9436 Nokia Network Voyager for IPSO 4.0 Reference GuideVerificationTo verify that you have configured route dampening correctly, run the following command iniclid.:show route bgp suppressedFor more information on this command, see “Viewing Routing Protocol Information.”BGP Path SelectionThe following rules will help you understand how BGP selects paths: If the path specifies a next hop that is inaccessible, drop the update. Prefer the path with the lowest weight. A route whose weight value is not specified is alwaysless preferred than the path with the highest set weight value. Normally, the route with thehighest set weight value is the least preferred.NoteThe Nokia implementation of weight value differs from that of other vendors. If the weights are the same, prefer the path with the largest local preference. If the local preferences are the same, prefer the route that has the shortest AS_path. If all paths have the same AS_path length, prefer the path with the lowest origin type (OriginIGP < EGP < Incomplete). If the origin codes are the same, prefer the path with the lowest MED attribute (if MED isnot ignored). If the paths have the same MED, prefer the external path over the internal path. If the paths are still the same, prefer the path through the closest IGP neighbor. Prefer the path with the lowest IP address, as specified by the BGP router ID.BGP-4++ ExampleThis example describes how to configure a BGP4 session over IPv6 transport. In this example, aconnection is established between 2 routers (Router 1 and Router 2) in different autonomoussystems over an IPv6 network to exchange both IPv4 and IPv6 routes.The following procedure describes the process, which consists of configuring the connection oneach router, and then advertising the routes to Router 2.
