ip ospf area virtual-link (for a
      VRF)
   
   
      Enables or disables the automatic creation of virtual links.
    
      Syntax
         
         
            - 
               
                  default ip ospf area
                     virtual-link {A.B.C.D} {A.B.C.D}
                
- 
               
                  default ip ospf area
                     virtual-link {A.B.C.D} {A.B.C.D} authentication-type
                
- 
               
                  default ip ospf area
                     virtual-link {A.B.C.D} {A.B.C.D} dead-interval
                
- 
               
                  default ip ospf area
                     virtual-link {A.B.C.D} {A.B.C.D} hello-interval
                
- 
               
                  default ip ospf area
                     virtual-link {A.B.C.D} {A.B.C.D} primary-md5-key
                
- 
               
                  default ip ospf area
                     virtual-link {A.B.C.D} {A.B.C.D} retransmit-interval
                
- 
               
                  default ip ospf area
                     virtual-link {A.B.C.D} {A.B.C.D} transit-delay
                
- 
               
                  ip ospf area virtual-link
                     {A.B.C.D} {A.B.C.D}
                
- 
               
                  ip ospf area virtual-link
                     {A.B.C.D} {A.B.C.D} authentication-key WORD<0-8>
                
- 
               
                  ip ospf area virtual-link
                     {A.B.C.D} {A.B.C.D} authentication-type message-digest
                
- 
               
                  ip ospf area virtual-link
                     {A.B.C.D} {A.B.C.D} authentication-type none
                
- 
               
                  ip ospf area virtual-link
                     {A.B.C.D} {A.B.C.D} authentication-type simple
                
- 
               
                  ip ospf area virtual-link
                     {A.B.C.D} {A.B.C.D} dead-interval <0-2147483647>
                
- 
               
                  ip ospf area virtual-link
                     {A.B.C.D} {A.B.C.D} hello-interval <1-65535>
                
- 
               
                  ip ospf area virtual-link
                     {A.B.C.D} {A.B.C.D} primary-md5-key <1-255>
                
- 
               
                  ip ospf area virtual-link
                     {A.B.C.D} {A.B.C.D} retransmit-interval <0-3600>
                
- 
               
                  ip ospf area virtual-link
                     {A.B.C.D} {A.B.C.D} transit-delay <0-3600>
                
- 
               
                  no ip ospf area
                     virtual-link {A.B.C.D} {A.B.C.D}
                
Command Parameters
         
         
            
               - <A.B.C.D> <A.B.C.D>
- Creates a virtual interface area
                  identifier. <A.B.C.D> <A.B.C.D> specify the area ID and the virtual
                  interface ID, respectively.
- authentication-key WORD<0-8>
- Configures the authentication key
                  of up to eight characters.
- authentication-type <none|simple|messagedigest>
- authenticationtype is: none,
                  simple password, or MD5 authentication. If simple, all OSPF updates received by
                  the interface must contain the authentication key specified by the area
                  authentication-key command. If MD5, they must contain the MD5 key. The default is
                  none.
- dead-interval <0-2147483647>
- Configures the dead interval, in
                  seconds, for the virtual interface, the number of seconds that a router Hello
                  packets are not seen before its neighbors declare the router down. This value must
                  be at least four times the Hello interval value. The default is 60.
- hello-interval <1-65535>
- Configures the Hello interval, in
                  seconds, on the virtual interface for the length of time (in seconds) between the
                  Hello packets that the router sends on the interface. The default is 10.
- primary-md5-key <1-255>
- Changes the primary key used to
                  encrypt outgoing packets. <1-255> is the ID for the message digest key.
- retransmit-interval <0- 3600>
- Configures the retransmit interval
                  for the virtual interface, the number of seconds between link-state advertisement
                  retransmissions. The range is from 0 to 3600.
- transit-delay <0-3600>
- Configures the transit delay for
                  the virtual interface, the estimated number of seconds required to transmit a
                  link-state update over the interface. The range is from 0 to 3600.
Command Mode
         
         VRF Router Configuration