Twamp Test Session End And Pm Retrieval; Twamp Configuration On The Ncte; Configuration Steps - ADTRAN Total Access 5000 Deployment Manual

Total Access 5000 Business Services Deployment Guide

TWAMP Test Session End and PM Retrieval

The official end of the active TWAMP test session phase is declared when the sender sends a
ʺstop‐sessionsʺ control message. This is the same message and format as OWAMP with the
following exceptions:
• The next seqno must be set to zero
• The number of skip ranges must be set to 0.
• The message must not contain any session descriptor records or skip ranges.
TWAMP does not use the fetch‐session command used in OWAMP and does not rely upon
any metrics collected at the session‐reflector. All PM statistics are collected at the session‐
sender.

TWAMP Configuration on the NCTE

Configuring TWAMP on the NCTE involves the following steps:
• Optionally changing the maximum number of sessions allowed at the TWAMP responder
• Enabling the TWAMP responder
A 1:1 test‐session to control‐session relationship is supported. Once TWAMP is configured, it
is possible to view its current status.

Configuration Steps

To configure the maximum number of sessions and to enable the TWAMP responder,
complete the following steps:
1. From the Global Configuration prompt, type probe responder twamp and press E
2. From the TWAMP Responder Configuration prompt, type max-sessions <1-n> , then
3. From the TWAMP Responder Configuration prompt, type control source-port
4. From the TWAMP Responder Configuration prompt, type test timeout <1-65535> ,
D-4
– Optionally changing the test session timeout default
– Optionally changing the control session timeout default
– Optionally changing the control session TCP port
to access the TWAMP Responder Configuration prompt.
press E
NTER to set the number of maximum TWAMP sessions allowed at the NCTE.
The default value is 6.
, and press E
<port_val>
The default value is 862.
then press E
NTER to set the test session responder timeout in seconds.
The NCTE test session timeout is the amount of time during an active TWAMP test
session that the NCTE will wait on another test session packet before timing out and
closing the test session portion of the TWAMP protocol. The test session phase uses the
UDP protocol.
to set the source control TCP port to port_val.
NTER
NTER
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