Label Switched Path (LSP) Dynamical Provisioning Performance Metrics - PowerPoint PPT Presentation

Label Switched Path (LSP) Dynamical Provisioning Performance Metrics in Generalized MPLS Networks draft-xie-ccamp-lsp-dppm-00.txt Guoying Zhang China Academy of Telecommunication Research, MII, P.R.China 2007.3 2007 年 3 月 16 日 第 1 页 WWW.CTTL.COM.CN

Requirements � Requirements of dynamical provisioning capability in GMPLS Networks: • Interactive Broadband Multimedia Services • Video on Demand • Digital Video Brocasting-IP, IPTV • etc. � Growing needs for measuring and characterizing LSP provisioning performance in GMPLS networks • Mapping provisioning capability to application requirements • GMPLS Network maintenance and optimization. 2007 年 3 月 16 日 第 2 页 WWW.CTTL.COM.CN

Motivations � China High Performance Broadband Information Network (3TNET) ----863 project Sponsored by the Ministry of Science and Technology • Circuit-switched and packet-switched hybrid network to support large-scale interactive broadband streaming media. • Network Infrastructure: IP +ASON/GMPLS+DWDM • Services: VOD, DVB-IP, high speed Internet access � ASON/GMPLS network with burst scheduling and multicasting enhanced features. � A large-scale field trial carried out in the Eastern China. 2007 年 3 月 16 日 第 3 页 WWW.CTTL.COM.CN

3TNet Topology 浙江大学试验区 骨干网络光纤， STM-64 接入网络光纤， GE BMG 接入网络光纤， 10GE 接入网络光纤， FE 图 江苏东南 RIU*70 大学试验区 直播电视流， GE IP 网络， 10GE 例 8GE 40GE EMD 40GE ACR 点播电视流， GE IP 网络， GE ZJU-NET CERNET 其他应用， GE IP 网络， FE MS 浙大 DVB-IP ASON 文广互动网络电视台 电信浙江 长途局 DWDM CDP 电信江苏 长途局 MS 电信上海 电信武宁 文广 ASON 电信联洋 ASON 长途局 DWDM ACR ASON EMD ASON GSW RIU 城域光网络 BMG CS GSR 电信接入示范区 MCP ASON 信息大楼 BOSS ASON 电信桂林 电信北蔡 33GE ASON 宽带网络中心及古北接入示范区 MS 宽带中心 交大闵行 ASON ACR ASON ASON 网管 MS2 组 古北接入网网管 其他 ISP 应用 OLT 上海交通大学试验区 3TNet 一体化网管 GSR ACR ACR （徐汇） VOIP （闵行） MS ONU 具有组 科技网 播复制 SJTU-NET 功能的 RIU RIU*10 电视墙 其他 ISP 应用 大屏幕演示系统 DVB-IP 测试 MCP BOSS 闵行展示中心 EMD BMG 闵行电信学院 徐汇网络展示 RIU*6 网络展示 具有组 CERNET 播复制 功能的 EMD RIU CNGI- RIU RIU CERNET2 BMG 2007 年 3 月 16 日 第 4 页 WWW.CTTL.COM.CN

VOD: Burst Scheduled LSP Finely tuned connection scheduling model CDP Server Sw Sw i t ch i t ch • Periodic LSP provisioning UNI-C for 5 experimental regions CS Server VOD media server. O O XC XC 1 1 R R out er out er • Hold a LSP only 10s,then ASON IP Network release. O O XC XC 4 4 O O XC XC 2 2 O O XC XC 3 3 R R out er out er ACR . . . . . . Media Sever CPN BMG BMG 2007 年 3 月 16 日 第 5 页 WWW.CTTL.COM.CN

DVB-IP: Dynamic Multicast LSP Multiple FE connections bet . HE and edge device HE Aggregation node AM -3 OXC -2 LAN Switch OXC-3 HE OXC-1 End User s Channel q HE Channel p Multiple channels in each HE connection Channel 2 Channel 1 Automatically Provisioned OXC -4 OXC -5 P2MP LSP Tunnel One P 2MP LSP Tunnel IP Multicast stream /Channel for each HE connection HE : Head End AM -2 AM -1 AM : Access Module OXC: ASON Cross Connect End User s End User s Arbitrary provisioning for DVB-IP head-ends 2007 年 3 月 16 日 第 6 页 WWW.CTTL.COM.CN

Measured Performance in the Field Trial 500 1000 1500 2000 2500 99.999 1000 99.9 Cumulative Counts 99 500ms/100ms 800 95 Setup Delay (ms) 80 60 600 40 20 5 400 1 0.1 200 0.01 16000 0 14000 0 100 200 300 12000 Request Sequence 10000 Counts 8000 � Delay Variance observed at 6000 4000 any load. Higher load will 2000 lead to higher variance and 0 500 1000 1500 2000 2500 longer setup/release delay. Setup Delay (ms) Average setup delay 668 ms 99.9% setup delay less than 1000ms 2007 年 3 月 16 日 第 7 页 WWW.CTTL.COM.CN

Defined Metrics & Methodology Testing � GMPLS control channel testing is similar Tool to IP network testing • Round-trip delay � LSP DPPM uses the framework of IPPM. IP Network • Measured performance Under Test • Unidirectional LSP Setup Delay • Bidirectional LSP Setup Delay • LSP Graceful Release Delay Testing Tool • Statistical performance • Min/Max/Median/Percentile • Variance GMPLS Network • Blocking probability Control Channel Under Test 2007 年 3 月 16 日 第 8 页 WWW.CTTL.COM.CN

Open Issues � Performance metrics for LSP reroute & P2MP. � Enhancement of MIBs: support monitoring of LSP provisioning metrics on GMPLS nodes, for maintenance/optimization. � Etc. 2007 年 3 月 16 日 第 9 页 WWW.CTTL.COM.CN