Inactive Route Advertisement

BGP inactive routes are defined as those routes that are rated best by BGP and not best in IP routing table. For example, an IGP route to the same destination may be best because it has a higher priority in the IP route table than the BGP best route. The default configuration of the ExtremeXOS software does not advertise BGP inactive routes to BGP neighbors.

The default configuration (no BGP inactive route advertisement) is more consistent with data traffic forwarding. However, when advertisement of inactive BGP routes is enabled, BGP need not depend upon the route manager module to know whether a BGP route is active or not. This actually improves the performance of BGP processing and advertisement.

When BGP inactive route advertising is enabled, inactive BGP routes are considered for BGP route aggregation. When this feature is disabled, inactive BGP routes are ignored while aggregating routes.