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NE20E-S2 V800R010C10SPC500 Feature Description - System Monitor 01

This is NE20E-S2 V800R010C10SPC500 Feature Description - System Monitor
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Comparison Between TWAMP Light and TWAMP

Comparison Between TWAMP Light and TWAMP

Communication Models

The Two-Way Active Measurement Protocol (TWAMP) measures the round-trip performance of an IP network and has two versions: standard version and light version (TWAMP Light).

TWAMP uses the client/server model and defines four logical entities:

  • Control-Client: establishes, starts, and stops a test session and collects statistics.
  • Session-Sender: sends probes for performance statistics after being notified by the Control-Client.
  • Server: responds to the Control-Client's request for establishing, starting, or stopping a test session.
  • Session-Reflector: replies to the probes sent by the Session-Sender with response probes after being notified by the server.
Figure 8-2 TWAMP architecture
Figure 8-3 TWAMP Light architecture

To be specific, TWAMP Light only integrates the Session-Sender on the Controller and skips the process of establishing a control session. The TWAMP Light Responder functions merely as the Session-Reflector.

Therefore, TWAMP Light simplifies the communication model of TWAMP and greatly relaxes its requirements on the Responder performance, allowing the Responder to be rapidly deployed. In addition, TWAMP Light supports plug-and-play.

The Controller and Responder function as follows:

  • Controller: sends and receives packets over a test session, collects and calculates performance statistics, and reports the statistics to the NMS.
  • Responder: responds to the packets received over a test session.

Different from TWAMP, TWAMP Light has parameters statically configured for a test session. You can configure the IP address and UDP port number on the Responder using MIBs. After a test session is created, TWAMP-Test packets are transmitted over the test session to help calculate the performance statistics, such as the packet loss rate, delay, and jitter. Therefore, TWAMP Light does not need any control protocol for parameter negotiation. TWAMP Light simplifies the working process of protocols and is easier to deploy in real world situations.

Updated: 2019-01-02

Document ID: EDOC1100055478

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