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Junos OS Hierarchy Levels

Junos OS Evolved Hierarchy Level


Specify the size of the data portion of ICMP probes. The data-size statement is not valid with the http-get or http-metadata-get probe type.


size—0 through 65400 for RPM, for TWAMP the value is from 60 through 1400.

  • Default: 0 for RPM and 60 for TWAMP.


If you configure the hardware timestamp feature (see Configuring RPM Timestamping on MX, M, T, and PTX Series Routers and EX Series Switches):

  • The default value of data-size is 32 bytes and 32 is the minimum value for explicit configuration. The UDP timestamp probe type is an exception; it requires a minimum data size of 52 bytes.

  • The data size must be at least 100 bytes smaller than the default MTU of the interface of the RPM client interface.

Required Privilege Level

system—To view this statement in the configuration.

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

Release Information

Statement introduced before Junos OS Release 7.4.

Statement introduced in Junos OS Release 9.3 for EX Series switches.

Statement introduced in Junos OS Release 13.2 for PTX Series Packet Transport routers.

Support at the [edit services rpm twamp client control-connection control-client-name] hierarchy level introduced in Junos OS Release 15.1 for MX Series routers.

Statement introduced in Junos OS Evolved Release 20.1R1.