Command:

compatible rfc1583


Mode:

Router(config-router)#


Syntax:

compatible rfc1583
no compatible rfc1583

 

Syntax Description:

This command has no arguments or keywords.

 

Command Description:

To restore the method used to calculate summary route costs per RFC 1583, use the compatible rfc1583 command in router configuration mode. To disable RFC 1583 compatibility, use the no form of this command.

This command is backward compatible with Cisco IOS Release 12.0.

To minimize the chance of routing loops, all OSPF routers in an OSPF routing domain should have RFC compatibility set identically.

Because of the introduction of RFC 2328, OSPF Version 2, the method used to calculate summary route costs has changed. Use the no compatible rfc1583 command to enable the calculation method used per RFC 2328.


Example:

The following example specifies that the router process is compatible with RFC 1583:

Router(config)# router ospf 1
Router(config-router)# compatible rfc1583


Misconceptions:

None


Related Commands:

None

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