IP Transport over SONET
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1 IP Transport over SONET David A. Border Assistant Professor Bowling Green State University Bowling Green, Ohio Fax Gary C. Border President Digital Automation Associates 310 W. Gypsy Lane Road Bowling Green, Ohio Fax presentation #146
2 Ethernet & DS1/DS3 IP Transport over SONET
3 Media Mix In order of development Copper Atmospheric Fiber Optic
4 Copper + Microwave Based Media DS-X speed data communication DS0 64 kbps DS kbps DS Mbps DS Mbps Based on needs of a PCM encoded voice data telephone system
5 New Media / New Techniques Data based system High bandwidth availability Fast switching capabilities
6 SONET (Synchronous Optical Network) An ANSI Standard for synchronous data transmission on optical media. U.S. analog of international standard SDH, Synchronous Digital Hierarchy. Operates digital transmissions at base rate, and base rate multiples.
7 Optical Carrier Levels Begins at a base rate of Mbps: OC-1. Operates digital transmissions at base rate, and base rate multiples. E.g. OC-2 at Mbps OC-3 at Mbps OC-192 at 9.95 Gbps
8 SONET contents SONET may provision a variety of traffic contents including Asynchronous transfer mode (ATM) packets. IP packets (Packets over Sonet: POS). Time Division Multiplexing (TDM) Video Frame relay
9 ATM and SONET Pure ATM SONET Rings All services share statistically mux d bandwidth via fixed sized cells Voice Data Video ATM QoS controls allocation & usage Protection via ATM protocols
10 TDM SONET Pure TDM SONET Rings Every subscriber gets dedicated circuit, stranding bandwidth Protection via SONET APS (50ms recovery) Voice Data Video DS1 OCn DS3 Leased line ATM VPs IP Router links DS3 DS3
11 New Class of SONET Device A highly integrated, Multi-function Transport Platform Traditional ADM Internet Router Traditional DACS SONET ADM (POS switch, ATM SAM) Traditional Data Switch (ATM, FR)
12 New Methods of Voice & Data over SONET - Hybrid Hybrid SONET Rings Services get dedicated bandwidth via TDM Statistically muxing used within service bandwidth for efficiency Protection - SONET APS and data protocols TDM POS ATM LAN VoIP Internet FR Voice Leased line Voice Voice Video Data
13 Traditional SONET MUX DS-1 OC-3 TDM DS-3 TL-1 Datacom MUX 10/100//1000 BaseT OC-3 ATM UNI Linear Network Unprotected Spigot SNMP New DS-1 DS-3 10/100/1000 BaseT OC-3 ATM UNI Ring or Linear Network STS-Nc TL-1 & SNMP (Web Browser) SONET Infrastructure
14 Access Multiplexer Application OC-N DS3 DS1 10/100 BaseT Gigabit Ethernet Voice over IP OC-N Linear,ADM, Ring, etc. Deliver private lines, LAN, video and switched services Consolidate traffic into SONET pipe Use linear, add/drop, and ring configurations to connect nodes
15 Concentration - Transmission Perspective 100 Base T 100 Base T 100 Base T STS-1 10 Base T 10 Base T Flows are aggregated into one or more STS-1 Example shows 320 Mb/s concentrated to 50Mb/s Concentration of IP, ATM, and Frame Relay
16 Use of Hybrid SONET Reduces ancillary equipment costs Gathers diverse data elements into SONET s fault tolerant environment
17 SONET Fault Tolerant Topology Multiple pairs of transmit and receive fibers Self healing feature
18 Markets Competitive Carriers CLEC / ICP Regional IXC Cable TV Utilities Incumbent LECs National Carriers RBOCs International
19 SONET Transport TDM IP ATM FR Metropolitan Network Central Office Wide Area Network OC48 OC192 Access Core
20 System Capabilities SONET/SDH Transport Digital Cross-Connect (VT and STS) High Speed Data Access, Concentration and Switching.
21 Features of Hybrid SONET TDM Interfaces Optical Interfaces OC-192, OC-48, OC-12, OC-3 Electrical Interfaces DS1, DS3, STS-1, E1
22 Hybrid SONET features High Speed Data Interfaces Data Interfaces 10/100/1000 Ethernet OC3, OC12, OC48 Packet Over SONET DS1, DS3, OC3, OC12 ATM UNI DS1, DS3 Frame Relay
23 Packet over SONET Supports native transmission of IP traffic Eliminates interim ATM steps of IP encapsulation (incl.. ATM cell tax ) Eliminates ATM switches and ADMs
24 Sample SONET Interface Card Capability E100T 12 FAIL ACT/STBY SF 1 2 E1000F 2 GBIC FAIL ACT/STBY SF 12 port 10/100 Ethernet Auto-sensing 10/100Mb 10BaseT/100BaseT copper 2 port Gigabit Ethernet 1000Base-SX, 1000Base-CX Full Ethernet switching via IEEE802.1D
25 Ethernet Over SONET Value Set Cards enable Operators to provide multiple 10/100/1000 Mb/s access Customer LAN Interconnects (TLS) Internet traffic Cable modem traffic Mitigates need for external aggregation equipment (e.g. Routers, Ethernet switches, etc.) Coexists with traditional TDM traffic (e.g. DS-1) Supports Copper and Fiber interface options Maximizes use of fiber plant and available STS bandwidth
26 Applications
27 Backbone Transport Voice Data Video Voice Data Video Point to Point Linear ADM BLSR UPSR Voice Data Video Central Office Voice Data Video Central Office
28 Sub-Network Interconnection SONET Ring BLSR SONET Ring UPSR
29 Scalable Access Multiplexer Customer Premises OC-N DS3 DS1 10/100 BaseT Gigabit Ethernet Voice over IP OC-N Linear,ADM, Ring, etc. Deliver private lines, LAN, video and switched services Consolidate traffic into SONET pipe High speed data aggregation to maximize revenue of Sonet ring
30 Digital Cross-Connect A A A A B B B B C C C C D D D D A B C D C D C D D C B A A B A B STS Cross-connect Matrix 288 STS1 Capacity VT1.5 Cross-connect 336 VT1.5 Capacity Grooming and consolidation of traffic
31 Ethernet Aggregation 100 Base T 100 Base T 100 Base T 10 Base T STS-N 10 Base T Flows are aggregated into one or more STS-1 Example shows 320 Mb/s concentrated to 50Mb/s Concentration of IP, ATM, and Frame Relay
32 Cable Modem Backbone Traffic Characteristics Shared 10Mbps per subscriber Shared Ring is ideal data topology Hairpinning is common Features/Benefits Bandwidth per loop can be engineered/guaranteed No need for remote routers Cerent 454 DS3 / IF Video DS3 / IF Video Cable Headend Cerent 454 Cable Headend 10/100T/GigE Data Cerent /100T Data To Internet NAP Cerent 454
33 Internet Backbone Traffic characteristics Mostly homing pattern Some local & hairpinning Local server attachment at CO Benefits Efficient bandwidth use Reduces need for backbone routers in POPs Eliminates need for separate data center Ethernet switch in CO ISP servers ( , DNS, File, RAIDUS ) Cerent T Cerent 454 Cerent 454 Backbone Router ISP Access Routers Gig E 100T To Internet NAP Cerent 454
34 Transparent LAN Service Backbone TLS Features Supports private networks and Internet Access. Provides CIR-style bandwidth guarantees. Use shared STS for subscribers Priority can be applied to separate STS for premium service Benefits Efficient use of bandwidth Shared bandwidth with SLA capability ACME Co. Site 1 10Mb Ethernet Private TLS STS 10Mb Ethernet ACME Co. Site 2 Cerent 454 Cerent 454 ISP Backbone Router Gig Eth Cust router To Internet NAP 100Mb Ethernet XYZ Co. Public Internet STS
35 Signal Management TDM IP ATM FR STS-Nc paths TDM IP ATM FR SONET / SDH Ring TDM IP ATM FR TDM IP ATM FR
36 Economics
37 Economics of Hybrid SONET Low First Cost Efficient Bandwidth Utilization Life Cost Savings Plug and play architecture Scalable transport High density interfaces
38 Summary Scalable Transport Interfaces OC3 to OC192 High Speed Data Access and Switching IP, ATM, and Frame Relay Efficient Use of Bandwidth Statistical Multiplexing
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