Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?


jflow-log (Services)


Hierarchy Level


Enable the mechanism to record logging messages in flow monitoring format for NAT events. For this transmission of flow monitoring logs to work properly, the services PIC interface must have an IP address and appropriate logging options configured.

You can configure MX Series routers with MS-MPCs and MS-MICs to log network address translation (NAT) events using the Junos Traffic Vision (previously known as Jflow) version 9 or IPFIX (version 10) template format. This method of generating flow monitoring records for NAT events, such as NAT44 and NAT64 session creation and deletion, and NAT44 and NAT64 binding information base events, enables cohesive and streamlined analysis of NAT traffic and troubleshooting of NAT-related problems.

Required Privilege Level

interface—To view this statement in the configuration.

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

Release Information

Statement introduced in Junos OS Release 14.2R2.