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Provisioning CERNET with Dark Fiber

Provisioning CERNET with Dark Fiber. Xing Li , Congxiao Bao CERNET Center <2003-04-08>. Outline. Background CERNET Optical Network Operation Experience Perspective. CERNET. China Education and Research Network is one of the 10 national IP backbones in Mainland China

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Provisioning CERNET with Dark Fiber

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  1. Provisioning CERNET with Dark Fiber Xing Li , Congxiao Bao CERNET Center <2003-04-08>

  2. Outline • Background • CERNET Optical Network • Operation Experience • Perspective

  3. CERNET • China Education and Research Network is one of the 10 national IP backbones in Mainland China • CERNET is the 2nd largest IP backbone • The equipment founding came from MoE and State Planning Commission • The Operation is self funded

  4. CERNET Link History • 1995 • 64K leased lines link to 8 regional network centers • 1996 • 512K leased lines link to 8 regional network centers • 9.6K X.25 or 64K leased line to 28 provincial centers • 1997 • 3.7M point-to-point satellite link to 8 regional network centers • 64K point-to-point satellite link to 12 remote provincial centers • 1999 • 155M SDH link to 8 regional network centers

  5. 哈尔滨 乌鲁木齐 长春 沈阳 呼和浩特 北京 唐山 天津 银川 石家庄 大连 济南 兰州 太原 烟台 西宁 青岛 郑州 西安 徐州 汉中 南京 成都 无锡 上海 合肥 重庆 武汉 黄梅 宜昌 拉萨 杭州 九江 长沙 南昌 福州 贵阳 台北 桂林 主干网 昆明 柳州 广州 厦门 地区网 百色 汕头 惠州 GigaPop 深圳 深圳 南宁 湛江 珠海 Pop 徐闻 海口 三亚 CERNET Layer 3 Topology

  6. CERNET Statistics • 36 PoPs covers all the provincial capitals • More than 1,000 universities located in 200+ cities • Currently about 10M users • There are 320M Students in China

  7. SY BJ 沈阳 哈尔滨 天津 北京 大连 济南 太原 石家庄 青岛 XA 郑州 CD 重庆 南京 上海 SH 成都 武汉 合肥 WH NJ 南昌 杭州 长沙 桂林 南宁 厦门 福州 广州 昆明 深圳 GZ 海口 CERNET Dark Fiber Topology

  8. Current Architecture Router Cisco Router Cisco 155M SDH 16x155M Lucent 2.5G 2.5G DWDM 16x2.5G Lucent Dark Fiber

  9. CERNET Transport Network • Transport network • 20,000 km • 200+ relay stations • DWDM 16x2.5G • SDH 155M

  10. Three Types DWDM sites • OA: Optical Amplifier • Terminal • Dual-Face

  11. CERNET DWDM System • 16x2.5G DWDM system (two lambda’s are currently running) • OC48 POS links to 8 cities • OC3 POS SDH links to all provincial capitals (except Lhasa) • unicast and multicast

  12. 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 0 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 DWDM System Receive 3R Transmit 1550 0 1551 1552 1553 20 ppm 1554 50 ppm 1555 PLL 1556 1557 Transmit Receive 3R 50 ppm 1550 LOOP TIMING PLL 1551 1552 1553 1554 1555 1556 1557

  13. Span Span Span Span Optical Amplifier Span Span Span Span Regenerator Hut Spacing: 40 km vs 65 km vs 100 km vs … x km Hut Spacing

  14. Power Budget

  15. OMU OTU1 OTU2 OA OTUn ODU OTU1 OTU2 OA OTUn Configuration of Terminal Site

  16. OMU ODU OTU1 OTU2 OA OA OTUn OMU ODU OTU1 OTU2 OA OA OTUn Configuration of Dual-Face Site

  17. OLS80G OLS80G (Ring2) 1c 1c ADM16/1 To Beijing To Hefei 6x155M(e) +4x155M(e) 9c 9c 2c 3c (Ring1) 2x155Me) (Ring3) OLS80G OLS80G 3c ADM16/1 2c ADM16/1 To Guangzhou To Chengdu ADM16/1 5x155M(e) 3x155M(e) 4x155M(e) 4x155M(e) 3c 9c 1c 2.5G To Beijing 4c OLS80G OLS80G 9c 2.5G To Nanjing 2c 2.5G To Guangzhou 1c 4c To University 2.5G To Chengdu 3c 9c 3c ADM16/1 Timing TSG3800 PRR-10 GSP 48VPower 2c 9x155M(o) +5x155M(o) +4x155M(o) Typical Site Configuration Example

  18. Stations

  19. Some Reality • Because POS interface is wavelength insensitive, OTU need not to be used after ODU. • Because DWDM system is point-to-point connection and has no self-healing capability, layer 3 routing restoration must be depended in case of fiber break. • Optical character test of optical interface must be done periodically because of aging both in equipment and fiber.

  20. 10000000 100000 1000 10 0.1 0.001 CERNET Dec-94 Dec-96 Dec-98 Dec-00 Dec-02 US CERNET Backbone Bandwidth

  21. Backbone Traffic

  22. GE LAN To Japan border Router Beijing Core Router Core Router MAN/LAN 2.5G POS WAN Core Router GE LAN EdgeRouter EdgeRouter Core Router Core Router GE LAN Core Router EdgeRouter GE MAN Shanghai GE LAN GE LAN EdgeRouter EdgeRouter MAN/LAN User Network (IPv6) Guangzhou CERNET DWDM for IPv6-CJ Testbed

  23. Next Step • ELH for 3,500 km DWDM system • Remove SDH Layer • Use OADM • Unified Management System • Optical • IP • OXC • Traffic Engineering • CWDM for the MAN • City PoPs

  24. 650 km 650 km 650 km EDFA EDFA EDFA Terminal Site O-E-O Regenerator EDFA/RAMAN 2,000 km CapEx and OpEx is Reduced by ELH-DWDM Terminal Site Replacing O-E-O by OA

  25. Unified Control Plane (UCP) Common Set of Control Functions Addressing, Routing, and Signaling Protocols Control Network MetroDWDM CoreDWDM MetroSONET IP IP Generalized across Disparate Transport Technologies UCP Beneficiaries and Functions End User On Demand, Optical Channel Provisioning Transport Provider Low Cost Per Bit Data Aware Optimization Application Provider New, Differentiated Services—At a Profit

  26. Figure 11.0 Fiber ring OIX with OBGP

  27. Spectrum of CWDM • 850nm：778nm、801nm、825nm、850nm • O—Band:1275.5nm、1300.2nm、1324.7nm、1349.2nm （1290、1310、1330、1350） • E—Band:1380 nm、1400nm 、1420nm 、1440nm • S+C+L Band:1470nm、1490nm、 1510nm 、1530nm、1550nm、1570nm、1590nm、1610nm

  28. CNGI • Testbed • Test and Measurement • Network Services • Demo Applications • Commercial Services • Network Equipment

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