TWAMP Overview
  • 30 May 2024
  • 2 Minutes to read
  • Contributors
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TWAMP Overview

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Article summary

TWAMP (Two-Way Active Measurement Protocol) is a network performance measurement protocol that provides two-way or round-trip measurements rather than simply unidirectional capabilities. It is used to measure network performance between two units in a network in order to check Service Level Agreement (SLA) assurance and provide SLA related metrics.

TWAMP is supported as a Session-Sender and as a Session-Reflector. TWAMP metric types are collected by the Telemetry.

Assurance Sensor F100 and F25 TWAMP:

  • Is manageable via CLI (Command-Line Interface), SNMP (Simple Network Management Protocol), and NETCONF (Network Configuration Protocol) and is compatible with both IPv4 and IPv6 protocols
  • Supports up to 1,000 OE-SVI (Offload Engine Switch Virtual Interface) sessions. An OE-SVI is an abstract object and is used to associate a network interface to an underlying Ethernet Service. It typically contains the following parameters:
    • Ethernet interfaces or Port-Channels
    • IP address (IPv4 and/or IPv6)
    • Netmask and/or Prefix Length
    • Default Gateway and/or Next-Hop address
    • Route
    • A reference to the underlying Layer 2 domain
  • Manages up to 256 static routes
  • Can handle up to 6,000 TWAMP sender sessions
  • Manages up to 6,000 TWAMP reflector sessions
  • Supports periodic intervals of 10 ms, 20 ms, 33 ms, 50 ms, 100 ms, and 1000 ms
  • Can achieve an aggregate rate of 60,000 packets per second (PPS) when configured with a padding length above the minimum size

Additionally:

  • TWAMP Sender can reach an aggregate rate of 600,000 packets per second (PPS) when all sessions use a padding length equal to the minimum size
  • TWAMP Telemetry measures intervals of 60 seconds, 300 seconds, 600 seconds, 900 seconds, or 3600 seconds
  • OE-SVI can be simultaneously configured with both IPv4 and IPv6 addresses

TWAMP Acronyms

This table lists acronyms related to TWAMP:

AcronymExpansion
CLICommand Line Interface
CNPCustomer Network Port
CoSClass of Service
DEIDrop Eligibility Indicator
DSCPDifferentiated Services Code Point
EMSElement Management System
IETFInternet Engineering Task Force
IPInternet Protocol
IPv4Internet Protocol version 4
IPv6Internet Protocol version 6
L3Layer 3 (signalling network functions)
MEFMetro Ethernet Forum
MIBManagement Information Base
MSRMIB Save & Restore
msmillisecond
NDPIPv6 Neighbor Discovery Protocol
NFRNon-Functional Requirement
OEOffload Engine
OE-SVIOffload Engine Switch Virtual Interface
OWAMPOne-Way Active Measurement Protocol
PCPPriority Code Point
PEBProvider Edge Bridge
PMPerformance Monitoring
PNPProvider Network Port
PPSPackets per Second
SLAService Level Agreement
SVISwitch Virtual Interface
TPIDTag Protocol Identifier
TTLTime-to-live
TWAMPTwo-Way Active Measurement Protocol
UDPUser Datagram Protocol
VIDVLAN Identifier
VLANVirtual Local Area Network

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