Chapter 4. Advanced Internetworking. 4.3 MPLS 4.4 Mobile IP

Size: px
Start display at page:

Download "Chapter 4. Advanced Internetworking. 4.3 MPLS 4.4 Mobile IP"

Transcription

1 Computer Networks: A Systems Approach, 5e Larry L. Peterson and Bruce S. Davie Advanced Internetworking 4.3 MPLS 4.4 Mobile IP Copyright 2, Elsevier Inc. All rights Reserved 4.3 MPLS (Multi-Protocol Label Switching) Combining some properties of virtual circuits (VC) with the flexibility and robustness of datagrams. What are the strengths and weaknesses of the two packet switching technologies: VC Datagram 2

2 4.3 MPLS (Multi-Protocol Label Switching) What are the strengths and weaknesses of the two packet switching technologies? VC Short, fixed-length labels (Fast) Labels have local scope (only known by up- and down-stream neighbors) Datagram Globally known (IP) Matured technology Flexible, extensible MPLS Three major uses Enable non-ip devices: To enable IP capabilities on devices that do not have the capability to forward IP datagrams Explicit Routes To forward IP datagrams along explicit routes routes pre-calculated, with some preferences, constraints, etc. VPN support 4 2

3 4.3. Destination-Based Forwarding MPLS-enabled router allocates a label for each prefix in its routing table Advertise both label and prefix to its neighboring routers (Label Distribution Protocols) R Pr efix Interface Pr efix Interface.../ / Destination-Based Forwarding (a) allocates labels and advertises bindings to R. (b) R stores the received labels in a table R Prefix Interface R Prefix Interface Label = 5, Prefix =.. Remote Label 5 6 Label Prefix Interface (a) Label Prefix Interface (b) /24.3.3/24../24.3.3/24 6 3

4 4.5. Destination-Based Forwarding (c) advertises another binding, and stores the received label in a table. R is the label edge router (LER) LER performs a complete IP lookup on arriving IP datagrams, then applies labels to them as a result of the lookup. R Remote Prefix Interface Label Label = 24, Prefix = Label Prefix Interface Remote Label../24.3.3/ What s been accomplished? never needs to examine IP address; only the label. IP prefix is variable length Use longest prefix match Now use exact match algorithm: much simpler Enable non-ip devices to forward IP datagrams. Such as ATM (note: no hardware changes) These are called LSR (label switching routers) Also has been applied to optical switches 8 4

5 4.3. Where are the labels? Two common methods: (a) (b) ATM VPI/VCI Shim, inserted between layer 2 header and the IP header (or other layer-3 header) ATM cell header GFC Shim header (for PPP, Ethernet, etc.) VPI Label PPP header VCI PTI Label header CLP HEC DATA Layer 3 header Result: Overlay network: A mixed network of IP, LSR, ATM In an overlay network, each router potentially connects with all other routers via VC. (Shown only R s connection.) (a) R has five routing adjacencies (,, R6) (b) Now R has only one adjacency; LSR. MPLS leads to significant reduction in routing adjacencies. ATM: only software change GMPLS: optical switches R R LSR (a) LS LS R6 R5 R6 R5 (b) 5

6 4.3.2 Explicit Routing Explicit routing allows explicit routes to be established (not easy in native IP). Allows policy implementation Use RSVP to establish path/connection Allows traffic engineering Fat re-route (pre-calculation of backup path to avoid some links) CSPF (Constrained shortest path first) R R6 R7 R VPN and Tunnels Layer-2 VPN: MPLS is used to tunnel layer-2 data Such as ATM cells or Ethernet frames MPLS-enabled IP routers can emulate ATM VC (pseudowire emulation) What does an MPLS tunnel look like? ATM cells arrive ATM cells sent Head Tail Cells sent into tunnel at head Tunneled data arrives at tail 2 6

7 4.3.3 What does an MPLS tunnel look like? The header router needs to be configured with the incoming port, incoming VCI, demultiplexing label for this emulated circuit, and the address of the tunnel end router. The tail end router needs to be configured with the outgoing port, outgoing VCI, and demultiplexing label What does an MPLS tunnel look like? Fig Forward ATM cells along a tunnel Note that labels may be stacked Main advantage of MPLS: shorter 6. ATM tunnel cells sent 22 header. ATM cells arrive Head 2. Demux label added DL 3. Tunnel label added TL DL Tail DL TL DL 5. Demux label examined 4. Packet is forwarded to tail 4 7

8 Layer 3 VPN also uses stack of MPLS to tunnel packets across an IP network ISP creates an illusion for each customer that there are no other customers on the network. Which layer is MPLS? VPN and Tunnels VPN A /Site 2 VPN B /Site VPN B /Site 2 Provider network VPN A /Site VPN A /Site 3 VPN B /Site Routing Among Mobile Devices See Fig Mobile IP home agent Router located on the home network of the mobile hosts home address The permanent IP address of the mobile host. Has a network number equal to that of the home network and thus of the home agent foreign agent Router located on a network to which the mobile node attaches itself when it is away from its home network 6 8

9 Routing for Mobile Hosts Problem of delivering a packet to the mobile node How does the home agent intercept a packet that is destined for the mobile node? Proxy ARP How does the home agent then deliver the packet to the foreign agent? IP tunnel Care-of-address How does the foreign agent deliver the packet to the mobile node? 7 Routing for Mobile Hosts Route optimization in Mobile IP The route from the sending node to mobile node can be significantly sub-optimal One extreme example The mobile node and the sending node are on the same network, but the home network for the mobile node is on the far side of the Internet Triangle Routing Problem Solution Let the sending node know the care-of-address of the mobile node. The sending node can create its own tunnel to the foreign agent Home agent sends binding update message The sending node creates an entry in the binding cache The binding cache may become out-of-date The mobile node moved to a different network Foreign agent sends a binding warning message 8 9

10 Summary We have looked at the issues of scalability in routing in the Internet We have discussed IPV6 We have discussed Multicasting We have discussed Mobile IP # Subtitle 9

Label Switching. The idea. Add a small label (sometimes called a tag ) on the front of a packet and route the packet based on the label. cs670.

Label Switching. The idea. Add a small label (sometimes called a tag ) on the front of a packet and route the packet based on the label. cs670. Label Switching The idea Add a small label (sometimes called a tag ) on the front of a packet and route the packet based on the label label How it works IP IP payload When the packet reaches a router,

More information

4.2 Multicast IP supports multicast to support one-to-many (radio, news, IP multicast was originally a many-to-many (any source MC or

4.2 Multicast IP supports multicast to support one-to-many (radio, news, IP multicast was originally a many-to-many (any source MC or CS475 Networks Lecture 14 Chapter 4 Advanced Internetworking Assignments Reading for Lecture 15: Sections 5.1-5.2 Homework 5, Wireshark Project 3 posted, due next Thursday; Programming Project 3 posted,

More information

Computer Network Architectures and Multimedia. Guy Leduc. Chapter 2 MPLS networks. Chapter 2: MPLS

Computer Network Architectures and Multimedia. Guy Leduc. Chapter 2 MPLS networks. Chapter 2: MPLS Computer Network Architectures and Multimedia Guy Leduc Chapter 2 MPLS networks Chapter based on Section 5.5 of Computer Networking: A Top Down Approach, 6 th edition. Jim Kurose, Keith Ross Addison-Wesley,

More information

Internetworking Part 1

Internetworking Part 1 CMPE 344 Computer Networks Spring 2012 Internetworking Part 1 Reading: Peterson and Davie, 3.1 22/03/2012 1 Not all networks are directly connected Limit to how many hosts can be attached Point-to-point:

More information

MPLS MULTI PROTOCOL LABEL SWITCHING OVERVIEW OF MPLS, A TECHNOLOGY THAT COMBINES LAYER 3 ROUTING WITH LAYER 2 SWITCHING FOR OPTIMIZED NETWORK USAGE

MPLS MULTI PROTOCOL LABEL SWITCHING OVERVIEW OF MPLS, A TECHNOLOGY THAT COMBINES LAYER 3 ROUTING WITH LAYER 2 SWITCHING FOR OPTIMIZED NETWORK USAGE MPLS Multiprotocol MPLS Label Switching MULTI PROTOCOL LABEL SWITCHING OVERVIEW OF MPLS, A TECHNOLOGY THAT COMBINES LAYER 3 ROUTING WITH LAYER 2 SWITCHING FOR OPTIMIZED NETWORK USAGE Peter R. Egli 1/21

More information

Telematics Chapter 7: MPLS

Telematics Chapter 7: MPLS Telematics Chapter 7: MPLS User watching video clip Beispielbild Application Layer Presentation Layer Session Layer Transport Layer Server with video clips Application Layer Presentation Layer Session

More information

Tag Switching. Background. Tag-Switching Architecture. Forwarding Component CHAPTER

Tag Switching. Background. Tag-Switching Architecture. Forwarding Component CHAPTER CHAPTER 23 Tag Switching Background Rapid changes in the type (and quantity) of traffic handled by the Internet and the explosion in the number of Internet users is putting an unprecedented strain on the

More information

MPLS/Tag Switching. Background. Chapter Goals CHAPTER

MPLS/Tag Switching. Background. Chapter Goals CHAPTER 28 CHAPTER Chapter Goals Understand the advantages of MPLS. Learn the components of an MPLS system. Compare and contrast MPLS and hop-by-hop routing. Describe the two methods of label distribution. Explain

More information

COMP9332 Network Routing & Switching

COMP9332 Network Routing & Switching COMP9332 Network Routing & Switching Switching in IP Networks with MPLS http://www.cse.unsw.edu.au/~cs9332 1 Lecture Overview This lecture introduces the concept of switching, which allows faster processing

More information

Multi Protocol Label Switching (an introduction) Karst Koymans. Thursday, March 12, 2015

Multi Protocol Label Switching (an introduction) Karst Koymans. Thursday, March 12, 2015 .. MPLS Multi Protocol Label Switching (an introduction) Karst Koymans Informatics Institute University of Amsterdam (version 4.3, 2015/03/09 13:07:57) Thursday, March 12, 2015 Karst Koymans (UvA) MPLS

More information

Multiprotocol Label Switching (MPLS) on Cisco Routers

Multiprotocol Label Switching (MPLS) on Cisco Routers Multiprotocol Label Switching (MPLS) on Cisco Routers This document describes commands for configuring and monitoring Multiprotocol Label Switching (MPLS) functionality on Cisco routers and switches. This

More information

MPLS etc.. MPLS is not alone TEST. 26 April 2016 AN. Multi-Protocol Label Switching MPLS-TP FEC PBB-TE VPLS ISIS-TE MPƛS GMPLS SR RSVP-TE OSPF-TE PCEP

MPLS etc.. MPLS is not alone TEST. 26 April 2016 AN. Multi-Protocol Label Switching MPLS-TP FEC PBB-TE VPLS ISIS-TE MPƛS GMPLS SR RSVP-TE OSPF-TE PCEP Multi-Protocol Label Switching MPLS-TP FEC VPLS PBB-TE MPLS etc.. MPLS is not alone LDP MPLS-TE LABEL MP-BGP LSP TAG H-VPLS 26 April 2016 AN TEST GMPLS SR T-MPLS ISIS-TE MPƛS OSPF-TE PCEP Multi-Protocol

More information

LARGE SCALE IP ROUTING LECTURE BY SEBASTIAN GRAF

LARGE SCALE IP ROUTING LECTURE BY SEBASTIAN GRAF LARGE SCALE IP ROUTING LECTURE BY SEBASTIAN GRAF MODULE 05 MULTIPROTOCOL LABEL SWITCHING (MPLS) AND LABEL DISTRIBUTION PROTOCOL (LDP) 1 by Xantaro IP Routing In IP networks, each router makes an independent

More information

MPLS Multi-protocol label switching Mario Baldi Politecnico di Torino (Technical University of Torino)

MPLS Multi-protocol label switching Mario Baldi Politecnico di Torino (Technical University of Torino) MPLS Multi-protocol label switching Mario Baldi Politecnico di Torino (Technical University of Torino) http://staff.polito.it/mario.baldi MPLS - 1 From MPLS Forum Documents MPLS is the enabling technology

More information

Outline. Circuit Switching. Circuit Switching : Introduction to Telecommunication Networks Lectures 13: Virtual Things

Outline. Circuit Switching. Circuit Switching : Introduction to Telecommunication Networks Lectures 13: Virtual Things 8-5: Introduction to Telecommunication Networks Lectures : Virtual Things Peter Steenkiste Spring 05 www.cs.cmu.edu/~prs/nets-ece Outline Circuit switching refresher Virtual Circuits - general Why virtual

More information

سوي يچينگ و مسيريابي در شبكه

سوي يچينگ و مسيريابي در شبكه سوي يچينگ و مسيريابي در شبكه دكتر فرهاد فغاني استاديار دانشكده مهندسي برق قسمت ششم : Multi-Protocol Label Switching (MPLS) 1 One of the many ways of getting from A to B: BROADCAST: Go everywhere, stop

More information

Copyright 2010, Elsevier Inc. All rights Reserved

Copyright 2010, Elsevier Inc. All rights Reserved Computer Networks: A Systems Approach, 5e Larry L. Peterson and Bruce S. Davie C 3 Internetworking Copyright 2010, Elsevier Inc. All rights Reserved Switching and Forwarding Store-and-Forward Switches

More information

Internet Multicast Routing

Internet Multicast Routing Internet Multicast Routing. group addressing class D IP addresses 1110 Multicast Group ID. link layer multicast 28 bits. two protocol functions group management IGMP route establishment DVMRP, MOSPF, CBT,

More information

Multiprotocol Label Switching (MPLS) on Cisco Routers

Multiprotocol Label Switching (MPLS) on Cisco Routers Multiprotocol Label Switching (MPLS) on Cisco Routers Feature History Release 11.1CT 12.1(3)T 12.1(5)T 12.0(14)ST 12.0(21)ST 12.0(22)S Modification The document introduced MPLS and was titled Tag Switching

More information

Multiprotocol Label Switching (MPLS)

Multiprotocol Label Switching (MPLS) Multiprotocol Label Switching (MPLS) Petr Grygárek rek 1 Technology Basics Integrates label-based forwarding paradigm with network layer routing label forwarding + label swapping similar to ATM/FR switching

More information

Multiprotocol Label Switching

Multiprotocol Label Switching Multiprotocol Label Switching Multiprotocol Label Switching (MPLS) is a mechanism in highperformance telecommunications networks which directs and carries data from one network node to the next with the

More information

Virtual Link Layer : Fundamentals of Computer Networks Bill Nace

Virtual Link Layer : Fundamentals of Computer Networks Bill Nace Virtual Link Layer 14-740: Fundamentals of Computer Networks Bill Nace Material from Computer Networking: A Top Down Approach, 6 th edition. J.F. Kurose and K.W. Ross Administrivia 3 Lectures left HW #2

More information

Concepts and Operation of MPLS VPNs. Francisco Bolanos

Concepts and Operation of MPLS VPNs. Francisco Bolanos Concepts and Operation of MPLS VPNs Francisco Bolanos fbolanos@cisco.com 2001, Cisco Systems, Inc. All rights reserved. 1 Agenda MPLS Concepts Label Structure Label assignment and distribution RD, RT and

More information

Multi Protocol Label Switching

Multi Protocol Label Switching MPLS Multi-Protocol Label Switching Andrea Bianco Telecommunication Network Group firstname.lastname@polito.it http://www.telematica.polito.it/ Network Management and QoS Provisioning - 1 MPLS: introduction

More information

Ahmed Benallegue RMDCN workshop on the migration to IP/VPN 1/54

Ahmed Benallegue RMDCN workshop on the migration to IP/VPN 1/54 MPLS Technology Overview Ahmed Benallegue A.Benallegue@ecmwf.int RMDCN workshop on the migration to IP/VPN 1/54 Plan 1. MPLS basics 2. The MPLS approach 3. Label distribution RSVP-TE 4. Traffic Engineering

More information

IPv6 Protocols and Networks Hadassah College Spring 2018 Wireless Dr. Martin Land

IPv6 Protocols and Networks Hadassah College Spring 2018 Wireless Dr. Martin Land IPv6 1 IPv4 & IPv6 Header Comparison IPv4 Header IPv6 Header Ver IHL Type of Service Total Length Ver Traffic Class Flow Label Identification Flags Fragment Offset Payload Length Next Header Hop Limit

More information

MPLS Multi-Protocol Label Switching

MPLS Multi-Protocol Label Switching MPLS Multi-Protocol Label Switching Andrea Bianco Telecommunication Network Group firstname.lastname@polito.it http://www.telematica.polito.it/ Computer Networks Design and Management - 1 MPLS: introduction

More information

Multiprotocol Label Switching (MPLS) on Cisco Routers

Multiprotocol Label Switching (MPLS) on Cisco Routers Multiprotocol Label Switching (MPLS) on Cisco Routers This document describes commands for configuring and monitoring Multiprotocol Label Switching (MPLS) functionality on Cisco routers and switches. This

More information

MPLS. Multi-Protocol Label Switching

MPLS. Multi-Protocol Label Switching MPLS Multi-Protocol Label Switching Agenda Review ATM IP over WAN Problems (Traditional Approach) MPLS Principles Label Distribution Methods MPLS Details (Cisco) RFCs 2012, D.I. Lindner MPLS v4.6 2 ATM

More information

MPLS Intro. Cosmin Dumitru March 14, University of Amsterdam System and Network Engineering Research Group ...

MPLS Intro. Cosmin Dumitru March 14, University of Amsterdam System and Network Engineering Research Group ... MPLS Intro Cosmin Dumitru c.dumitru@uva.nl University of Amsterdam System and Network Engineering Research Group March 14, 2011 Disclaimer Information presented in these slides may be slightly biased towards

More information

Institute of Computer Technology - Vienna University of Technology. L85 - Multiprotocol Label Switching

Institute of Computer Technology - Vienna University of Technology. L85 - Multiprotocol Label Switching MPLS Multi-Protocol Label Switching Agenda Review Datagram- versus Virtual Call Service IP over WAN Problems (Traditional Approach) MPLS Principles Label Distribution Methods MPLS Details (Cisco) RFC s

More information

EEC-684/584 Computer Networks

EEC-684/584 Computer Networks EEC-684/584 Computer Networks Lecture 14 wenbing@ieee.org (Lecture nodes are based on materials supplied by Dr. Louise Moser at UCSB and Prentice-Hall) Outline 2 Review of last lecture Internetworking

More information

MPLS, THE BASICS CSE 6067, UIU. Multiprotocol Label Switching

MPLS, THE BASICS CSE 6067, UIU. Multiprotocol Label Switching MPLS, THE BASICS CSE 6067, UIU Multiprotocol Label Switching Basic Concepts of MPLS 2 Contents Drawbacks of Traditional IP Forwarding Basic MPLS Concepts MPLS versus IP over ATM Traffic Engineering with

More information

MPLS Core Networks Николай Милованов/Nikolay Milovanov

MPLS Core Networks Николай Милованов/Nikolay Milovanov Label Assignment and Distribution Николай Милованов/Nikolay Milovanov Contents Label Assignment and Distribution Typical Label Distribution in Packet-mode MPLS Convergence in Packet-mode MPLS MPLS Label

More information

MPLS Label Distribution Protocol (LDP)

MPLS Label Distribution Protocol (LDP) MPLS Label Distribution Protocol (LDP) Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP) enables peer label switch routers (LSRs) in an MPLS network to exchange label binding information

More information

MULTIPROTOCOL LABEL SWITCHING PROTOCOL

MULTIPROTOCOL LABEL SWITCHING PROTOCOL Int. J. of Computer and Communications Vol. 1, No. 1, March 2011 Copyright Mind Reader Publications www.ijcc.yolasite.com MULTIPROTOCOL LABEL SWITCHING PROTOCOL 1 Anuja Khodaskar, 2 Dr.S.A.Ladhake 1 Lecturer,

More information

Internetworking: Global Internet and MPLS. Hui Chen, Ph.D. Dept. of Engineering & Computer Science Virginia State University Petersburg, VA 23806

Internetworking: Global Internet and MPLS. Hui Chen, Ph.D. Dept. of Engineering & Computer Science Virginia State University Petersburg, VA 23806 Internetworking: Global Internet and MPLS Hui Chen, Ph.D. Dept. of Engineering & Computer Science Virginia State University Petersburg, VA 23806 10/19/2016 CSCI 445 Fall 2016 1 Acknowledgements Some pictures

More information

IPv6. IPv4 & IPv6 Header Comparison. Types of IPv6 Addresses. IPv6 Address Scope. IPv6 Header. IPv4 Header. Link-Local

IPv6. IPv4 & IPv6 Header Comparison. Types of IPv6 Addresses. IPv6 Address Scope. IPv6 Header. IPv4 Header. Link-Local 1 v4 & v6 Header Comparison v6 Ver Time to Live v4 Header IHL Type of Service Identification Protocol Flags Source Address Destination Address Total Length Fragment Offset Header Checksum Ver Traffic Class

More information

2D1490 p MPLS, RSVP, etc. Olof Hagsand KTHNOC/NADA

2D1490 p MPLS, RSVP, etc. Olof Hagsand KTHNOC/NADA 2D1490 p4 2007 MPLS, RSVP, etc Olof Hagsand KTHNOC/NADA Literature Handouts: MPLS-Enabled applications (Minei, Lucek). Parts of Section 1. JunOS Cookbook: Chapter 14 Background MPLS - Multiprotocol Label

More information

C13a: Packet Switching

C13a: Packet Switching CISC 7332X T6 C13a: Packet Switching Hui Chen Department of Computer & Information Science CUNY Brooklyn College 1 Acknowledgements Some pictures used in this presentation were obtained from the Internet

More information

Advanced Telecommunications

Advanced Telecommunications ternet Routing - MPLS By Richard Harris MPLS Presentation line troduction Problems of ternet size Methods for overcoming potential problems What is MPLS? Overview MPLS terminology MPLS Architecture The

More information

Da t e: August 2 0 th a t 9: :00 SOLUTIONS

Da t e: August 2 0 th a t 9: :00 SOLUTIONS Interne t working, Examina tion 2G1 3 0 5 Da t e: August 2 0 th 2 0 0 3 a t 9: 0 0 1 3:00 SOLUTIONS 1. General (5p) a) Place each of the following protocols in the correct TCP/IP layer (Application, Transport,

More information

TOC: Switching & Forwarding

TOC: Switching & Forwarding TOC: Switching & Forwarding Why? Switching Techniques Switch Characteristics Switch Examples Switch Architectures Summary Why? Direct vs. Switched Networks: Single link Switches Direct Network Limitations:

More information

Virtual Link Layer : Fundamentals of Computer Networks Bill Nace

Virtual Link Layer : Fundamentals of Computer Networks Bill Nace Virtual Link Layer 14-740: Fundamentals of Computer Networks Bill Nace Material from Computer Networking: A Top Down Approach, 6 th edition. J.F. Kurose and K.W. Ross Administrivia 3 Lectures left HW #2

More information

Introduction to MPLS

Introduction to MPLS troduction to MPLS Session 2 Copyright Printed in USA. Agenda Background Technology Basics What is MPLS? Where Is it Used? Label Distribution in MPLS Networks LDP, RSVP, BGP Building MPLS Based Services

More information

TOC: Switching & Forwarding

TOC: Switching & Forwarding TOC: Switching & Forwarding Why? Switching Techniques Switch Characteristics Switch Examples Switch Architectures Summary TOC Switching Why? Direct vs. Switched Networks: n links Single link Direct Network

More information

Multiprotocol Label Switching Overview

Multiprotocol Label Switching Overview This chapter describes the Multiprotocol Label Switching (MPLS) distribution protocol. MPLS is a high-performance packet forwarding technology that integrates the performance and traffic management capabilities

More information

Master Course Computer Networks IN2097

Master Course Computer Networks IN2097 Chair for Network Architectures and Services Prof. Carle Department for Computer Science TU München Master Course Computer Networks IN2097 Prof. Dr.-Ing. Georg Carle Christian Grothoff, Ph.D. Chair for

More information

This chapter covers the following topics: Label Distribution Protocol (LDP) AToM operations

This chapter covers the following topics: Label Distribution Protocol (LDP) AToM operations This chapter covers the following topics: Label Distribution Protocol (LDP) AToM operations C H A P T E R 6 Understanding Any Transport over MPLS To provide Layer 2 VPN services over an IP/Multiprotocol

More information

Configuring ATM QoS or Shaping

Configuring ATM QoS or Shaping Configuring ATM QoS or Shaping M7i, M1i, M4e, M12, and M32 routers with 4-port channelized OC3/STM1 Circuit Emulation PICs and 12-port T1/E1 Circuit Emulation PICs support ATM pseudowire service with QoS

More information

Securizarea Calculatoarelor și a Rețelelor 32. Tehnologia MPLS VPN

Securizarea Calculatoarelor și a Rețelelor 32. Tehnologia MPLS VPN Platformă de e-learning și curriculă e-content pentru învățământul superior tehnic Securizarea Calculatoarelor și a Rețelelor 32. Tehnologia MPLS VPN MPLS VPN 5-ian-2010 What this lecture is about: IP

More information

WORKSHOP MPLS.

WORKSHOP MPLS. WORKSHOP MPLS fbolanos@cisco.com 2001, Cisco Systems, Inc. All rights reserved. 1 MPLS Concepts Label Structure Label assignment and distribution ATM LSRs Loop prevention RD, RT and VRF instances Service

More information

Migration Strategies for IP Service Growth: Cell-switched MPLS or IP-routed MPLS

Migration Strategies for IP Service Growth: Cell-switched MPLS or IP-routed MPLS White Paper Migration Strategies for IP Service Growth: Cell-switched MPLS or IP-routed MPLS Chuck Semeria Marketing Engineer Juniper Networks, Inc. 1194 North Mathilda Avenue Sunnyvale, CA 94089 USA 408

More information

MPLS. 9 March 2018 AN

MPLS. 9 March 2018 AN MPLS 9 March 2018 AN Multi-Protocol Label Switching MPLS-TP MP-BGP H-VPLS OSPF-TE LIB MPLS is not alone LSP ISIS-TE EVPN GMPLS MPLS-TE T-MPLS LFIB LABEL LDP TAG Used in many (most?) provider networks to

More information

MPLS опорни мрежи MPLS core networks

MPLS опорни мрежи MPLS core networks MPLS опорни мрежи MPLS core networks Николай Милованов/Nikolay Milovanov http://niau.org Objectives Identify the drawbacks of traditional IP routing Describe basic MPLS concepts and LSR types. MPLS Labels

More information

MPLS etc.. 9 May 2017 AN

MPLS etc.. 9 May 2017 AN MPLS etc.. 9 May 2017 AN Multi-Protocol Label Switching MPLS-TP FEC VPLS PBB-TE LDP MPLS-TE LABEL MP-BGP MPLS is not alone LSP TAG H-VPLS GMPLS ISIS-TE MPƛS RSVP-TE SR OSPF-TE T-MPLS PCEP Multi-Protocol

More information

MPLS Label Distribution Protocol (LDP)

MPLS Label Distribution Protocol (LDP) MPLS Label Distribution Protocol (LDP) Feature History Release 12.0(10)ST 12.0(14)ST 12.1(2)T 12.1(8a)E 12.2(2)T 12.2(4)T 12.0(21)ST 12.0(22)S Modification This feature was introduced in Cisco IOS Release

More information

Switching / Forwarding

Switching / Forwarding Switching / Forwarding A switch is a device that allows interconnection of links to form larger networks Multi-input, multi-output device Packet switch transfers packets from an input to one or more outputs

More information

Designing Multiprotocol Label Switching Networks

Designing Multiprotocol Label Switching Networks TOPICS IN INTERNET TECHNOLOGY Designing Multiprotocol Label Switching Networks Jeremy Lawrence, Cisco Systems 1 s are also known as label edge routers. Most commercially available LSRs have at least limited

More information

Internet Routing - MPLS. By Richard Harris

Internet Routing - MPLS. By Richard Harris Internet Routing - MPLS By Richard Harris MPLS Presentation Outline Introduction Problems of Internet size Methods for overcoming potential problems What is MPLS? Overview MPLS terminology MPLS Architecture

More information

PASS4TEST. IT Certification Guaranteed, The Easy Way! We offer free update service for one year

PASS4TEST. IT Certification Guaranteed, The Easy Way!   We offer free update service for one year PASS4TEST IT Certification Guaranteed, The Easy Way \ http://www.pass4test.com We offer free update service for one year Exam : 642-691 Title : CCIP BGP + MPLS Exam (BGP + MPLS) Vendors : Cisco Version

More information

IP Datagram Service MPLS. Virtual Call Call Request (CR) Agenda

IP Datagram Service MPLS. Virtual Call Call Request (CR) Agenda Datenkommunikation 384.8 - SS 29 Datenkommunikation 384.8 - SS 29 IP Datagram Service IP Host R IP Router R2 Destination Net Hop A R B R4 C.. R3.. R3 A2 B A2 B MPLS Multi-Protocol Label Switching User

More information

11. IP Mobility 최 양 희 서울대학교 컴퓨터공학부

11. IP Mobility 최 양 희 서울대학교 컴퓨터공학부 11. IP Mobility Introduction Terminal Mobility Person Mobility Network Mobility Internet 2002 Yanghee Choi 2 Mobile IP : Why IP addressing scheme optimized for stationary environment point of attachment

More information

Connection Oriented Networking MPLS and ATM

Connection Oriented Networking MPLS and ATM ÉCOLE POLYTECHNIQUE FÉDÉRALE DE LAUSANNE Connection Oriented Networking MPLS and ATM Jean-Yves Le Boudec Fall 0 Contents. Connection Oriented network layer. ATM.MPLS (Multi Protocol Label Switching) .

More information

EPL606. Internetworking. Part 2a. 1Network Layer

EPL606. Internetworking. Part 2a. 1Network Layer EPL606 Internetworking Part 2a The majority of the slides in this course are adapted from the accompanying slides to the books by Larry Peterson and Bruce Davie and by Jim Kurose and Keith Ross. Additional

More information

Multiprotocol Label Switching (MPLS)

Multiprotocol Label Switching (MPLS) Multiprotocol Label Switching (MPLS) Petr Grygárek rek 1 Technology in Brief Inserts underlying label-based forwarding layer under traditional network layer routing label forwarding + label swapping similar

More information

The IETF working group information (and list of related draft documents) for MPLS can be found at:

The IETF working group information (and list of related draft documents) for MPLS can be found at: Pagina 1 di 7 Introduction to MPLS Peter J. Welcher Introduction A note from my employer: Chesapeake Network Solutions has changed names to Mentor Technologies. The intent is to clarify our identity for

More information

MPLS (Multi-Protocol Label Switching)

MPLS (Multi-Protocol Label Switching) Fixed Internetworking Protocols and Networks MPLS (Multi-Protocol Label Switching) Rune Hylsberg Jacobsen Aarhus School of Engineering rhj@iha.dk 1 2011 ITIFN Circuit switching Dedicated communication

More information

MultiProtocol Label Switching - MPLS ( RFC 3031 )

MultiProtocol Label Switching - MPLS ( RFC 3031 ) Outline MultiProtocol Label Switching - MPLS ( RFC 3031 ) 1. What is MPLS and how does it work? 2. What MPLS is used for? 3. Label Distribution Protocols 1 1. What is MPLS and how does it work? MPLS is

More information

MPLS AToM Overview. Documentation Specifics. Feature Overview

MPLS AToM Overview. Documentation Specifics. Feature Overview MPLS AToM Overview This document provides an introduction to MPLS AToM and includes the following sections: Documentation Specifics, page 14 Feature Overview, page 14 Benefits, page 26 What To Do Next,

More information

L8: Packet Switching. Hui Chen, Ph.D. Dept. of Engineering & Computer Science Virginia State University Petersburg, VA 23806

L8: Packet Switching. Hui Chen, Ph.D. Dept. of Engineering & Computer Science Virginia State University Petersburg, VA 23806 L8: Packet Switching Hui Chen, Ph.D. Dept. of Engineering & Computer Science Virginia State University Petersburg, VA 23806 1 Acknowledgements Some pictures used in this presentation were obtained from

More information

GMPLS Overview Generalized MPLS

GMPLS Overview Generalized MPLS GMPLS Overview Generalized MPLS Hanyang Univ ( jijung@hanyang.ac.kr ) Outline GMPLS Overview Draft-ietf-ccamp-gmpls-architecture-00.txt GMPLS IGP Extension Draft-ietf-ccamp-ospf-gmpls-extensions-00.txt

More information

Module 11a MPLS VPWS Configuration Lab (LDP)

Module 11a MPLS VPWS Configuration Lab (LDP) APNIC MPLS Workshop Lab Module 11a MPLS VPWS Configuration Lab (LDP) Objective: All the routers are pre-configured with basic interface, OSPF, BGP, MPLS Label Distribution Protocol (LDP) configuration

More information

Quality of Service in the Internet. QoS Parameters. Keeping the QoS. Leaky Bucket Algorithm

Quality of Service in the Internet. QoS Parameters. Keeping the QoS. Leaky Bucket Algorithm Quality of Service in the Internet Problem today: IP is packet switched, therefore no guarantees on a transmission is given (throughput, transmission delay, ): the Internet transmits data Best Effort But:

More information

ETSF05/ETSF10 Internet Protocols Network Layer Protocols

ETSF05/ETSF10 Internet Protocols Network Layer Protocols ETSF05/ETSF10 Internet Protocols Network Layer Protocols 2016 Jens Andersson Agenda Internetworking IPv4/IPv6 Framentation/Reassembly ICMPv4/ICMPv6 IPv4 to IPv6 transition VPN/Ipsec NAT (Network Address

More information

Introduction to Segment Routing

Introduction to Segment Routing Segment Routing (SR) is a flexible, scalable way of doing source routing. Overview of Segment Routing, page 1 How Segment Routing Works, page 2 Examples for Segment Routing, page 3 Benefits of Segment

More information

LARGE SCALE IP ROUTING LECTURE BY SEBASTIAN GRAF

LARGE SCALE IP ROUTING LECTURE BY SEBASTIAN GRAF LARGE SCALE IP ROUTING LECTURE BY SEBASTIAN GRAF MODULE 07 - MPLS BASED LAYER 2 SERVICES 1 by Xantaro MPLS BASED LAYER 2 VPNS USING MPLS FOR POINT-TO-POINT LAYER 2 SERVICES 2 by Xantaro Why are Layer-2

More information

On Distributed Communications, Rand Report RM-3420-PR, Paul Baran, August 1964

On Distributed Communications, Rand Report RM-3420-PR, Paul Baran, August 1964 The requirements for a future all-digital-data distributed network which provides common user service for a wide range of users having different requirements is considered. The use of a standard format

More information

Administrivia. Homework on class webpage If you are having problems following me in class (or doing the homework problems), please buy the textbook

Administrivia. Homework on class webpage If you are having problems following me in class (or doing the homework problems), please buy the textbook Administrivia Homework on class webpage If you are having problems following me in class (or doing the homework problems), please buy the textbook Project Discussion class_ gotcha Reading finally on webpage

More information

Packet Switching. Hongwei Zhang Nature seems to reach her ends by long circuitous routes.

Packet Switching. Hongwei Zhang  Nature seems to reach her ends by long circuitous routes. Problem: not all networks are directly connected Limitations of directly connected networks: limit on the number of hosts supportable limit on the geographic span of the network Packet Switching Hongwei

More information

MPLS Multi-protocol label switching Mario Baldi Politecnico di Torino (Technical University of Torino)

MPLS Multi-protocol label switching Mario Baldi Politecnico di Torino (Technical University of Torino) MPLS Multi-protocol label switching Mario Baldi Politecnico di Torino (Technical University of Torino) http://staff.polito.it/mario.baldi MPLS - 1 MPLS - 2 Copyright notice This set of transparencies,

More information

What You Will Learn By the end of this appendix, you should know and be able to explain the following:

What You Will Learn By the end of this appendix, you should know and be able to explain the following: What You Will Learn By the end of this appendix, you should know and be able to explain the following: What static MPLS labels are and how they can be used The difference between static MPLS bindings and

More information

MPLS Introduction. (C) Herbert Haas 2005/03/11

MPLS Introduction. (C) Herbert Haas 2005/03/11 MPLS Introduction MPLS (C) Herbert Haas 2005/03/11 Terminology LSR LER FEC LSP FIB LIB LFIB TIB PHP LDP TDP RSVP CR-LDP Label Switch Router Label Edge Router Forwarding Equivalent Class Label Switched

More information

MPLS VIRTUAL PRIVATE NETWORKS

MPLS VIRTUAL PRIVATE NETWORKS MPLS VIRTUAL PRIVATE NETWORKS A review of the implementation options for MPLS VPNs including the ongoing standardization work in the IETF MPLS Working Group November, 2000 Paul Brittain, European Product

More information

CS475 Networks Lecture 8 Chapter 3 Internetworking. Ethernet or Wi-Fi).

CS475 Networks Lecture 8 Chapter 3 Internetworking. Ethernet or Wi-Fi). Assignments Reading for Lecture 9: Section 3.3 3.2 Basic Internetworking (IP) Bridges and LAN switches from last section have limited ability CS475 Networks Lecture 8 Chapter 3 Internetworking is a logical

More information

Vendor: Alcatel-Lucent. Exam Code: 4A Exam Name: Alcatel-Lucent Multiprotocol Label Switching. Version: Demo

Vendor: Alcatel-Lucent. Exam Code: 4A Exam Name: Alcatel-Lucent Multiprotocol Label Switching. Version: Demo Vendor: Alcatel-Lucent Exam Code: 4A0-103 Exam Name: Alcatel-Lucent Multiprotocol Label Switching Version: Demo QUESTION 1 You wish to advertise LDP labels for all local networks; which is the most effective

More information

BROADBAND AND HIGH SPEED NETWORKS

BROADBAND AND HIGH SPEED NETWORKS BROADBAND AND HIGH SPEED NETWORKS INTRODUCTION ATM stands for Asynchronous Transfer Mode ATM is a flexible high bandwidth, low delay network technology that is: Capable of handling voice, video and data

More information

AToM (Any Transport over MPLS)

AToM (Any Transport over MPLS) I N D E X A AAL5 over MPLS operation, 459 460 configuration, 462 463 flowchart configuration, 461 PE router, 461 provider router, 461 verification, 463 465 AAL5 to VLAN Interworking, 515 517 AC (Attachment

More information

Syed Mehar Ali Shah 1 and Bhaskar Reddy Muvva Vijay 2* 1-

Syed Mehar Ali Shah 1 and Bhaskar Reddy Muvva Vijay 2* 1- International Journal of Basic and Applied Sciences Vol. 3. No. 4 2014. Pp. 163-169 Copyright by CRDEEP. All Rights Reserved. Full Length Research Paper Improving Quality of Service in Multimedia Applications

More information

CMSC 332 Computer Networks Network Layer

CMSC 332 Computer Networks Network Layer CMSC 332 Computer Networks Network Layer Professor Szajda CMSC 332: Computer Networks Where in the Stack... CMSC 332: Computer Network 2 Where in the Stack... Application CMSC 332: Computer Network 2 Where

More information

L2VPN Interworking. Finding Feature Information

L2VPN Interworking. Finding Feature Information Interworking is a transforming function that is required to interconnect two heterogeneous attachment circuits (ACs). Several types of interworking functions exist. The function that is used would depend

More information

MPLS Label Distribution Protocol (LDP)

MPLS Label Distribution Protocol (LDP) MPLS Label Distribution Protocol (LDP) First Published: January 1, 1999 Last Updated: May 1, 2008 Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP) enables peer label switch routers

More information

Implementing MPLS Forwarding

Implementing MPLS Forwarding All Multiprotocol Label Switching (MPLS) features require a core set of MPLS label management and forwarding services; the MPLS Forwarding Infrastructure (MFI) supplies these services. Feature History

More information

Module 10 Frame Relay and ATM

Module 10 Frame Relay and ATM Module 10 Frame Relay and ATM Lesson 34 ATM: Concepts And Header 10.2.1 INTRODUCTION IP has a varying packet size which causes no problem while multiplexing but makes switching difficult. ATM uses a fixed

More information

Trafffic Engineering 2015/16 1

Trafffic Engineering 2015/16 1 Traffic Engineering 2015/2016 Traffic Engineering: from ATM to MPLS fernando.silva@tecnico.ulisboa.pt Instituto Superior Técnico Trafffic Engineering 2015/16 1 Outline Traffic Engineering revisited Traffic

More information

MPLS VPN. 5 ian 2010

MPLS VPN. 5 ian 2010 MPLS VPN 5 ian 2010 What this lecture is about: IP CEF MPLS architecture What is MPLS? MPLS labels Packet forwarding in MPLS MPLS VPNs 3 IP CEF & MPLS Overview How does a router forward packets? Process

More information

COM 13 C 28 E May 2003 English only Original: English

COM 13 C 28 E May 2003 English only Original: English Question(s): 11/13 Source: Title: INTERNATIONAL TELECOMMUNICATION UNION TELECOMMUNICATION STANDARDIZATION SECTOR STUDY PERIOD 2001-2004 Editor STUDY GROUP 13 CONTRIBUTION 28 May 2003 English only Original:

More information

MPLS MPLS. Basically: 9 March 2018 AN. Multi-Protocol Label Switching. A bit of history. Multi-Protocol Label Switching.

MPLS MPLS. Basically: 9 March 2018 AN. Multi-Protocol Label Switching. A bit of history. Multi-Protocol Label Switching. Multi-Protocol Label Switching MPLS-TP MP-BGP H-VPLS OSPF-TE LIB MPLS MPLS is not alone LSP ISIS-TE EVPN GMPLS MPLS-TE 9 March 2018 AN T-MPLS LFIB LABEL LDP TAG Used in many (most?) provider networks to

More information

Last time. BGP policy. Broadcast / multicast routing. Link virtualization. Spanning trees. Reverse path forwarding, pruning Tunneling

Last time. BGP policy. Broadcast / multicast routing. Link virtualization. Spanning trees. Reverse path forwarding, pruning Tunneling Last time BGP policy Broadcast / multicast routing Spanning trees Source-based, group-shared, center-based Reverse path forwarding, pruning Tunneling Link virtualization Whole networks can act as an Internet

More information

Introduction to MPLS APNIC

Introduction to MPLS APNIC Introduction to MPLS APNIC Issue Date: [201609] Revision: [01] What is MPLS? 2 Definition of MPLS Multi Protocol Label Switching Multiprotocol, it supports ANY network layer protocol, i.e. IPv4, IPv6,

More information