5: DataLink Layer5-1 Cerf & Kahn’s Internetwork Architecture What is virtualized? r two layers of addressing: internetwork and local network r new layer.

Slides:

Advertisements

Similar presentations

MPLS: The Magic Behind the Myths Grenville Armitage (author) Scott Crosby (presenter)

Advertisements

1 IP Forwarding Relates to Lab 3. Covers the principles of end-to-end datagram delivery in IP networks.

11-1 Last time □ Distance vector link cost changes ♦ Count-to-infinity, poisoned reverse □ Hierarchical routing ♦ Autonomous Systems ♦ Inter-AS, Intra-AS.

Chapter 5 Link Layer Computer Networking: A Top Down Approach 6 th edition Jim Kurose, Keith Ross Addison-Wesley March 2012 A note on the use of these.

Internetworking II: MPLS, Security, and Traffic Engineering

Chapter 5 Link Layer Computer Networking: A Top Down Approach 6 th edition Jim Kurose, Keith Ross Addison-Wesley March 2012 A note on the use of these.

© Jörg Liebeherr ECE 1545 Packet-Switched Networks.

Chapter 5 Link Layer slides are modified from J. Kurose & K. Ross CPE 400 / 600 Computer Communication Networks Lecture 23.

Internetworking Introduction How Networks Differ How Networks Can Be Connected Concatenated Virtual Circuits Connectionless Internetworking Tunneling Fragmentation.

5: DataLink Layer ATM. Trouble compiling the project code on Ubuntu: r If you get the error: h_addr not a member of struct hostent In the file.

Link Layer & Physical Layer CPE 400 / 600 Computer Communication Networks Lecture 24.

4-1 Network layer r transport segment from sending to receiving host r on sending side encapsulates segments into datagrams r on rcving side, delivers.

1 ATM and MPLS ECS 152A. 2 Virtualization of networks Virtualization of resources: a powerful abstraction in systems engineering: r computing examples:

Chapter 4 Network Layer slides are modified from J. Kurose & K. Ross CPE 400 / 600 Computer Communication Networks Lecture 14.

10 - Network Layer. Network layer r transport segment from sending to receiving host r on sending side encapsulates segments into datagrams r on rcving.

MPLS Multiple Protocol Label Switching 2003/2/19.

CMPE 80N - Introduction to Networks and the Internet 1 CMPE 80N Winter 2004 Lecture 15 Introduction to Networks and the Internet.

1 Network Layer: Host-to-Host Communication. 2 Network Layer: Motivation Can we built a global network such as Internet by extending LAN segments using.

CMPE 80N - Introduction to Networks and the Internet 1 CMPE 80N Winter 2004 Lecture 14 Introduction to Networks and the Internet.

TCP/IP Protocol Suite 1 Chapter 3 Objectives Upon completion you will be able to: Underlying Technology Understand the different versions of wired Ethernet.

PPP, ATM, MPLS EECS 489 Computer Networks Z. Morley Mao Monday March 12, 2007 Acknowledgement: Some slides.

CS 5565 Network Architecture and Protocols Godmar Back Lecture 25.

McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 3 Underlying Technologies.

1 Multi-Protocol Label Switching (MPLS) presented by: chitralekha tamrakar (B.S.E.) divya krit tamrakar (B.S.E.) Rashmi shrivastava(B.S.E.) prakriti.

MPLS networking at PSP Co Multi-Protocol Label Switching Presented by: Hamid Sheikhghanbari 1.

Selecting a WAN Technology Lecture 4: WAN Devices &Technology.

Introduction 1 Lecture 23 Link Layer (Error Detection/Correction) slides are modified from J. Kurose & K. Ross University of Nevada – Reno Computer Science.

Chapter 5 Link Layer and LANs

Introduction 1 Lecture 26 Link Layer (PPP, Virtualization) slides are modified from J. Kurose & K. Ross University of Nevada – Reno Computer Science &

Introduction to Network Layer. Network Layer: Motivation Can we built a global network such as Internet by extending LAN segments using bridges? –No!

Link Layer 5.1 Introduction and services

End-to-end resource management in DiffServ Networks –DiffServ focuses on singal domain –Users want end-to-end services –No consensus at this time –Two.

Multi-protocol Label Switching Jiang Wu Computer Science Seminar 5400.

5: DataLink Layer5-1 VLANs. 5: DataLink Layer5-2 Introduction r Need to have different broadcast domains on the same physical network r E.g. Consider.

Introduction to WAN Technologies

Virtual Circuit Network. Network Layer 2 Network layer r transport segment from sending to receiving host r network layer protocols in every host, router.

LO1 Know types of Network Systems and Protocols. Wan Technologies.

Network – internet – part2  Address at diff. layers  Headers at diff. layers  Equipment at diff. layers.

5: Link Layer Part Link Layer r 5.1 Introduction and services r 5.2 Error detection and correction r 5.3Multiple access protocols r 5.4 Link-Layer.

Chapter 17 Connecting Devices And Virtual LANs 17.# 1

5: DataLink Layer5-1 Link Layer r 5.1 Introduction and services r 5.2 Error detection and correction r 5.3Multiple access protocols r 5.4 Link-Layer Addressing.

5: DataLink Layer5-1 Point to Point Data Link Control r one sender, one receiver, one link: easier than broadcast link: m no Media Access Control m no.

Section #7: Getting Data from Point A to Point B.

5: DataLink Layer5-1 Virtualization of networks Virtualization of resources: powerful abstraction in systems engineering: r computing examples: virtual.

3. INTERNETWORKING (PART 1) Rocky K. C. Chang Department of Computing The Hong Kong Polytechnic University 18 February

Cloud Computing inside Virtualized Datacenters V. Arun College of Computer Science University of Massachusetts Amherst 1.

MPLS Introduction Computer Networks 2007 Week 9 Lecture 1 by Donald Neal.

Advanced Computer Networks

Chapter 3: Packet Switching (overview)

Multiprotocol Label Switching

Chapter 5 Link Layer A note on the use of these ppt slides:

Virtualization of networks

Link Layer 5.1 Introduction and services

A quick intro to networking

Announcement Written Homework Assignment 2: Due Fri. November 18, 11:59pm Programming Assignment 3: Due Mon. Nov ember 14, 11:59pm Group of three students.

Chapter 5 Link Layer and LANs

CS 5565 Network Architecture and Protocols

3. Internetworking (part 1)

IP Forwarding Covers the principles of end-to-end datagram delivery in IP networks.

CS4470 Computer Networking Protocols

IP Forwarding Relates to Lab 3.

IP Forwarding Relates to Lab 3.

Network Core and QoS.

Packet Switch Architectures

Network Layer I have learned from life no matter how far you go

IP Forwarding Relates to Lab 3.

Packet Switch Architectures

Network Core and QoS.

Presentation transcript:

5: DataLink Layer5-1 Cerf & Kahn’s Internetwork Architecture What is virtualized? r two layers of addressing: internetwork and local network r new layer (IP) makes everything homogeneous at internetwork layer r underlying local network technology m cable m satellite m 56K telephone modem m today: ATM, MPLS … “invisible” at internetwork layer. Looks like a link layer technology to IP!

5: DataLink Layer5-2 ATM and MPLS r ATM, MPLS separate networks in their own right m different service models, addressing, routing from Internet r viewed by Internet as logical link connecting IP routers m just like dialup link is really part of separate network (telephone network) r ATM, MPLS: of technical interest in their own right

5: DataLink Layer5-3 Multiprotocol label switching (MPLS) r initial goal: speed up IP forwarding by using fixed length label (instead of IP address) to do forwarding m borrowing ideas from Virtual Circuit (VC) approach m but IP datagram still keeps IP address! PPP or Ethernet header IP header remainder of link-layer frame MPLS header label Exp S TTL

5: DataLink Layer5-4 MPLS capable routers r a.k.a. label-switched router r forwards packets to outgoing interface based only on label value (don’t inspect IP address) m MPLS forwarding table distinct from IP forwarding tables r signaling protocol needed to set up forwarding m forwarding possible along paths that IP alone would not allow (e.g., source-specific routing) !! m use MPLS for traffic engineering r must co-exist with IP-only routers

5: DataLink Layer5-5 R1 R2 D R3 R4 R A R6 in out out label label dest interface 6 - A 0 in out out label label dest interface 10 6 A D 0 in out out label label dest interface 10 A 0 12 D 0 1 in out out label label dest interface 8 6 A A 1 MPLS forwarding tables