130 Sidevõrgud IRT 4060/ IRT 0020 vooruloeng 12 / 1. dets 2004 Sidekvaliteet Avo Ots telekommunikatsiooni õppetool, TTÜ raadio- ja sidetehnika inst.

131 NGN QoS and security for successful convergence Virtual Private Networks for converged networks and QoS Network management directories, policies and intelligent agents for decision support, configuration and QoS

132 *Related Items Economies of scale favor IP ATM and IP

133 Voice vs data Telecommunications s Connections s Tightly Coupled s Centralized Controls s HW Fault Tolerance s Features At Call Set-Up s Obsession With QoS s Low Latency Data Communications p Connectionless p Loosely Coupled p Loose Controls,Distributed p SW Fault Tolerance p Features During ‘Session’ p Little Attention To QoS p High Latency Voice over IP Virtual Private Networks E-Commerce Video & audio streaming, conferencing…multi-media Mobile Access QoS: DiffServ, MPLS, QoS- aware Switches Multi-Protocol Support: ATM (CBR,VBR,UBR, ABR), IP, IP Over FR/ATM Multicasting Manageability & Intelligent Networking:Policy Driven Nets Security High Reliability Scalability Common Infrastructure Applications

134 CAC=Call/Connection Admission Control DS=DiffServ Byte in IP Header 802.1p DS 802.1p DS CAC “IP” Network LEC SS7 LEC SS7 DS Media Gateway Media Gateway Signaling Gateway Signaling Gateway Media GW Controller Media GW Controller Gate Keeper Gate Keeper QoS Policy, Manager VoIP Architecture

135 Core Network Data Source Data Receiver Data Receiver Data Receiver Data Receiver Data Receiver Data Receiver Data Receiver Data Receiver Multicast Cooperative Server Multicast Group Multicast Group Multicast Group Multicast Cooperative Server Core Network Data Source Data Receiver Data Receiver Data Receiver Data Receiver Data Receiver Data Receiver Data Receiver Data Receiver Reduced Latency via Reduced traffic on core network Reduced load at data source server Data closer to receivers Obstacles to Overcome Lack of unique set of protocols Data synchronization Reliability, Recovery from lost data Multicasting

136 Client L4 Request Trap http Load Balance Requests Router PULL Multicast Request Reply Request Central Cache Control Cache Sites

137 Management (1) Device Manager (NMS) Data store Network Device Agent NVRAM Network Device Agent NVRAM SNMP Device Manager (2) Data store Network Device Agent NVRAM

138 Management (2) Network Device Radius DNS/DHCP Network Management Network Device Policy Administration Policy Support Services (VPN Designer) Policy Distribution Network Device Radius DNS/DHCP LDAP Network Management COPS Technology Specific Configurations Technology Policy Servers Business Policy Servers SNMP

139 Wireless Personal Area Network Wireless Local Area Network Wireless Interworking Technologies Hand-over Wireless Wide Area Network

140 Fikseeritud kvaliteeditingimused (SLA) SLA 1 SLA 2 SLA 3 SLA 4 SLA 5 SLA 6 SLA 7

141 SLA areng SLA Reliability Blocking Dynamic SLA Reliability Blocking Latency Jitter Loss The Past The Future

142 Policy Group Policy Rule Condition Action QoS: Quality of Service CAC : Call Admission Control SLA: Service Level Agreement Resource Reservation (RSVP) [InServ] Differentiated Services:DiffServ QoS is Delivered using SLA & Resource management techniques A set of Rules are derived from the QoS Policy SLA Core Schema Core Schema QoS MIB Directory PDPDevices SLA & QoS