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  • STAMP and changes to TWAMP support (ACX7024, ACX7024X, ACX7100, ACX7509, PTX10001-36MR, PTX10003, PTX10004, PTX10008, and PTX10016)—Starting in Junos OS Evolved Release 23.4R1, we support RFC 8762, Simple Two-Way Active Measurement Protocol (STAMP). RFC 8762 standardizes and expands upon the TWAMP Light operational mode, which was defined in Appendix I of RFC 5357, Two-Way Active Measurement Protocol (TWAMP). A STAMP-compliant reflector ensures symmetric payload size (in accordance with RFC 6038) and operates in either stateless or stateful mode, depending on whether the sequence number in the reflected payload is copied from the client frame or generated independently. A stateful reflector can detect in which direction drops have occurred. In previous releases, we supported symmetric payloads and stateless reflection. With this release, we support stateful reflection, full compliance with the STAMP standard, and unidirectional drop values for clients. We support unidirectional drop values not only for STAMP clients, but also for TWAMP Managed-mode clients.

    [See Understand Two-Way Active Measurement Protocol and twamp.]