MPLS Japan Tools and techniques for smooth installation and maintenance of MPLS network
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1 MPLS Japan 2003 Tools and techniques for smooth installation and maintenance of MPLS network
2 Why the need for tools? The trend is that the packet network will be predominantly IP/MPLS As a result, most user services will have to be supported over MPLS networks - be it Voice or Wireless or even ATM/FR service Clearly, MPLS network need to very well managed, as the importance of the services it carries will be very high Thursday, January 23, 2003 Agilent Restricted Page 2
3 Solution requires two pronged approach Technical - Should be comprehensive - Features need to be suitable to testing network - Features need to be tailored to test MPLS Logistical - Should not be expensive to implement - Should not be difficult to manage or operate Thursday, January 23, 2003 Agilent Restricted Page 3
4 Centralized Testing for Network Why Centralized Troubleshooting/Management? A real business benefit Simplifies existing methods Reduce MTTR (Mean Time to Repair) Implementing Centralized Troubleshooting Various Elements Required Sample Scenarios Thursday, January 23, 2003 Agilent Restricted Page 4
5 Si Si Today s Carrier Network: Residential/Enterprise Access Services Platforms Edge/Metro Core/Long Haul CL5 PSTN VoIP Gateway SS7 >200λ DWDM Optical Core Optical λ Switch Residential/SOHO/ Enterprise via xdsl, Cable, Fiber, fixed wireless Mobile Internet via 3G RAN Access Switch/Router, SoftSwitch, MSPPs etc. Gb/Tb Router ATM/ MPLS/ GbE Switch Metro Optical Networks Tb Router/ Optical Switch Enterprise/Campus LAN FR/ATM/Gb Ethernet Switches/Routers VPN gateway Server Farms, Content Caches, Hosted Apps, etc. Thursday, January 23, 2003 Agilent Restricted Page 5
6 Converged Wireless Multi-services: Benefit? PSTN 2.5G and 3G Internet Core Broadband Wireless Access For 2 million subscribers at a conservative average fee of $55/month, this represents $110,000,000/month ATM, IP/MPLS, WDM, etc. ADSL, Cable, FR, etc Broadband Wireline Access xdsl or Cable Thursday, January 23, 2003 Agilent Restricted Page 6
7 Extreme Productivity Improvement: Drastically Reduce the Time it Takes to Start Solving the Problem Minutes Traditional Netw ork Troubleshooting Centralized Netw ork Troubleshooting 0 Symptom to first Measurement Problem Domain Identification Root Cause Isolation Traditional Network Troubleshooting Centralized Network Troubleshooting Source: Agilent Customer Base, 2002 Problem symptoms detected to first measurement: minutes Problem domain isolation: minutes Root Cause identification: minutes Meant Time to Repair (MTTR): minutes Problem symptoms detected to first measurement: 5 15 minutes Problem domain isolation: minutes Root Cause identification: minutes Mean Time to Repair (MTTR): minutes Thursday, January 23, 2003 Agilent Restricted Page 7
8 How Much Time? Centralized Network Troubleshooting Dispatching Engineer carrying portable tools Bill 70% Faster Verification of Solution Dispatch/Install Solution Solution Investigation & Design Problem Qualification Trouble Ticket Received 40% Less in OPEX Time in Minutes Thursday, January 23, 2003 Agilent Restricted Page 8
9 Implementing Centralized Network Troubleshooting for Managing the Various Components of Mission Critical Networks Operational Support System (OSS) Help desk Network Management System Development Tools Enterprise Management System Network system Database Applications CRM, ERP, CSM, e-business, Network Management, Network Gurus Managing Elements (SW Agent) Centralized IP-Network Analysis Network Troubleshooting Center Managing Elements (SW Agent) Managing Elements (SW Agent) Independent Managing SW Elements, Appl. Engineers Hand- Held Testers Network Analyzers RMON Probes Servers Clients Switches Routers MIBs, Agents, Hardware, Technicians Network Thursday, January 23, 2003 Agilent Restricted Page 9
10 Converged Network Architecture: What if I could use the SW Agents already existing in my network elements? PBX Video POTS Servers GbpsSwitch 1GbpsSwitch Mbps Switch 100 Mbps Switch Media Media Gateway Gateway 100 WAN T1/E1 DS3/E3 OC-3/STM-1 OC-12/STM-4 Metro GigE 100 Mbps Switch 100 Mbps Switch High bandwidth users 100 IP Phone /100 Mbps Hub 10/100 Mbps Hub 10 10/100 10/100 Mbps Mbps Hub Hub SW Agent Medium bandwidth users Low bandwidth users Thursday, January 23, 2003 Agilent Restricted Page 10
11 And What if I Could Also do Troubleshooting? TDM/PCM ( ) E-WAN Network Analyzer: Traffic Statistics HDLC 1000 Media Media Gateway Gateway ATM WAN 100 Frame Relay HTTP/Telnet/H.323/SIP TCP/UDP IP/MSDP/PIM/RSVP LLC/DSAP/SSAP/SNAP Ethernet MAC HTTP/Telnet/H.323/SIP TCP/UDP IP/OSPF/IGRP/BGP ATM/FR/HDLC/PPP Optical/Wire/Wireless Tool Optimized for IP over Any Topology Thursday, January 23, 2003 Agilent Restricted Page 11
12 Metro Multi-Tenant Units Centralized Network Analysis Aggregated Traffic Stats MTU Services: Internet access and Web hosting Programmable bandwidth VPN connectivity FSO PSTN 10/100 10/100 10/100 GigE IP Network GigE SONET/SDH/10GigE GigE Hardware Probe Thursday, January 23, 2003 Agilent Restricted Page 12
13 Aggregated Status from Mission Critical Areas LANs Switches WANs Thursday, January 23, 2003 Agilent Restricted Page 13
14 Why is MPLS a special problem? No unique source/destination pair in header as in IP packets No unique VPI/VCI identifier like in ATM packets Header for a circuit changes on traversing a node, hence changes over every physical link - making it difficult to track Only unique identifier is LSP ID or LSP name which is network specific The LSP ID is not carried in data packets, hence need to look at MIBs Above applies for MPLS VPNs in the same way (though inner label remains intact it is not intended to be looked at, as it may not flow over a predetermined physical path) Thursday, January 23, 2003 Agilent Restricted Page 14
15 Looking into the MIB is a requirement Info Source Data Collection Central Server MPLS MIBs Agent Server Reporting Tool Router Database Thursday, January 23, 2003 Agilent Restricted Page 15
16 End-to-End QoS for a VPN Environment Customer Service View and Characterization Customer-Specific Utilization VPN End-to-End QoS delivered by Provider Customer-Specific Utilization Provider Access Routers Internet or Core Network PE CE Remote Office CE PE Customer Edge Router --may or may not be managed by Provider MPLS PE CE Remote Office Central Site Customer Edge Routers --may or may not be managed by Provider Thursday, January 23, 2003 Agilent Restricted Page 16
17 VPN Product Requirements Service Management based on Class-of-Service for converged networks CoS monitoring for Data (best effort, business, priority), Voice, Video End-to-end monitoring of service health, per VPN with SAA active tests Correlate performance events with Service and Customer impact QoS Reporting per VPN, per application by CoS Latency, Jitter, Packet Loss Availability In/Out traffic policy including drops Actual traffic (bandwidth, e-2-e flow delivery ratios, via PerfE passive monitoring)?? Monitor and report on VPN Device Health Configurable device availability and performance data reports via PerfE MIB collector Management platform health monitoring (PerfE, VPNSC, QoS Manager) SLA management and Reporting by CoS Active SLA management per VPN, customer Real-time SLA alerting and reporting Historical SLA reporting per customer, service Performance alerting and analysis Configurable alerting thresholds Performance metric Baselines and trend reports Configurable Notification and Action services Thursday, January 23, 2003 Agilent Restricted Page 17
18 MPLS/VPN Management Solution with optional Managed CE QoS Manager Server VPN Inventory Data VPN Database QoS Tests* CE Data: Utilization Error Rates Router Health Latency Packet Loss Jitter DNS LDAP etc. CE * For Managed CE Services MIB Agent PE Interface Data: Utilization Error Rates Router Health PE Data Collectors Full Mesh PE PE: Latency Packet Loss Jitter Core I/F Utilization & Rates MPLS Core QoS Tests PE Service Tests: DNS LDAP RADIUS etc. Downstream PE CE: Latency Packet Loss Jitter DNS, RADIUS, LDAP, etc CE Active Test Thursday, January 23, 2003 Agilent Restricted Page 18
19 Testing Services at the same time.. Wireless Signaling Voice and VoIP Signaling Thursday, January 23, 2003 Agilent Restricted Page 19
20 Um Use Model for Mobile and 2.5G and 3G Networks 2G Cellular SS7 Uu BTS BSS Abis BSC Gb Iu-CS 3G Cellular Iub NODE B RNC A VLR Iu-PS MAP Gs MSC SGSN Core Network GSM & GPRS I EIR Gl Gn E D SMS SMS-GMSC SMS-IWMSC SMS - IWMSC Gr C HLR Gc SGSN SS7 SCE STP STP STP SMS SCP SUP STP STP STP Uu NODE B Iub RNC Iur LE UTRAN Thursday, January 23, 2003 Agilent Restricted Page 20
21 Testing & Troubleshooting VoIP Signaling Need to Drill-Down to any Connection Node: UDP RTP TCP.H245 TCP Q931 UDP RAS Measure Bandwidth used for each Node, Connection & Protocol Measure the impact of data on the Performance of VoIP Measure the BW used by Voice and correlate to Voice Quality Thursday, January 23, 2003 Agilent Restricted Page 21
22 Find Signalling Problems quickly 1: Click on call trace to start 2: Configure & trace calls graphically 3: See all the signaling messages for each call Thursday, January 23, 2003 Agilent Restricted Page 22
23 Centralized Troubleshooting Summary Don t t bring the network engineer to the problem, OSS Events bring the problem to the network engineer! Central Troubleshooting Tool Application Analyzer For example, Measure end to end QoS Hardware probes Analyzer SW RMON Agent 10/100 Ethernet 10/100 Ethernet Gigabit Backbone Switch/Router ATM/Frame Relay IP Network Gigabit Backbone Switch/Router Thursday, January 23, 2003 Agilent Restricted Page 23
24 References Calculating ROI for Centralized IP Network Analysis Systems in Large Enterprise Networks A White Paper by Leo De Rosa, Agilent Technologies Network Troubleshooting (book), by Othmar Kyas An Agilent Technologies Publication Thursday, January 23, 2003 Agilent Restricted Page 24
25 Questions & Answers
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