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OSPF Configuration Guidelines

To configure Open Shortest Path First version 2 (OSPF), you include the following statements: 

protocols {

    ospf { 

        disable; 

        export [  policy-names  ];

        external-preference preference ;

        graceful-restart {

            disable;

            helper-disable;

            notify-duration seconds;

            restart-duration seconds;

        }

        overload { 

            <timeout seconds> ;

        } 

        preference preference ;

        prefix-export-limit;

        rib-group group-name ; 

        reference-bandwidth reference-bandwidth ; 

        spf-delay;

        traffic-engineering {

            no-topology;

            shortcuts {

                lsp-metric-into-summary;

            }

        }

        traceoptions {

            file name <replace> <size size> <files number > <no-stamp> 

                <(world-readable | no-world-readable)>;

            flag flag <flag-modifier > <disable>; 

        }

        area area-id {

            area-range network/mask-length <restrict>;

            authentication-type authentication ; 

            interface interface-name {

                disable;

                authentication-key key <key-id identifier >;

                bfd-liveness-detection {

                    minimum-interval milliseconds;

                    minimum-receive-interval milliseconds;

                    minimum-transmit-interval milliseconds;

                    multiplier number;

                }

                dead-interval seconds ;

                hello-interval seconds ;

                interface-type type ;

                metric metric ;

                neighbor address <eligible>;

                passive;

                poll-interval seconds ;

                priority number ;

                retransmit-interval seconds ;

                transit-delay seconds ;

            }

            label-switched-path name metric metric ;

            nssa {

                area-range network/mask-length <restrict>;

                default-lsa {

                    default-metric metric;

                    metric-type type;

                    type-7;

                }

                (no-summaries | summaries);

            }

            peer-interface interface-name {

                disable;

                dead-interval seconds ;

                hello-interval seconds ;

                retransmit-interval seconds ;

                transit-delay seconds ;

            }

            sham-link {

                local-endpoint address;

                remote-endpoint address {

                    metric metric;

                }

            }

            stub <default-metric metric > <summaries | no-summaries>;

            virtual-link neighbor-id router-id transit-area area-id {

                disable;

                authentication-key key <key-id identifier>;

                dead-interval seconds ;

                hello-interval seconds ;

                retransmit-interval seconds ;

                transit-delay seconds ;

            }

        }

    }

}

For a list of hierarchy levels at which you can configure these statements, see the statement summary sections for these statements.

To configure OSPF version 3 (OSPFv3), you include the following statements:

protocols {

    ospf3 { 

        disable; 

        export [  policy-names  ];

        external-preference preference ;

        graceful-restart {

            disable;

            helper-disable;

            notify-duration seconds;

            restart-duration seconds;

        }

        overload { 

            <timeout seconds> ;

        } 

        preference preference ;

        prefix-export-limit;

        reference-bandwidth reference-bandwidth ; 

        rib-group group-name ; 

        spf-delay;

        traceoptions {

            file name <replace> <size size> <files number > <no-stamp> 

                <(world-readable | no-world-readable)>;

            flag flag <flag-modifier > <disable>; 

        }

        area area-id {

            area-range network/mask-length <restrict>;

            interface interface-name {

                disable;

                dead-interval seconds ;

                hello-interval seconds ;

                metric metric ;

                passive;

                priority number ;

                retransmit-interval seconds ;

                transit-delay seconds ;

            }

            nssa {

                area-range network/mask-length <restrict>;

                default-lsa {

                    default-metric metric;

                    metric-type type;

                    type-7;

                }

                (no-summaries | summaries);

            }

            stub <default-metric metric > <summaries | no-summaries>;

            virtual-link neighbor-id router-id transit-area area-id {

                disable;

                dead-interval seconds ;

                hello-interval seconds ;

                retransmit-interval seconds ;

                transit-delay seconds ;

            }

        }

    }

}

For a list of hierarchy levels at which you can configure these statements, see the statement summary sections for these statements.

By default, OSPFv2 and OSPFv3 are disabled.

NOTE: In this manual, the term OSPF refers to both OSPFv2 and OSPFv3.

This chapter describes the following tasks for configuring OSPF:

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