OSPF uses route labels for precise redistribution

OSPF uses route labels for precise redistribution of www.2cto.com router-id x. x. x. x with the OSPF router RIDsummary-address x. x. x. x. x. x. x route aggregation redistribute connected subnets redistribution direct connection route summary-address x. x. x. x. x. x. x tag x marks the redistribute ospf x metric x route-map xxxroute-map xxx permit 10 match tag x redistributes only the marked route ip ospf authentication-key xxxarea x authentication perform plaintext authentication for the region ip ospf message-digest-key 1 md5 xxxarea x authentication message-digest The region performs ciphertext authentication. During the authentication, you can change the password without interruption. The service password-encryption encrypts the plaintext password. area x default-cost xxx modifies the default cost value of the external route, work on the ABR only. area x stub only receives Class 1, class 2, and class 3 LSA, and there is a Class 3 default routing. area x stub no-summary only receives Class 1 and Class 2 LSA, in addition, there is a default route of three categories. On the ABR, the area x nssa receives only 1, 2, 3, and 7 types of LSA, and 7 types of LSA --> 5 types of LSA, class 5 LSA-X-> Class 7 LSAarea x nssa no-summary receives Class 1, class 2, Class 7 LSA, there is a Class 3 default route, on the ABR, tap area x nssa default-information-originate ABR to generate a default 7-class LSA to The NSSA region ============== ============================== ========================================================== Area x virtual-link x. x. x. x creates virtual link area x virtual-link x Between "ABR. x. x. x authenticationarea x virtual-link x. x. x. x authentication-key xxx enables plaintext authentication on the virtual link area x virtual-link x. x. x. x authentication message-digestarea x virtual-link x. x. x. x message-digest-key xxx enables ciphertext authentication on the virtual link. The ciphertext password is changed periodically without interruption. area 0 authentication [message-digest] area x virtual-link x. x. x. x authenticati On-key xxx performs plaintext authentication on Region 0. You need to add a plaintext password to both ends of the virtual link and enable authentication on Region 0. area x virtual-link x. x. x. x message-digest-key 1 md5 xxx performs plaintext authentication on Region 0. You must add a ciphertext password to both ends of the virtual link and enable area x virtual-link x authentication on Region 0. x. x. x authentication null blocks the authentication area x virtual-link x for area 0 on the virtual link. x. x. x hello-interval xxx dead-interval xxx modifies the hello and dead time at both ends of the virtual link. Only when the time is consistent can neighbors be created. The default value is hello 10 s, the NBMA network is hello 30 s, and dead is four times the value of hello. Area x virtual-link x. x. x. x retransmit-interval xxx modifies the LSA retransmission interval on the virtual link, and the local valid area x virtual-link x. x. x. x transmit-delay xxx modifies the delay of LSA propagation on the virtual link, and the local valid ip ospf cost xxx modifies the cost value of the ingress interface, we do not recommend using this command auto-cost reference-bandwidth xxx to modify the OSPF reference bandwidth, by default, OSPF cannot calculate the cost value for interfaces above M or M ======================== ========================================================== ============ ip route 0.0.0.0 0.0.0.0 s1/0default-information originate publishes The default route 0.0.0.0default-information originate always, regardless of whether there is a default route in the route table, force the default route 0.0.0.0default-information originate metric xxx to be released to the OSPF region to modify the metric value of the released default route, the default value is 1default-information originate always metric xxx to modify the metric size of the forcibly released default route. The default value is 1default-information originate metric-type [1 2] to modify the metric type of the released default route, the default value is type 2. Only the external cost is calculated. default-information originate always metric-type [1 2] access-list 1 permit 3.3.3.0 0.0.3ro Ute-map ccna permit 10 match ip address 1default-information originate route-map ccna controls the release of default routes. The default route is published to the OSPF region only when the route entry 3.3.3.0/30 exists. Default-metric xxx modifies the default metric value of the redistribution route. However, if metric is specified during redistribution, this command is not restricted. By default, the metric that is redistributed to the OSPF area is 20, except that the BGP is 1. Distance xxx modifies the OSPF Management distance. The default value is 110 distance xxx x. x. x. x [x. x. x. x mask] modifies the management distance of a route from a specified source to distance xxx x. x. x. x [x. x. x. x mask] access-list-number modifies the management distance of a specific entry from a specific source through the access list. Distance ospf external xxx modify the Management distance of OSPF external routes distance ospf inter-area xxx modify the Management distance of routes between OSPF regions distance ospf intra-area xxx modify the Management distance of routes in OSPF region distribute -list x in distribution list control route entries placed in the route table distribute-list x in int s1/0 distribution list applied on different interfaces, control Filtering of different route entries passive-interface fa0/0 and set the passive interface. The passive interface does not run OSPF to reduce protocol traffic. Passive-interface defaultno passive-defaultredistribute VPN 1 subnets tag xxx marks the OSPF redistribution route. It is mainly used to reference route entries through route-map. Redistribute image1 subnets metric 55 modify the metric value of the redistribution route. Redistribute image1 subnets metric 55 metric-type 1 modify the specified measurement and change the external type. Redistribute image1 subnets metric 55 metric-type 1 tag xxxredistribute image1 subnets route-map xxx use route-map to filter routes ============== ========================================================== ===================================== route-map xxx permit 10 match ip add xset tag xredistribute image1 subnets route -map xxx marks the route-map xxx permit 10 match tag xredistribute image1 subnets route-map xxx for the re-Distribution route ip ospf flood-r marked with x The configuration on the eduction interface makes regular LSA updates ineffective. By default, all LSAs are updated in 30 minutes. Ip ospf demand-circuit changes the link to an on-demand circuit. Regular hello updates are forbidden. The debug ip ospf eventsip ospf database-filter all out prevents the LSA on the interface from spreading. Ip ospf retransmit-interval x modifies the retransmission interval of the propagation LSA. Ip ospf transmit-delay x sets the transmission delay. Valid locally.