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QoS monitoring and SLS auditing

QoS monitoring and SLS auditing. TNC-2002 , Limerick J une 4 th , 200 2 Victor Reijs victor.reijs@heanet.ie. Outline. Q oS/SLS monitoring/auditing... Measurement infrastructure… Questions. Which QoS. Application based SLS metric. Available bandwidth (avail-bw)

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QoS monitoring and SLS auditing

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  1. QoS monitoring and SLS auditing TNC-2002, Limerick June4th, 2002 Victor Reijs victor.reijs@heanet.ie QoS monitoring and SLS auditing

  2. Outline • QoS/SLS monitoring/auditing... • Measurement infrastructure… • Questions... QoS monitoring and SLS auditing

  3. Which QoS QoS monitoring and SLS auditing

  4. Application based SLSmetric • Available bandwidth (avail-bw) • link capacity, routing • One-way packet loss (OWPL) • One-way loss pattern • faults, congestion • IP packet delay variation (ipdv) • congestion • One-way delay (OWD) • access protocol, routing and distance QoS monitoring and SLS auditing

  5. Maximum packet loss • Video (MPEG-2) • 10-5 to 10-3 (with FEC) • File transfer (FTP) • 10-6 (2 MByte buffer) to 10-3 (64 kByte buffer) • Voice (G.711, G.729) • 10-2 to 10-1 (with FEC/PLC) QoS monitoring and SLS auditing

  6. Tools for SLS metric • Available bandwidth (-) • SLoPS, (MRTG’s in path) • One-way packet loss (RFC 2680) • RIPE TTM, (RUDE/CRUDE), etc. • One-way loss pattern (Internet-Draft) • Chariot VoIP • IP packet delay variation (Internet-Draft) • Chariot VoIP, MBone conf. Applications, (RIPE TTM), etc. • One-way delay (RFC 2679) • RIPE TTM, IPMP, NTP-based?, etc. QoS monitoring and SLS auditing

  7. Tools for composite metric • Audio Mean Opinion Score • ITU standards: P.800 and G.107 • Chariot (active), VQmon (passive) • Video Mean Opinion Score • no standard yet • no tools related to networks yet • Other composite tools like for GRID’s, etc. QoS monitoring and SLS auditing

  8. Specification of measurement infrastructure (1) • Flexible platform • For end-users and network managers • Different operating systems • Different measurements • Active and passive measurements • Upgradeable • Support the moving and evolving environment QoS monitoring and SLS auditing

  9. Specification of measurement infrastructure (2) • Secure access to infrastructure • Multiple network management domains • Trustable and exchangeable results • resource management • standardized protocol/methodology QoS monitoring and SLS auditing

  10. Measurement infrastructure QoS monitoring and SLS auditing

  11. More information • TF-NGN meeting: July 1st and 2nd in Berlin • http://www.dante.net/tf-ngn • victor.reijs@heanet.ie QoS monitoring and SLS auditing

  12. Abbreviations avail-bw Available Bandwidth FEC Forward Error Correction ipdv IP packet Delay Variation OWD One-Way delay OWPL One-Way Packet Loss PLC Packet Loss Concealment QoS Quality Of Service SLoPS Self-LOading Periodic Streams SLS Service Level Specification QoS monitoring and SLS auditing

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