Vyatta Network OS Documentation

Learn how to install, configure and operate the Vyatta NOS, which helps drive our virtual networking & physical platforms portfolio.

protocols ospf area <area-id> shortcut <mode>

Sets the OSPF shortcut mode for an ABR.

set protocols ospf [ process pid ] area area-id shortcut { default | disable | enable }
delete protocols ospf [ process pid ] area area-id shortcut [ default | disable | enable ]
show protocols ospf [ process pid ] area area-id shortcut

The shortcut mode is default.

process pid
Specifies the PID of an IPv4 OSPF process.
area-id
The ID of the OSPF area being configured, expressed as an IP address or a decimal value.
mode
A shortcut mode. The mode is one of the following:

default: If the ABR has an active backbone connection, the specified area is not used for shortcutting and the ABR does not set the shortcut bit (S-bit) in the router-LSA that is originated for the area. If the ABR does not have a backbone connection, the area is always used for shortcutting and the ABR sets the S-bit in the router-LSA for that area.

disable: The ABR does not use the specified area for shortcutting and does not set the S-bit in the router-LSA that is originated for the area.

enable: If the ABR has an active backbone connection, the ABR sets the S-bit in the router-LSA and the specified area is used for shortcutting provided that all other ABRs seen through this area also report the S-bit. If the ABR does not have a backbone connection, the ABR unconditionally uses the area for shortcutting and sets the S-bit in the router-LSA that is originated for the area.

Configuration mode

protocols {
       ospf {
               process pid {
                      area area-id {
                              shortcut {
                                     default 
                                     disable 
                                     enable 
                      }
               }
       }
}

Use this command to set the OSPF shortcut mode for an area border router (ABR), according to the standard that is described in draft-ietf-ospf-shortcut-abr-02.txt. This command may be used only with an ABR.

Use the set form of this command to set the OSPF shortcut mode for an ABR.

Use the delete form of this command to remove the OSPF shortcut mode for an ABR.

Use the show form of this command to display the OSPF shortcut mode for an ABR.