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Home Documentation Junos OS Junos CLI Reference CLI Reference N

Junos CLI Reference

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Junos CLI Reference
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nssa

date_range 20-Nov-23
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Syntax

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nssa {
    area-range network/mask-length <restrict> <exact> <override-metric metric>;
    default-lsa {
        default-metric metric;
        metric-type type;
        type-7;
    }
    (no-summaries | summaries);
}

Hierarchy Level

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[edit logical-systems logical-system-name protocols (ospf | ospf3) area area-id],
[edit logical-systems logical-system-name protocols ospf3 realm (ipv4-unicast | ipv4-multicast | ipv6-multicast)],
[edit logical-systems logical-system-name routing-instances routing-instance-name protocols (ospf | ospf3) area area-id],
[edit logical-systems logical-system-name routing-instances routing-instance-name protocols ospf3 realm (ipv4-unicast | ipv4-multicast | ipv6-multicast)],
[edit protocols (ospf | ospf3) area area-id],
[edit protocols ospf3 realm (ipv4-unicast | ipv4-multicast | ipv6-multicast)],
[edit routing-instances routing-instance-name protocols (ospf | ospf3) area area-id],
[edit routing-instances routing-instance-name protocols ospf3 realm (ipv4-unicast | ipv4-multicast | ipv6-multicast)]

Description

Configure a not-so-stubby area (NSSA). An NSSA allows external routes to be flooded within the area. These routes are then leaked into other areas.

You cannot configure an area as being both a stub area and an NSSA.

The remaining statements are explained separately. See CLI Explorer.

Options

summaries | no-summaries

Configure whether or not area border routers advertise summary routes into an not-so-stubby area (NSSA):

  • summaries—Flood summary link-state advertisements (LSAs) into the NSSA.

  • no-summaries—Prevent area border routers from advertising summaries into an NSSA. If default-metric is configured for an NSSA, a Type 3 LSA is injected into the area by default.

Required Privilege Level

routing—To view this statement in the configuration.

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

Release Information

Statement introduced before Junos OS Release 7.4.

Support for the realm statement introduced in Junos OS Release 9.2.

Support for the realm statement introduced in Junos OS Release 9.2 for EX Series switches.

Related Documentation

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