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packet-size (RFC 2544 Benchmarking)


Junos OS Hierarchy Level

Junos OS Evolved Hierarchy Level


Define up to 10 packet sizes that are used sequentially for the test.



Size of the test packet. If you enter multiple packet sizes, you must separate each number with a space. You should base the test packet size on the configured MTU.

  • Range: 64 through 9136 bytes

  • Minimum Packet Sizes (Junos OS Evolved):

    • Untagged egress logical interface: 64 bytes

    • Single tagged interface: 66 bytes

    • Dual-tagged egress interface: 70 bytes

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 12.3X53.

Statement introduced in Junos OS Evolved 23.4R1.