Documentation

Name

bgp topology policies -  configure topology-wide route filters

Synopsis

policies

Description

This command configures the route filters of the BGP sessions according to business policies specified in the loaded AS-level topology (see bgp topology load).

The filters are composed of two parts. The first part enforces the valley-free property. The second part enforces a preference for routes depending on the type of neighbor they are received from. Routes from customers receive the highest preference, followed by routes received from shared-cost peers and finally, routes received from providers are the less preferred. The filters are implemented using the LOCAL-PREF and COMMUNITIES.