You refer to the
stub object that you track as the match track object. The device checks for the
existence of the match track object and issues an error message if there is
none. Then registration with the tracking component is done to track this
object. The device issues an error in case the registration fails.
Figure 1. Match track
redistribution, the routing protocols check the route map for matches with
existing routes. This provides an exact route map that corresponds to the
specific match criteria. When you apply this route map with the match track
object, the device checks the status of the match track object and provides a
specific route map.
Figure 2. Route map on
redistribution using routing protocols
The device uses
Border Gateway Protocol (BGP) for route-filtering and distribution. The device
uses the existing notification mechanism to notify the routing protocols about
the new match clause and also notifies the routing protocols about any change
in the match track object status depending upon the Policy-Based Routing (PBR)
query on redistribution.