1-7z Select the router ID configured with the router id command;z Select the highest IP address among the IP addresses of loopback interfaces as the router ID:z If no loopback interface IP address is available, the highest IP address among the IP addresses ofphysical interfaces is selected as the router ID (regardless of the interface state).z If the interface whose IP address is the router ID is removed or modified, a new router ID isselected. Other events, (the interface goes down; after a physical interface’s IP address isselected as the router ID, an IP address is configured for a loopback interface; a higher interfaceIP address is configured) will not trigger router ID re-selection.z A VPN instance selects a router ID among the IP addresses of interfaces belonging to it accordingto the preceding procedure.z When a master/backup switchover occurs, the backup device selects a router ID according to thepreceding procedure.z After a router ID is changed, you need to use the reset command to make it effective.Displaying and Maintaining a Routing TableTo do… Use the command… RemarksDisplay brief information about theactive routes in the routing tabledisplay ip routing-table [ vpn-instancevpn-instance-name ] [ verbose | | { begin |exclude | include } regular-expression ]Available in any viewDisplay information about routes tothe specified destinationdisplay ip routing-table ip-address[ mask-length | mask ] [ longer-match ][ verbose ]Available in any viewDisplay information about routeswith destination addresses in thespecified rangedisplay ip routing-table ip-address1{ mask-length | mask } ip-address2{ mask-length | mask } [ verbose ]Available in any viewDisplay information about routespermitted by an IPv4 basic ACLdisplay ip routing-table acl acl-number[ verbose ] Available in any viewDisplay routing informationpermitted by an IPv4 prefix listdisplay ip routing-table ip-prefixip-prefix-name [ verbose ] Available in any viewDisplay routes of a routing protocol display ip routing-table protocol protocol[ inactive | verbose ] Available in any viewDisplay statistics about thenetwork routing table or a VPNrouting tabledisplay ip routing-table [ vpn-instancevpn-instance-name ] statistics Available in any viewDisplay the router ID display router id Available in any view
