Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?


Configure MEP Interfaces on Switches to Support Ethernet Frame Delay Measurements (CLI Procedure)

Ethernet frame delay measurement is a useful tool for providing performance statistics or supporting or challenging service-level agreements (SLAs). By default, Ethernet frame delay measurement uses software for timestamping and delay calculations. You can configure an EX Series switch to perform and display Ethernet frame delay measurements on Ethernet interfaces. The switches support software-assisted timestamping.

Before you can begin configuring MEP interfaces to support Ethernet frame delay measurements on switches, ensure that you have:

  • Configured Operation, Administration, and Maintenance (OAM) connectivity fault management (CFM) correctly

  • Enabled distributed periodic packet management (PPM) (distributed PPM is enabled by default)

To configure MEP interfaces on switches to support Ethernet frame delay measurements:

Enable the Ethernet frame delay measurement by issuing the monitor ethernet delay-measurement operational mode command. In this command, you must specify one measurement type (either one-way or two-way measurement), and you must specify either the unicast MAC address of the peer MEP or its numeric identifier.

Optionally, you can also specify the following parameters:

  • Number of frames to send to the peer MEP (count count)

  • Number of seconds to wait between sending frames (wait time)

  • Priority value of the delay measurement request frame (priority value)

  • Size of the data in the data TLV of the request packet (size value)

  • Suppression of the insertion of the session ID TLV in the request packet (no-session-id-tlv)