on the characteristics of the routes to be filtered.

  • If some values need to be frequently used, configure a global variable set, which is easy to configure and use.

Perform one or more of the following configurations as required:

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Updated: 2019-01-14

Document ID: EDOC1100058916

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