제공을 위한 NGN 발전 방향 전 홍 범 KT 연구개발본부

Transcription

1 KT

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11 Service-specific Separated Access Network Service-independent Integrated Access Network Narrowband-Circuit Switchingbased Network PDH/SDH-based Transmission Network NGN Broadband-Packet Switchingbased Network WDM-based Transmission Network Service-specific Operation/Management Network Integrated Operation/Management Network

12 GMPLS Optical burst processing and switching Optical label/ packet processing and packet buffering Dynamic OCh routing Static OCh routing Programmable OXCs, OADMs Ultra-fast tunable lasers present 1-3 years 3-5+ years 10+ years Optical Buffers : photuris

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14 : Lantern Communication Ethernet

15 : Router : Switch Metro-core 1G/10G WDM Giga/Tera Router KORNET 1M ~1Gb/s Metro-Access 1G/10Gbps CDN server Building Ethernet/xDSL 1M ~1Gb/s Building APT Internet cafe Wireless LAN

16 Softswitch Dat a Voice KORNET Trunking Gateway Signalling Gateway Dat a Voice Residential Gateway Access Gateway PSTN No.7 network

17 Integrated Access Network Integrated Service Network Unified Backbone Network Enhanced Application Services - Video/Voice/Data - Real-time applications - Advanced VPN Service - Flexible bandwidth/qos - Mobile services VoIP Mobility QoS CDN VPN IP/MPLS xdsl Ethernet Wireless ATM/Ethernet Access Network DWDM Transmission Network CDN: Contents Delivery Network

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21 xdsl network ISP GbE network edge core edge Enterprise network Access network Backbone network Customer/ provider network QoS QoS End-end QoS ISP/EnterpriseQ os

22 GSR GSR

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26 ER1 BR1 DS core BR2 ER2 Host Non-DiffServ region DiffServ region Non-DiffServ region Host RSVP aware MF traffic control per-flow RSVP RSVP unaware RSVP aware Aggregate traffic control Aggregate RSVP RSVP aware MF traffic control per-flow RSVP

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28 Host Router PDP RSVPD RSVPD Application D A T A Policy Control Admissions Control Routing Process Policy Control PEP Admissions Control Packet Classifier Packet Scheduler DATA Packet Classifier Packet Scheduler DATA

29 DS Domain Edge Router PHB Core Router Core Router Edge Router Edge Router Core Router Core Router DS1(ISP A) DS2(ISP B) Edge Router SLA BB SLA BB SLA Edge Router LAN1 Edge Router Edge Router LAN2 Edge Router DS Region

30 SLA Tell how to mark, police, shape, and forward based on user request, current network states, and domain policy ER DB BB Policy server SLA ER CR PHB Domain A CR PHB CR PHB ER ER Domain B ER Shape departing aggregate marked traffic based on policy Police and mark local packet based on filters installed by BB

31 Service signaling Shaphing Scheduling Service mapping Admission control Service signaling Resource availabilty signaling PHB forwarding Resource availability signaling Service mapping Admission control Service signaling Resource availabilty signaling Service signaling Shaphing Scheduling xdsl network ISP GbE network DS edge DS core DS edge Enterprise network IP/MPLS network Access network Backbone network Customer/ provider network RSVP/IntServ RSVP/SBM DiffServ/MPLS End-end QoS RSVP/IntServ RSVP/SBM, DiffServ

32 static SLA

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36 QUESTIONS