Technical Documentation



mode loose;

Hierarchy Level

[edit dynamic-profiles profile-name interfaces interface-name unit logical-unit-number family (inet) rpf-check],

Release Information

Statement introduced in JUNOS Release 9.6.


Check whether the packet has a source address with a corresponding prefix in the routing table. If a corresponding prefix is not found, unicast reverse path forwarding (RPF) loose mode does not accept the packet. Unlike strict mode, loose mode does not check whether the interface expects to receive a packet with a specific source address prefix.


If you do not include this statement, unicast RPF is in strict mode.

Required Privilege Level

interface—To view this statement in the configuration.

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

Published: 2010-04-15