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no-ipv4-routing

 

Syntax

Hierarchy Level

Release Information

Statement introduced before Junos OS Release 7.4.

Statement introduced in Junos OS Release 9.0 for EX Series switches.

Statement introduced in Junos OS Release 12.1 for the QFX Series.

Statement introduced in Junos OS Release 14.1X53-D20 for the OCX Series.

Description

Disable IP version 4 (IPv4) routing.

Disabling IPv4 routing has the following results:

  • The routing device does not advertise the network layer protocol identifier (NLPID) for IPv4 in the Junos OS link-state PDU fragment zero.

  • The routing device does not advertise any IPv4 prefixes in Junos OS link-state PDUs.

  • The routing device does not advertise the NLPID for IPv4 in Junos OS hello packets.

  • The routing device does not advertise any IPv4 addresses in Junos OS hello packets.

  • The routing device does not calculate any IPv4 routes.

Note

Note: Even when no-ipv4-routing is configured, an IS-IS traceoptions log can list rejected IPv4 addresses. When a configuration is committed, IS-IS schedules a scan of the routing table to determine whether any routes need to be exported into the IS-IS link state database. The implicit default export policy action is to reject everything. IPv4 addresses from the routing table are examined for export, rejected by the default policy, and the rejections are logged.

Required Privilege Level

routing—To view this statement in the configuration.

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