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NE40E V800R010C00 Configuration Guide - System Monitor 01

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TWAMP Light, as a light version of the Two-Way Active Measurement Protocol (TWAMP), simplifies the control protocol used to establish test sessions and measures the round-trip performance of an IP network.


TWAMP is an IP performance monitoring (IPPM) protocol and has two versions: standard version and light version. Different from standard TWAMP, TWAMP Light moves the control plane from the Responder to the Controller so that TWAMP control modules can be simply deployed on the Controller. Therefore, TWAMP Light greatly relaxes its requirements on the Responder performance, allowing the Responder to be rapidly deployed..


TWAMP Light deploys the Session-Sender on the Controller, and deploys the Session-Reflector on the Responder.

The Controller creates test sessions, collects performance statistics, and reports statistics to the NMS using Performance Management (PM) or MIBs. After that, the Controller parses NMS information and sends the results to the Responder through private channels. The Responder merely responds to TWAMP-Test packets received over test sessions.


Figure 8-1  TWAMP Light models

In Figure 8-1, TWAMP-Test packets function as probes and carry the IP address and UDP port that are predefined for the test session between the Controller and Responder. The Controller sends a TWAMP-Test packet to the Responder, and the Responder replies to it. The Controller collects TWAMP statistics.

TWAMP Light defines two types of TWAMP-Test packets: Test-request packets and Test-response packets.
  • Test-request packets are sent from the Controller to the Responder.
  • Test-response packets are replied by the Responder to the Controller.

The Controller collects performance statistics based on TWAMP-Test packets and reports results to the NMS. The NMS provides performance statistics for users.

Updated: 2018-07-12

Document ID: EDOC1100028538

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