TWAMP is a flexible method for measuring round-trip IP performance among ... FIT (is an affiliate of TAC) developed the
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TWAMP is a flexible method for measuring round-trip IP performance among any two devices in a network. It measures core and edge IP performance through cooperation between the routers and switches in the Network TWAMP connects using TCP and uses UDP packets for testing Supports IPv4 and IPv6 TWAMP defines two sets of protocols - Control Protocol ▪ Enables endpoints to negotiate
- Performance-measurement probes - Defines the packet format that is needed for measuring round-trip performance. Uses active probe packets to measure two-way delay between two end-points in IP networks - Timestamps are applied for high accuracy Typically does not requires that both end-points are time-synchronized - One-way delay measurements require sync. Additional capabilities: packet loss ratio, continuity check, one-way and two-way packet delay variation
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ICMP Echo (“Ping”): Internet Control Message Protocol (IETF RFC 792). Used for connectivity check and rough roundtrip delay estimations between any IP devices IP SLA: Proprietary Cisco method for measuring performance across router networks
TWAMP is mostly suitable for premium L3 business services (with SLA guarantees) and for LTE backhaul service assurance!
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Control-Client Initiates a TCP connection with the Server - Server indicates its willingness to communicate Client responds with the mode of communication - Server responds to accept the mode and give its start time. This completes the control connection
TWAMP is a non-proprietary method of testing IP networks. Unlike ping and traceroute TWAMP works directly with switches and routers to test network performance. No proprietary suite like TCP/IP is required to perform testing on network devices.
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TWAMP Light Reflector Built in NTP Syncronization Layer 3 Packet Loss, Jitter and Delay Measurement Very compact size Available in wide range of IP Networks Overall cost reduction FIT (is an affiliate of TAC) developed the LOOKOUTeyes™ TWAMP Module, a new class of software that integrates intelligent and innovative system functions into an LOOKOUTeyes™. IP Network Performance Measurement tools are essential for service turn-up and Service Level Assurance in IP networks. The LOOKOUTeyes™ provides operators with these tools for monitoring and troubleshooting IP services by simply replacing a conventional Network Performance Management tools with a LOOKOUTeyes™. This solution reduces system and network complexity, and offers efficiency and effectiveness while generating CAPEX & OPEX savings and providing continous improvement. The LOOKOUTeyes™ modules provide customers an easy solution for monitoring and troubleshooting using standardized protocols at various operational layers: - LOOKOUTeyes™ TWAMP Module : IP layer service monitoring using TWAMP Light according to RFC5357 - LOOKOUTeyes™ IPSLA Module : IP layer service monitoring (availability, packetloss, jitter, delay) using its own propriety method designed to support ITU-T Y.1540-41 and based on Realtime Jitter calculation as described in RFC 1889
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LOOKOUTeyes™ TWAMP Responder
LOOKOUTeyes™ Enterprise Server
LOOKOUTeyes™ TWAMP Responder
LOOKOUTeyes™ Local Server TWAMP Controller
L3 Performance Monitoring with TWAMP
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Capability
Original purpose
Monitoring existing infrastructure
TWAMP
LOOKOUTeyes™ TWAMP Module
LOOKOUTeyes™ IPSLA Module
Performance monitoring across IP networks
based on TWAMP Performance monitoring across IP networks
based on ICMP echo (Ping) Connectivity check, Basic round-trip delay capability
Available in certain routers, NIDs or probes
Available in certain routers, NIDs or probes
Yes(Widely supported in every NE and Operating systems)
Yes(Widely supported in every NE and Operating systems)
Transparency through Yes network elements (test based on UDP traffic allowing generic, which passes through robust, predictable test network) methodology Round trip Delay KPI
Yes
1-way Loss KPI
Yes
1-way delay KPI
Yes
1-way delay variation (PDV) KPI
Yes
Yes In some cases routers block or In some cases routers block or rate (test based on UDP traffic which passes rate limit ICMP limit ICMP through network) LOOKOUTeyes™ propriety LOOKOUTeyes™ propriety method method enhances test enhances test methodologyby dynamic methodologyby dynamic configuration configuration Insufficient accuracy due to slow ICMP Insufficient accuracy due to slow Insufficient accuracy due to slow processing in network elements ICMP processing in network ICMP processing in network elements elements LOOKOUTeyes™ propriety method LOOKOUTeyes™ propriety provides Round trip Delay KPI with time method provides Round trip Delay synced accuracy KPI No LOOKOUTeyes™ propriety method LOOKOUTeyes™ propriety provides 1-way Loss KPI with time method provides 1-way Loss KPI synced accuracy No LOOKOUTeyes™ propriety method LOOKOUTeyes™ propriety provides 1-way delay KPI with time method provides 1-way delay KPI synced accuracy
LOOKOUTeyes™ propriety method provides 1-way delay variation KPI with time synced accuracy
