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Supporting CQM/SLA on Leased Line and IP/VPN Services

Supporting CQM/SLA on Leased Line and IP/VPN Services. QoS Team Telecommunication Laboratories Chunghua Telecom Co., Ltd Email: { weafon,denny,gary,hclee}@cht.com.tw http://www.cht.com.tw. Supporting SLA. Customer. Customer Interface Management. Perf. Complaints/ Inquiries.

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Supporting CQM/SLA on Leased Line and IP/VPN Services

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  1. SupportingCQM/SLAon Leased Line and IP/VPN Services QoS Team Telecommunication Laboratories Chunghua Telecom Co., Ltd Email: { weafon,denny,gary,hclee}@cht.com.tw http://www.cht.com.tw

  2. Supporting SLA Customer Customer Interface Management Perf. Complaints/Inquiries Inquiry Responses, Scheduled Report Notifications Requirement Report Order Handling Sales Customer QoS/SLA Management Problem Report Report ProblemHandling ProblemHandling • Receive perf. data • Establish customer report • Manage SLA perf. • Determine violation info. SLA Violations Impacted ServicePerformance ServiceProblem Handling ServiceQuality Management For QoS report SLA Violation Network Perf. and Configuration Data Rating and Discounting • Service Class Quality Data • QoS Violation Notification • Service Problem Report • Availability Notification Network DataManagement Planed Maintenance ServiceQuality Management New Development Network Maintenance and Restoration Upgrade Required Connecting Required

  3. Tuning the Leased Line Network • Simple • Unitary DXC 4/1 SDH SDH SDH Network SHDSL SHDSL FE1 DSU FE1 DSU DXC 4/1 DXC 4/1 768 Kbps Edge Network Core Network Edge Network DCS 1/0 512 Kbps SDH SDH SHDSL SHDSL SDH Network FE1 DSU FE1 DSU DCS 1/0 DCS 1/0 E1 MUX E1 MUX

  4. DCS1/0 CHT - NET DCS DCS Collect Leased Line QoS data From Provider Side CQM/SLA System Network provisioning data OPTIMA LEAMIS PAMS DOSS SNIMS (SDH/DWDM) NM Layer TSNC/ LANMACS DCS SDH SDH Network MD MD ADM ADM DXC D4 D4 D4 M13 M13 Network Component Layer HDSL DSU Tester HDSL

  5. DSU DSU Hub Router Router DSU DSU Hub Router Router Collect Leased Line QoS data From Customer Side xx xx Branch High-speed Leased line network IT center of A company DSU DSU T1/E1 T1/E1 Hub Hub Router Router Desktop FT1/FE1 DSU FT1/FE1 DSU 桌上型 T1/E1 T1/E1 xx xx Branch . . Async Async . Server . Server . . Shelf-TypeFT1/FE1 DSU FT1/FE1 DSU 機架型 . . DSU DSU . . T1/E1 T1/E1 Hub Hub Router Router DSLAM DSLAM ATU ATU - - R R ATM ATM . . … … . . Network 網路 . . . . 512/64 512/64 IP IP - - VPN VPN T3 T3 OANet CHTNet Leased line B company, C company… Firewall Firewall Rinpoche Server Server Network Management Center CQM/SLA System

  6. RINPOCHE RINPOCHE RINPOCHE CPE A3 Router VR VCG Hub ATU-R CPE A1 VR VCG VR ATU-R VCG Hub Router VR CPE A2 VR VCG VR VCG CPE B2 VCG VCG VR VCG VR VCG Router VR VR CPE B1 ADSL/ATM Based IP-VPN Network CQM/SLA System ATM Backbone network (ATM) ADSL ADSL Frame Relay Leased line

  7. DSLAM DSLAM ATU-R ATU-R ATU-R PC PC DSLAM Data Monitoring in RINPOCHE BANPS provides the full-routing information Bridge Mode ATM Network STM-1 line Loop Fiber PC Line port : 1.Current Rate 2.Usage Rate 3. ATUR_LOSS 4. ATUR_ES 5. ATUC_ES Trunk port : 1. ES 2. SES 3. UAS ATM : 1. Cell lost ratio 2. Cell error ratio 3. Severely error ratio 4. ES 5. SES 6. UAS 7. CV RINPOCHE monitors the performance parameters of every equipment

  8. Major Functions for CQM/SLA (1) Introduction of the contracts offered (2) Search interface for signed contracts (3) Search interface for the QoS data of purchased services or active notification (4) SLA violation check or active notification (1) Storage of digitized contracts (2) Retrieval and integration of the quality data in every type of service (3) SLA violations check (4) Customers data management (5) Search interface for customer data System managers Non-paid customers CQM/SLA NMSs Paid customers SQM For service provider side For customer side

  9. Major Components of CQM/SQM System customers Network managers Customer representatives CQM/SLA Contract digitize and monitor module QoS Data Account and Service management module Browse Delivery Data Storage Module SQM Data Integration Module Data Retrieve Module Provisioning System N NMSA NMS N Provisioning System A … …

  10. Information Manipulation Component • 1. Data Retrieve Module ( FTP, HTTP ) • Static Network Configuration Data • Dynamic Network Operation Data • 2. Data Integration Module ( Database ) • Cross-System Integration • 3. Data Storage Module ( Database ) • Time-Based Discard Policy

  11. Online Service Quality Report Leased Line ADSL IP-VPN (c) Average used bandwidth of all circuits (a) Circuit availability for September 2002 (b) Summary of monthly aggregated performance (d) Heavily loaded circuits

  12. Conclusion and Future Works • Put significant emphasis on QoS issues by legislation • Eliminate the equipments of obsolete circuits and Enhance the capability of NMSs • Generate customer-oriented reports and notify actively • What can satisfy the requirement of customers and gain the best margin for service providers? • Implement SLA services on other network services, such as MPLS-based and FTTB-based IP-VPN.

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