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backup-spf-options

Syntax

backup-spf options {disable;downstream-paths-only;no-install;}

Hierarchy Level

[edit protocols (ospf | ospf3)],[edit logical-systems logical-system-name protocols (ospf | ospf3)],[edit routing-instances routing-instance-name protocols (ospf | ospf3)],[edit logical-systems logical-system-name routing-instances routing-instance-name protocols (ospf | ospf3)],[edit protocols ospf topology (default | name)],[edit logical-systems logical-system-name protocols ospf topology (default | name)],[edit routing-instances routing-instance-name protocols ospf topology (default | name)],[edit logical-systems logical-system-name routing-instances routing-instance-name protocols ospf topology (default | name)];[edit protocols ospf3 realm ipv4-unicast],[edit logical-systems logical-system-name protocols ospf3 realm ipv4-unicast],[edit routing-instances routing-instance-name protocols ospf3 realm ipv4-unicast],[edit logical-systems logical-system-name routing-instances routing-instance-name protocols ospf3 realm ipv4-unicast]

Release Information

Statement introduced in Junos OS Release 10.0.

Statement introduced in Junos OS Release 11.3 for the QFX Series.

Description

Configure options for running the shortest-path-first (SPF) algorithm for backup next hops for protected OSPF interfaces. Use these options to override the default behavior of having Junos OS calculate backup paths for all the topologies in an OSPF instance when at least one OSPF interface is configured with link protection or node-link protection. These options also enable you to change the default behavior for a specific topology in an OSPF instance.

Options

disable—Do not calculate backup next hops for the specified OSPF instance or topology.

downstream-paths-only—Calculate and install only downstream paths as defined in RFC 5286, Basic Specification for IP Fast Reroute: Loop-Free Alternates for the specified OSPF instance or topology.

no-install—Do not install the backup next hops for the specified OSPF instance or topology.

Required Privilege Level

routing—To view this statement in the configuration.

routing-control-level—To add this statement to the configuration.

 

Related Documentation

 

Published: 2014-05-08

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