SupportingSupporting

CQM/SLACQM/SLA on on Leased LineLeased Line and and IP/VPNIP/VPN ServicesServices

QoS TeamTelecommunication Laboratories

Chunghua Telecom Co., LtdEmail: { weafon,denny,gary,hclee}@cht.com.tw

http://www.cht.com.tw

Supporting SLASupporting SLA

Customer QoS/SLA Management

- Receive perf. data- Establish customer report- Manage SLA perf. - Determine violation info.

Customer

Perf. Complaints/Inquiries

Order Handling

Requirement Report

ProblemHandling

ServiceProblem Handling

Problem Report

Impacted ServicePerformance

ServiceQuality

Management

Network DataManagement

Network Perf. andConfiguration Data •Service Class Quality Data

•QoS Violation Notification•Service Problem Report•Availability Notification

Inquiry Responses,Scheduled ReportNotifications Sales

ProblemHandling

ServiceQuality

Management

Rating and Discounting

Report

SLA Violations

For QoS report

SLA Violation

New Development

Customer Interface Management

Upgrade Required

Connecting Required

Network Maintenanceand Restoration

Planed Maintenance

Tuning the Leased Line NetworkTuning the Leased Line Network

Simple Unitary

768 Kbps

512 Kbps SDH

SHDSL

FE1 DSU

SDH

SHDSL

FE1 DSU

SDH

SHDSL

FE1 DSU

E1 MUX

SDH

SHDSL

FE1 DSU

E1 MUX

Core Network Edge NetworkEdge Network

DXC4/1

DXC4/1

DXC4/1

DCS1/0

DCS1/0

DCS1/0

SDHNetwork

SDHNetwork

Collect Leased Line QoS data From Provider SideCollect Leased Line QoS data From Provider Side

DCS1/0

TSNC/LANMACS

SDH Network

SNIMS(SDH/DWDM)

CHT - NET

MD MD

DCS

DCS DCS

D4D4

TesterDSU

M13

HDSL

M13

HDSL

ADM ADM

DXC

SDH

NM Layer

Network Component Layer

D4

DOSS

PAMS OPTIMA LEAMIS

Network provisioning data CQM/SLA

System

CQM/SLASystem

Collect Leased Line QoS data From Customer SideCollect Leased Line QoS data From Customer SideHigh-speed Leased line network

Router

DSU

Hub

Router

DSU

Hub

…

Network Management Center

xx

xx

CHTNet

Rinpoche Server

T1/E1

....

512/64 IP-VPN

T1/E1桌上型 FT1/FE1 DSU

Async . Server

ATU -R

Firewall

DSLAM

ATM網路

T3

T1/E1機架型 FT1/FE1 DSU

....

Router

DSU

HubRouter

DSU

Router

DSU

Hub

Router

DSU

HubRouter

DSU

Router

DSU

Hub

…

xx Branch

xx

OANet

Server

T1/E1

....

IT center of A company

512/64 IP-VPNLeased line

T1/E1Desktop FT1/FE1 DSU

Async . Server

ATU -R

Firewall

DSLAM

ATMNetwork

T3

T1/E1Shelf-TypeFT1/FE1 DSU

....B company, C company…

CQM/SLASystem

CQM/SLASystem

Branch

ADSL/ATM Based IP-VPN NetworkADSL/ATM Based IP-VPN Network

Backbone network(ATM)

VCG

VRVR VCG

VR VCG

ATMCPE A1

Router

Leasedline

FrameRelayCPE A2

ATU-RHub ADSL

CPE A3

HubATU-R

ADSL

CPE B1

Router

CPE B2

Router

VR

VCG

VCGVR

VR

VCG

VR VCG

VCG VR

VR

VR VCG

RINPOCHERINPOCHERINPOCHERINPOCHE

RINPOCHERINPOCHE

CQM/SLASystem

CQM/SLASystem

Data Monitoring in RINPOCHEData Monitoring in RINPOCHE

Bridge Mode

ATM Network

DSLAMDSLAMATU-RATU-RPC

STM-1

Fiber

line

Loop

Line port :1.Current Rate2.Usage Rate3. ATUR_LOSS 4. ATUR_ES5. ATUC_ES

Trunk port :1. ES2. SES3. UAS

ATM :1. Cell lost ratio2. Cell error ratio3. Severely error ratio4. ES5. SES6. UAS7. CV

RINPOCHE monitors the performance parameters of every equipment

BANPS provides the full-routing information

ATU-RATU-RPC

DSLAMDSLAM

ATU-RATU-RPC

DSLAMDSLAM

Major Functions for CQM/SLAMajor Functions for CQM/SLA

CQM/SLA

Paid customers

Non-paid customers

NMSs

System managers

For customer sideFor service provider side

(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

SQM

Major Components of CQM/SQM SystemMajor Components of CQM/SQM System

Contract digitize and monitor module

QoSQoSDataData

Account andAccount and Service Service management modulemanagement module

CQM/SLA

NMS A NMS NProvisioning

System A

Network managers Customer representatives customers

SQM Data Retrieve ModuleData Retrieve Module

Data Integration ModuleData Integration Module

Data Storage ModuleData Storage Module

BrowseBrowse DeliveryDelivery

… … ProvisioningSystem N

Information Manipulation ComponentInformation 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

Online Service Quality ReportOnline Service Quality Report

(c) Average used bandwidth of all circuits

(d) Heavily loaded circuits

Leased Line

(a) Circuit availability for September 2002

(b) Summary of monthly aggregated performance

ADSL IP-VPN

Conclusion and Future WorksConclusion and Future Works

Put significant emphasis on QoS issues by legislation Eliminate the equipments of obsolete circuits and Enh

ance the capability of NMSs Generate customer-oriented reports and notify activel

y What can satisfy the requirement of customers and g

ain the best margin for service providers? Implement SLA services on other network services, s

uch as MPLS-based and FTTB-based IP-VPN.