Đề tài QoS over MPLS for Hutech network

Supervisor: Nguyễn Đức Quang QoS over MPLS for Hutech network Student: Trần Quang Hải Đăng - 1 - Table of Contents Architecture of Subject.......................................................................................4 Relation Words ...................................................................................................5 Multiprotocol label switching ............................................................................6 Actuality of MPLS at VietNam..........................................................................6 Advantage of MPLS...........................................................................................8 Disadvantage of MPLS.......................................................................................8 Icon use in subject ..............................................................................................9 CHAPTER 1: INTRODUCTION ABOUT NETWORK SYSTEM OF HUTECH UNIVERSITY .................................... 10 1.1. Description about network system of Hutech University. ..........................11 1.2. Important problem and solution. .................................................................11 1.3. Task of subject.............................................................................................12 CHAPTER 2: QOS OVER MPLS NETWORK.........................13 Part 1: Overview about MPLS .................................................... 14 2.1. Architecture of MPLS packet......................................................................15 2.1.1. Label. ..................................................................................................15 2.1.2. Experimental. ......................................................................................15 2.1.3. Bottom of Stack. .................................................................................15 2.1.4. Time to Live........................................................................................16 2.2. Operating of MPLS network. ......................................................................16 2.2.1. MPLS domain. ....................................................................................16 2.2.2. Ingress and egress node. .....................................................................17 2.2.3. Label Switch Router. ..........................................................................17 2.2.4. Label Switch Path. ..............................................................................18 2.2.5. Forwarding Equivalent Class..............................................................18 Supervisor: Nguyễn Đức Quang QoS over MPLS for Hutech network Student: Trần Quang Hải Đăng - 2 - 2.2.6. Label Distribution Protocol. ...............................................................19 2.3. Command for configure MPLS...................................................................20 Part 2: Overview about QoS ....................................................... 22 2.4. Architecture of QoS.....................................................................................23 2.4.1. IntServ model......................................................................................23 2.4.2. DiffServ model....................................................................................25 2.4.3. Different between IntServ model and DiffServ model.......................27 2.5. Classification. ..............................................................................................27 2.6. Marking. ......................................................................................................27 2.7. Queuing tools...............................................................................................28 2.7.1. First In-First Out Queuing. .................................................................29 2.7.2. Priority Queuing..................................................................................31 2.7.3. Custom Queuing. ................................................................................32 2.7.4. Weighted Fair Queuing.......................................................................33 2.7.5. Class-Based Weighted Fair Queuing. .................................................38 2.7.6. Low-latency Queuing. ........................................................................41 Part 3: QoS over MPLS...............................................................44 2.8. Relation about IPP, DSCP and MPLS EXP. ...............................................45 2.8.1. IPP.......................................................................................................45 2.8.2. DSCP...................................................................................................46 2.8.3. MPLS EXP..........................................................................................47 2.9. DiffServ with IP packets. ............................................................................48 2.10. DiffServ with MPLS packets. ...................................................................50 2.11. DiffServ Tunneling Modes for MPLS networks.......................................52 2.11.1. Pipe Model. .......................................................................................52 2.11.2. Short-Pipe Model. .............................................................................54 2.11.3. Uniform Model. ................................................................................55 2.12. Steps implement QoS over MPLS.............................................................57 Supervisor: Nguyễn Đức Quang QoS over MPLS for Hutech network Student: Trần Quang Hải Đăng - 3 - CHAPTER 3: NETWORK DESIGN AND IMPLEMENT ....... 58 3.1. Building solution for Hutech network.........................................................60 3.1.1. Real model of Hutech network. ..........................................................60 3.1.2. Solution model for Hutech network....................................................61 3.2. Building simulation model to resolve for Hutech network. ........................62 3.2.1. Simulation model. ...............................................................................62 3.2.2. Implement QoS over MPLS in simulation model. .............................64 3.3. Get Result. ...................................................................................................72 Get Result and Define of develop in Subject..............................74 References .........................................................................................................75 Index ...................................................................................................................76 Supervisor: Nguyễn Đức Quang QoS over MPLS for Hutech network Student: Trần Quang Hải Đăng - 4 - Architecture of subject Subject includes three chapters: Chapter 1: Introduction about network system of Hutech University, problem of Hutech network system, solution to resolve. Chapter 2: Chapter 2 includes three parts. Part 1: Overview about MPLS, architecture MPLS packet, operation of MPLS network, command line for configure MPLS operation. Part 2: Overview about QoS, architecture of QoS, classification, marking and queuing tool. Part 3: QoS over MPLS, relative about IPP, DSCP and MPLS EXP, DiffServ with IP packet and MPLS packet, DiffServ tunneling mode, steps implement QoS over MPLS network. Chapter 3: Network design and implement. Deploy QoS over MPLS, get result and define of develop in subject. Supervisor: Nguyễn Đức Quang QoS over MPLS for Hutech network Student: Trần Quang Hải Đăng - 5 - Relation Words IPP : IP Precedence (value support implement QoS) DSCP : Differentiated Services Code Point MPLS : Multiprotocol Label Switching EXP : Experimental QoS : Quality of Service LSP : Label Switched Path LSR : Label Switched Router IntServ :Iintegrated services DiffServ : Differentiated Services LLQ : Low-latency Queuing FIFO : First In – First Out CQ : Custom Queuing WFQ : Weighted Fair Queuing CBWFQ : Class-Based Weighted Fair Queuing LDP : Label Distribution Protocol Supervisor: Nguyễn Đức Quang QoS over MPLS for Hutech network Student: Trần Quang Hải Đăng - 6 - Multiprotocol Label Switching Multiprotocol Label Switching (MPLS) is a standards-approved technology for speeding up network traffic flow and making it easier to manage. MPLS involves setting up a specific path for a given sequence of packets, identified by a label put in each packet, thus saving the time needed for a router to look up the address to the next node to forward the packet to. MPLS is called multiprotocol because it works with the Internet Protocol (IP), Asynchronous Transport Mode (ATM), and frame relay network protocols. With reference to the standard model for a network (the Open Systems Interconnection, or OSI model), MPLS allows most packets to be forwarded at the layer 2 (switching) level rather than at the layer 3 (routing) level. In addition to moving traffic faster overall, MPLS makes it easy to manage a network for quality of service (QoS). For these reasons, the technique is expected to be readily adopted as networks begin to carry more and different mixtures of traffic. Actuality of MPLS at VietNam -With VietNam, MPLS deployment are building in communication network at VNPT head of company VietNam. With VoIP project is deploying, VNPT established an axle MPLS network with three LSR core. LSRs edge will be invested and extended at places have large demand as Hai Phong, Quang Ninh at north, Da Nang, Khanh Hoa…at medium, Binh Duong, Dong Nai, Ba Ria – Vung Tau…at south. Next, FPT Telecom, Viettel, electricity are taked part and create competition environment with high QoS and cheap. - Present, not including companies and foreign office representative, there are a lot of home companies in finance field, insurance, bank use this service (Bao Viet insurance company, Dong A bank…). Beside that, arrange state as Ministry of Finance, customs, treasury, tax associated together by VPN/MPLS. -VPN/MPLS technology officially deployed, applied and test successfully and inserted to exploited from 2003 by VDC. 2004, VPN MPLS solution of VDC Supervisor: Nguyễn Đức Quang QoS over MPLS for Hutech network Student: Trần Quang Hải Đăng - 7 - saved up technology information IT Week 14 gold cup and extended to exploited on all 64 provinces of all the country with trade name VPN/VNN. - VPN/VNN MPLS solution of VDC apply and deploy to rely on pass and device technology of Cisco, with target create a network solution safe, security, slow late and intergrate with each apply as Data, Voice, Video… Price for first setup: include price for setup and link to MPLS/VNN Order Speed Price for channel TDNH (VND/channel/time) Price for setup, link to network VPN/VNN(VND/ch annel/time) 1 64 Kbps 1,500,000 2,000,000 2 128Kbps<speed <=896kbps 5,000,000 2,000,000 3 1Mbps<speed<= 2Mbps 5,000,000 3,000,000 4 2Mbps<speed<= 10Mbps 20,000,000 5,000,000 5 10Mbps<speed<=155Mbps 20,000,000 10,000,000 Price for month: (Upcountry price + Service price MPLS/VNN) Order Speed Price for channel TDNH (VND/port /month) Price for all (VND/port /month) 1 64Kbps 609,000 958,000 2 128Kbps 875,000 1,447,000 3 192Kbps 1,104,000 1,694,000 4 156Kbps 1,370,000 1,941,000 5 384Kbps 1,705,000 2,415,000 6 512Kbps 2,114,000 2,994,000 7 768Kbps 2,600,000 3,558,000 8 896Kbps 2,886,000 3,682,000 9 1024Kbps 3,171,000 3,928,000 10 1536Kbps 4,394,000 5,442,000 11 2048Kbps 5,112,000 5,978,000 12 4Mbps 10,224,000 11,561,000 Supervisor: Nguyễn Đức Quang QoS over MPLS for Hutech network Student: Trần Quang Hải Đăng - 8 - 13 6Mbps 15,758,000 14 8Mbps 18,914,400 20,529,000 15 10Mbps 25,661,000 16 34Mbps 24,536,000 33,034,000 17 45Mbps 42,173,000 63,964,000 Advantage of MPLS: -Security (absolute security in core MPLS network and local loop network). -Flexible (Easy for wire-open). -Easy for administrator control. Disadvantage of MPLS: -VietNam has limit human resource for control MPLS network system. -Device support MPLS network is limit. Supervisor: Nguyễn Đức Quang QoS over MPLS for Hutech network Student: Trần Quang Hải Đăng - 9 - Icon use in subject Supervisor: Nguyễn Đức Quang QoS over MPLS for Hutech network Student: Trần Quang Hải Đăng - 10 - CHAPTER 1: INTRODUCTION ABOUT NETWORK SYSTEM OF HUTECH UNIVERSITY Supervisor: Nguyễn Đức Quang QoS over MPLS for Hutech network Student: Trần Quang Hải Đăng - 11 - 1.1. Description about network system of Hutech University. Hutech University include three branches, branch 1 at Binh Thanh distinct, branch 2 at Phu Nhuan distinct, and the last branch at Thu Duc distinct. Three branches join together by Frame-Relay technology. In every branch, include type of faculty: -Faculty of information technology. -Faculty of economy. -Faculty of build. -Faculty of foreign language. -Faculty of electron. In addition, every branch has SQL server, Web Server, FTP Server, Mail Server. Network diagram Figure 1.1- Network diagram of Hutech University. 1.2. Important problem and solution. Hutech University is carrying to enlarge infrastructure. Up to this time, the number of branch and department are growing a lot. For this reason, network system of Supervisor: Nguyễn Đức Quang QoS over MPLS for Hutech network Student: Trần Quang Hải Đăng - 12 - Hutech University is old and stunted. This network system can’t satisfy need to communication information between branches. Network system has limit bandwidth and old technology, so obstruct at any time in network system. To make good that problem, solution for Hutech University network system must a new technology, high effect, low cost. We have too much solutions, and the best solution is QoS over MPLS. 1.3. Task of Subject. With Hutech’s problem, we will build technology QoS over MPLS for Hutech network. We design and implement to preference for important traffic, example video traffic, voice traffic… To limit obstruct. Model solution for Hutech network: Figure 1.2 – Solution model for Hutech network Supervisor: Nguyễn Đức Quang QoS over MPLS for Hutech network Student: Trần Quang Hải Đăng - 13 - CHAPTER 2: QOS OVER MPLS NETWORK Supervisor: Nguyễn Đức Quang QoS over MPLS for Hutech network Student: Trần Quang Hải Đăng - 14 - PART 1: OVERVIEW ABOUT MPLS Supervisor: Nguyễn Đức Quang QoS over MPLS for Hutech network Student: Trần Quang Hải Đăng - 15 - 2.1. Architecture of MPLS packet. MPLS label is a field with 32 bit with hard architecture. Figure 2.1 - MPLS label architecture. 2.1.1. Label. Label include 20 bit in header MPLS, their value between 0 to 220–1 and it has 1,048,575 labels. However, 16 value labels first aren’t use. In IP network, transport packets must use IP source and IP destination, but with MPLS network, packets are transport by label. Routers use label instead for IP address. 2.1.2. Experimental. From bit 20 to bit 22 is exp field, three bits used for quality of services. Exp bit similar Precedence bit in IP header. In IP network, implement quality of service is use IP Precedence or DSCP, but with MPLS network is use Experimental. 2.1.3. Bottom of Stack. Bit 23 BoS (Bottom of Stack) in MPLS header, if label is bottom of stack, it has value 1, if label isn’t bottom of stack it has value 0. Figure 2.2 – Label of Stack. Supervisor: Nguyễn Đức Quang QoS over MPLS for Hutech network Student: Trần Quang Hải Đăng - 16 - In MPLS network, when transport packets, every router in MPLS network is use label for forward packets to exactly destination, router is use label table. 2.1.4. Time to Live. From bit 24 to bit 31 are used for TTL (Time to Live) field. This field similar TTL field in IP header. If router can’t finds the destination of packet but router is forwarding that packet, this action will loop. So TTL field make avoid look. When packet through every router it’s drop 1. When TTL field has value 0, router will drop it. 2.2. Operating of MPLS network. 2.2.1. MPLS domain. MPLS domain include two parts: -Core network (core). -Edge network (edge). With cord network, core network operate complete in MPLS network, router operate in core network will assign label to packet and forward that packet to next router. With edge network, router in edge network must do two tasks; two tasks are imposition label and disposition label from packet. In case imposition with packet through from IP network to MPLS network, packet is imposition label and that operation is call imposition. With case packet through from MPLS network to IP network, packet is disposition label and operation is call disposition. Figure 2.3 - Imposition and Disposition. Supervisor: Nguyễn Đức Quang QoS over MPLS for Hutech network Student: Trần Quang Hải Đăng - 17 - 2.2.2. Ingress and Egress node. When packet goes from IP network to MPLS network, packet will assign label. And operation is call ingress. When packet goes from MPLS network to IP network, packet will unassigned label. And operation is call egress. Both ingress and egress node are edge router. 2.2.3. Label Switch Router. A label switch router (LSR) is a router that supports MPLS. It is capable of understanding MPLS labels and of receiving and transmitting a labeled packet on a data link. Three kinds of LSRs exist in an MPLS network: Ingress LSRs receive a packet that is not labeled yet, insert a label (stack) in front of the packet, and send it on a data link. Egress LSRs receive labeled packets, remove the label(s), and send them on a data link. Ingress and egress LSRs are edge LSRs. Intermediate LSRs receive an incoming labeled packet, perform an operation on it, switch the packet, and send the packet on the correct data link. An LSR can do the three operations: pop, push, or swap. It must be able to pop one or more labels (remove one or more labels from the top of the label stack) before switching the packet out. An LSR must also be able to push one or more labels onto the received packet. If the received packet is already labeled, the LSR pushes one or more labels onto the label stack and switches out the packet. If the packet is not labeled yet, the LSR creates a label stack and pushes it onto the packet. An LSR must also be able to swap a label. This simply means that when a labeled packet is received, the top label of the label stack is swapped with a new label and the packet is switched on the outgoing data link. An LSR that pushes labels onto a packet that was not labeled yet is called an imposing LSR because it is the first LSR to impose labels onto the packet. One that is doing imposition is an ingress LSR. An LSR that removes all labels from Supervisor: Nguyễn Đức Quang QoS over MPLS for Hutech network Student: Trần Quang Hải Đăng - 18 - the labeled packet before switching out the packet is a disposing LSR. One that does disposition is an egress LSR. 2.2.4. Label Switch Path. A label switched path (LSP) is a sequence of LSRs that switch a labeled packet through an MPLS network or part of an MPLS network. Basically, the LSP is the path through the MPLS network or a part of it that packets take. The first LSR of an LSP is the ingress LSR for that LSP, whereas the last LSR of the LSP is the egress LSR. All the LSRs in between the ingress and egress LSRs are the intermediate LSRs. Figure 2.4- Label Switch Path 2.2.5. Forwarding Equivalent Class. A Forwarding Equivalence Class (FEC) is a group or flow of packets that are forwarded along the same path and are treated the same with regard to the forwarding treatment. All packets belonging to the same FEC have the same label. However, not all packets that have the