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Hierarchy Level


For IPFIX flows, an identifier of an observation domain is locally unique to an exporting process of the templates. The export process uses the observation domain ID to uniquely identify to the collection process in which the flows were metered. We recommend that you configure this ID to be unique for each IPFIX flow. A value of 0 indicates that no specific observation domain is identified by this information element. The ID configured here is contained within Information Element 149.

MX and QFX Series: Typically, this attribute is used to limit the scope of other information elements. If the observation domain is not unique, the collector cannot uniquely identify an IPFIX device. If you configure the same observation domain ID for different template types, such as for IPv4 and IPv6, it does not impact flow monitoring because the actual or the base observation domain ID is transmitted in the flow. The actual observation domain ID is derived from the value you configure and plus other parameters such as the slot number, lookup chip (LU) instance, and Packet Forwarding Engine instance. Such a method of computation of the observation domain ID ensures that this ID is not the same for two IPFIX devices.

PTX Series: When you configure the observation domain ID, the software attaches the ID to a particular template type. If you configure the same observation domain ID for two different template types, such as for IPv4 and IPv6, this does not impact flow monitoring, because the configured ID is not what is being sent. The value sent in the packets is derived from that configured value and the FPC slot value. This method ensures two IPFIX devices can never have the same value of observation domain ID.


domain-id—Identifier for the observation domain for IPFIX flows.

  • Range: 0 through 255

Required Privilege Level

system—To view this statement in the configuration.

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

Release Information

Statement introduced in Junos OS Release 14.1.

Statement introduced in Junos OS Evolved 22.4R1.