CASP Cross- Application Signaling Protocol
|
|
- Gabriella Hodge
- 5 years ago
- Views:
Transcription
1 CASP Cross- Application Signaling Protocol Henning Schulzrinne August 27, 2002
2 Overview Protocol properties Message delivery Transport protocol usage Message forwarding Message format Next-hop discovery Scout protocol Mobility and route changes Protocol heritage ICM templ-1-o-example.ppt Page 2 Siemens, 2001
3 What is CASP? Generic signaling service establishes state along path of data one sender, typically one receiver can be multiple receivers multicast can be used for QoS per-flow or per-class reservation but not restricted to that avoid restricting users of protocol (and religious arguments): sender vs. receiver orientation more or less closely tied to data path router-by-router network (AS) path ICM templ-1-o-example.ppt Page 3 Siemens, 2001
4 CASP network model on-path CASP chain selective QoS QoS QoS midcom omnivorous CASP nodes form CASP chain not every node processes all client protocols: non-casp node: regular router omnivorous: processes all CASP messages selective: bypassed by CASP messages with unknown client protocols ICM templ-1-o-example.ppt Page 4 Siemens, 2001
5 CASP network model out-of-path Bandwidth broker NAC CASP AS 1249 AS15465 AS17 data Also route network-by-network can combine router-by-router with out-of-path messaging ICM templ-1-o-example.ppt Page 5 Siemens, 2001
6 CASP protocol structure client layer (C) messaging layer (M) transport layer (T) scout protocol messaging layer (M) UDP IP router alert client layer does the real work: reserve resources open firewall ports transport layer: reliable transport messaging layer: establishes and tears down state negotiates features and capabilities ICM templ-1-o-example.ppt Page 6 Siemens, 2001
7 CASP messages Regular CASP messages establish or tear down state carry client protocol Scout messages discover next hop Hop-by-hop reliability Generated by any node along the chain ICM templ-1-o-example.ppt Page 7 Siemens, 2001
8 CASP transport protocol usage Most signaling messages are small and infrequent but: not all applications e.g., mobile code for active networks digital signatures re-"dialing" when resources are busy Need: reliability to avoid long setup delays flow control avoid overloading signaling server congestion control avoid overloading network fragmentation of long signaling messages in-sequence delivery avoid race conditions transport-layer security integrity, privacy This defines standard reliable transport protocols: TCP SCTP Avoid re-inventing wheel see SIP experience ICM templ-1-o-example.ppt Page 8 Siemens, 2001
9 CASP transport protocol usage One transport connection many M- & C-layer sessions may use multiple TCP/SCTP ports can use TLS for transport-layer security compared to IPsec, well-exercised key establishment not quite clear what the principal is re-use of transport no overhead of TCP and SCTP session establishment avoid TLS session setup better timer estimates SCTP avoids HOL blocking ICM templ-1-o-example.ppt Page 9 Siemens, 2001
10 Message forwarding Route stateless or state-full: stateless: record route and retrace state-full: based on next-hop information in CASP node Destination: address look at destination address address + record record route route based on recorded route state forward based on next-hop state state backward based on previous-hop state State: no-op leave state as is ADD add message (and maybe client) state DEL delete message state ICM templ-1-o-example.ppt Page 10 Siemens, 2001
11 Message format common header extensions client protocol data No M-layer distinction between requests and responses just routed in different directions client protocol may define requests and responses Common header defines: destination flag state flag session identifier traffic selector: identify traffic "covered" by this session message sequence number response sequence number message cookie avoid IP address impersonation origin address may not be data source or sink destination address or scope ICM templ-1-o-example.ppt Page 11 Siemens, 2001
12 Message format, cont'd Limit session lifetime Avoid loops hop counter Mobility: dead branch removal flag branch identifier Record route: gathers up addresses of CASP nodes visited Route: addresses that CASP message should visit ICM templ-1-o-example.ppt Page 12 Siemens, 2001
13 Capability negotiation CASP has named capabilities including client protocols Three mechanisms: discovery: count capabilities along a path "10 out of 15 can do QoS" record: record capabilities for each node require: for scout message, only stop once node supports all capabilities (or-of-and) avoid protocol versioning ICM templ-1-o-example.ppt Page 13 Siemens, 2001
14 Next-hop discovery Next-in-path service enhanced routing protocols distribute information about node capabilities in OSPF routing protocol with probing service discovery, e.g., SLP first hop, e.g., router advertisements DHCP scout protocol Next AS service touch down once per autonomous system (AS) new DNS name space: ASN.as.arpa, e.g., 17.as.arpa use new DNS NAPTR and SRV for lookup similar to SIP approach ICM templ-1-o-example.ppt Page 14 Siemens, 2001
15 Next-hop discovery next IP hop CASP aware? Y existing transport connection? Y done N N use scout to find next CASP hop establish transport connection scout messages are special CASP messages limited < MTU size addressed to session destination UDP with router alert option get looked at by each router reflected when matching CASP node found ICM templ-1-o-example.ppt Page 15 Siemens, 2001
16 Mobility and route changes DEL (B=2) B=1 discovers new route on refresh ADD B=2 avoids session identification by end point addresses avoid use of traffic selector as session identifier remove dead branch ICM templ-1-o-example.ppt Page 16 Siemens, 2001
17 The weight of CASP CASP state = transport state + CASP M-state + client state M-state = two sockets transport state = O(100) bytes 10,000 users consume 1 MB ICM templ-1-o-example.ppt Page 17 Siemens, 2001
18 Conclusion CASP = unified infrastructure for data-affiliated sessions avoid making assumptions except that sessions wants to "visit" data nodes or networks not just mobility, but also mobility protocol framework in place but need to work out packet formats ICM templ-1-o-example.ppt Page 18 Siemens, 2001
19 CASP properties Network friendly congestion-controlled re-use of state across applications transport neutral any reliable protocol initially, TCP and SCTP policy neutral no particular AAA policy or protocol interaction with COPS, DIAMETER needs work soft state per-node time-out explicit removal extensible data format negotiation ICM templ-1-o-example.ppt Page 19 Siemens, 2001
20 CASP properties, cont'd. Topology hiding not recommended, but possible Light weight implementation complexity security associations (re-use) may not need kernel implementation ICM templ-1-o-example.ppt Page 20 Siemens, 2001
Different Layers Lecture 20
Different Layers Lecture 20 10/15/2003 Jian Ren 1 The Network Layer 10/15/2003 Jian Ren 2 Network Layer Functions Transport packet from sending to receiving hosts Network layer protocols in every host,
More informationTCP/IP Networking. Training Details. About Training. About Training. What You'll Learn. Training Time : 9 Hours. Capacity : 12
TCP/IP Networking Training Details Training Time : 9 Hours Capacity : 12 Prerequisites : There are no prerequisites for this course. About Training About Training TCP/IP is the globally accepted group
More informationIPv6 is Internet protocol version 6. Following are its distinctive features as compared to IPv4. Header format simplification Expanded routing and
INTERNET PROTOCOL VERSION 6 (IPv6) Introduction IPv6 is Internet protocol version 6. Following are its distinctive features as compared to IPv4. Header format simplification Expanded routing and addressing
More informationAn Industry view of IPv6 Advantages
An Industry view of IPv6 Advantages March 2002 Yanick.Pouffary@Compaq.Com Imagine what IPv6 can do for you! 1 Where we are Today IPv4 a victim of its own success IPv4 addresses consumed at an alarming
More informationIPv6: An Introduction
Outline IPv6: An Introduction Dheeraj Sanghi Department of Computer Science and Engineering Indian Institute of Technology Kanpur dheeraj@iitk.ac.in http://www.cse.iitk.ac.in/users/dheeraj Problems with
More informationIP - The Internet Protocol. Based on the slides of Dr. Jorg Liebeherr, University of Virginia
IP - The Internet Protocol Based on the slides of Dr. Jorg Liebeherr, University of Virginia Orientation IP (Internet Protocol) is a Network Layer Protocol. IP: The waist of the hourglass IP is the waist
More informationNetworking: Network layer
control Networking: Network layer Comp Sci 3600 Security Outline control 1 2 control 3 4 5 Network layer control Outline control 1 2 control 3 4 5 Network layer purpose: control Role of the network layer
More information3. (a) What is bridge? Explain the operation of a LAN bridge from to (b) Explain the operation of transparent bridge.
Code No: RR320503 Set No. 1 III B.Tech II Semester Supplimentary Examinations, Aug/Sep 2007 COMPUTER NETWORKS ( Common to Computer Science & Engineering, Information Technology, Electronics & Control Engineering,
More informationPosition of IP and other network-layer protocols in TCP/IP protocol suite
Position of IP and other network-layer protocols in TCP/IP protocol suite IPv4 is an unreliable datagram protocol a best-effort delivery service. The term best-effort means that IPv4 packets can be corrupted,
More informationRouter Architecture Overview
Chapter 4: r Introduction (forwarding and routing) r Review of queueing theory r Router design and operation r IP: Internet Protocol m IPv4 (datagram format, addressing, ICMP, NAT) m Ipv6 r Generalized
More informationDa 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 informationIPv6 Neighbor Discovery
The IPv6 neighbor discovery process uses Internet Control Message Protocol (ICMP) messages and solicited-node multicast addresses to determine the link-layer address of a neighbor on the same network (local
More informationCPSC 826 Internetworking. The Network Layer: Routing & Addressing Outline. The Network Layer
1 CPSC 826 Intering The Network Layer: Routing & Addressing Outline The Network Layer Michele Weigle Department of Computer Science Clemson University mweigle@cs.clemson.edu November 10, 2004 Network layer
More informationIPv6 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 informationNetworking interview questions
Networking interview questions What is LAN? LAN is a computer network that spans a relatively small area. Most LANs are confined to a single building or group of buildings. However, one LAN can be connected
More informationPlanning for Information Network
Planning for Information Network Lecture 7: Introduction to IPv6 Assistant Teacher Samraa Adnan Al-Asadi 1 IPv6 Features The ability to scale networks for future demands requires a limitless supply of
More informationCASP Cross-Application Signaling Protocol
Georg-August-Universität Göttingen Institut für Informatik ISSN 1611 1044 Nummer IFI TB 2003 001 Technischer Bericht CASP Cross-Application Signaling Protocol Henning Schulzrinne, Hannes Tschofenig, Xiaoming
More informationChapter 09 Network Protocols
Chapter 09 Network Protocols Copyright 2011, Dr. Dharma P. Agrawal and Dr. Qing-An Zeng. All rights reserved. 1 Outline Protocol: Set of defined rules to allow communication between entities Open Systems
More informationContents. Tunneling commands 1
Contents Tunneling commands 1 bandwidth 1 default 1 description 2 destination 3 4 interface tunnel 7 mtu 8 reset counters interface tunnel 9 service 9 shutdown 10 source 11 tunnel dfbit enable 12 tunnel
More informationNetwork Layer Part A (IPv6) Network Layer 4-1
Network Layer Part A (IPv6) Network Layer 4-1 Chapter 4: outline 4.1 Overview of Network layer data plane control plane 4.2 What s inside a router 4.3 IP: Internet Protocol datagram format fragmentation
More informationRSVP and the Integrated Services Architecture for the Internet
RSVP and the Integrated Services Architecture for the Internet N. C. State University CSC557 Multimedia Computing and Networking Fall 2001 Lecture # 20 Roadmap for Multimedia Networking 2 1. Introduction
More informationConfiguration Guide. for. Sipera IPCS 210/310/410/510 Version: 3.6. with. Nortel Communication Server 1000 Release 5.5
Configuration Guide for Sipera IPCS 210/310/410/510 Version: 3.6 with Nortel Communication Server 1000 Release 5.5 Issue 1.0 November 2008 Sipera Systems 1900 Firman Drive Suite 600 Richardson, TX 75081
More informationIPv6 Neighbor Discovery
IPv6 Neighbor Discovery Last Updated: September 19, 2012 The IPv6 neighbor discovery process uses Internet Control Message Protocol (ICMP) messages and solicited-node multicast addresses to determine the
More informationNetwork Layer (1) Networked Systems 3 Lecture 8
Network Layer (1) Networked Systems 3 Lecture 8 Role of the Network Layer Application Application The network layer is the first end-to-end layer in the OSI reference model Presentation Session Transport
More informationCOMP211 Chapter 4 Network Layer: The Data Plane
COMP211 Chapter 4 Network Layer: The Data Plane All material copyright 1996-2016 J.F Kurose and K.W. Ross, All Rights Reserved Computer Networking: A Top Down Approach 7 th edition Jim Kurose, Keith Ross
More informationHistory Page. Barracuda NextGen Firewall F
The Firewall > History page is very useful for troubleshooting. It provides information for all traffic that has passed through the Barracuda NG Firewall. It also provides messages that state why traffic
More informationRESTCOMMONE. jdiameter. Copyright All Rights Reserved Page 2
RESTCOMMONE jdiameter Copyright All Rights Reserved Page 2 RestcommONE Core Components RestcommOne Connect Visual Designer Web Browser WebRTC SDK s Mobile WebRTC SDK s RESTful API Layer RestcommOne Telecom
More informationChapter 12 Network Protocols
Chapter 12 Network Protocols 1 Outline Protocol: Set of defined rules to allow communication between entities Open Systems Interconnection (OSI) Transmission Control Protocol/Internetworking Protocol (TCP/IP)
More informationIPv6 Neighbor Discovery
The IPv6 neighbor discovery process uses Internet Control Message Protocol (ICMP) messages and solicited-node multicast addresses to determine the link-layer address of a neighbor on the same network (local
More informationDate: June 4 th a t 1 4:00 1 7:00
Kommunika tionssyste m FK, Examina tion G 5 0 7 Date: June 4 th 0 0 3 a t 4:00 7:00 KTH/IMIT/LCN No help material is allowed. You may answer questions in English or Swedish. Please answer each question
More informationResource Control and Reservation
1 Resource Control and Reservation Resource Control and Reservation policing: hold sources to committed resources scheduling: isolate flows, guarantees resource reservation: establish flows 2 Usage parameter
More informationRSVP 1. Resource Control and Reservation
RSVP 1 Resource Control and Reservation RSVP 2 Resource Control and Reservation policing: hold sources to committed resources scheduling: isolate flows, guarantees resource reservation: establish flows
More informationInternet Control Message Protocol
Internet Control Message Protocol The Internet Control Message Protocol is used by routers and hosts to exchange control information, and to inquire about the state and configuration of routers and hosts.
More informationChapter 2 Network Models 2.1
Chapter 2 Network Models 2.1 Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 2-1 LAYERED TASKS We use the concept of layers in our daily life. As an example,
More informationStudent ID: CS457: Computer Networking Date: 3/20/2007 Name:
CS457: Computer Networking Date: 3/20/2007 Name: Instructions: 1. Be sure that you have 9 questions 2. Be sure your answers are legible. 3. Write your Student ID at the top of every page 4. This is a closed
More informationReliability and Availability in Stream Control Transport Protocol (SCTP)
Reliability and Availability in Stream Control Transport Protocol (SCTP) Research Seminar on Real Time and High Availability Autumn 2001 by Laila Daniel on 21 st Nov. 2001 Stream Control Transmission Protocol
More informationCryptography and Network Security. Sixth Edition by William Stallings
Cryptography and Network Security Sixth Edition by William Stallings Chapter 20 IP Security If a secret piece of news is divulged by a spy before the time is ripe, he must be put to death, together with
More informationTSIN02 - Internetworking
Literature: Lecture 10: AAA RFC3286 RFC2881 RFC2905 RFC2903 Lecture 10: AAA Goals: 2004 Image Coding Group, Linköpings Universitet 2 Lecture 10: AAA AAA Introduction Outline: AAA introduction AAA in Network
More informationIPv6. 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 informationNT1210 Introduction to Networking. Unit 10
NT1210 Introduction to Networking Unit 10 Chapter 10, TCP/IP Transport Objectives Identify the major needs and stakeholders for computer networks and network applications. Compare and contrast the OSI
More informationTroubleshooting VoIP in Converged Networks
Troubleshooting VoIP in Converged Networks Terry Slattery Principal Consultant CCIE #1026 1 Objective Provide examples of common problems Troubleshooting tips What to monitor Remediation Tips you can use
More informationForeword xxiii Preface xxvii IPv6 Rationale and Features
Contents Foreword Preface xxiii xxvii 1 IPv6 Rationale and Features 1 1.1 Internet Growth 1 1.1.1 IPv4 Addressing 1 1.1.2 IPv4 Address Space Utilization 3 1.1.3 Network Address Translation 5 1.1.4 HTTP
More informationRouting. Info 341 Networking and Distributed Applications. Addresses, fragmentation, reassembly. end-to-end communication UDP, TCP
outing Info 341 Networking and Distributed Applications Context Layer 3 Addresses, fragmentation, reassembly Layer 4 end-to-end communication UDP, TCP outing At layer 3 Often relies on layer 4 Application
More informationCategory: Standards Track June Mobile IPv6 Support for Dual Stack Hosts and Routers
Network Working Group H. Soliman, Ed. Request for Comments: 5555 Elevate Technologies Category: Standards Track June 2009 Status of This Memo Mobile IPv6 Support for Dual Stack Hosts and Routers This document
More informationTopics for This Week
Topics for This Week Routing Protocols in the Internet OSPF, BGP More on IP Fragmentation and Reassembly ICMP Readings Sections 5.6.4-5.6.5 1 Hierarchical Routing aggregate routers into regions, autonomous
More informationETSF05/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 informationLecture 16: Network Layer Overview, Internet Protocol
Lecture 16: Network Layer Overview, Internet Protocol COMP 332, Spring 2018 Victoria Manfredi Acknowledgements: materials adapted from Computer Networking: A Top Down Approach 7 th edition: 1996-2016,
More informationFundamental Questions to Answer About Computer Networking, Jan 2009 Prof. Ying-Dar Lin,
Fundamental Questions to Answer About Computer Networking, Jan 2009 Prof. Ying-Dar Lin, ydlin@cs.nctu.edu.tw Chapter 1: Introduction 1. How does Internet scale to billions of hosts? (Describe what structure
More informationAdvanced Computer Networking. CYBR 230 Jeff Shafer University of the Pacific. IPv6
CYBR 230 Jeff Shafer University of the Pacific IPv6 2 IP Versions Version Description 0-3 Unused: Development versions of IP 4 Current network-layer protocol 5 Unused: Experimental stream protocol ST 6
More informationTransport Over IP. CSCI 690 Michael Hutt New York Institute of Technology
Transport Over IP CSCI 690 Michael Hutt New York Institute of Technology Transport Over IP What is a transport protocol? Choosing to use a transport protocol Ports and Addresses Datagrams UDP What is a
More informationInformation Network Systems The network layer. Stephan Sigg
Information Network Systems The network layer Stephan Sigg Tokyo, November 1, 2012 Error-detection and correction Decoding of Reed-Muller codes Assume a second order (16, 11) code for m = 4. The r-th order
More informationinternet technologies and standards
Institute of Telecommunications Warsaw University of Technology 2017 internet technologies and standards Piotr Gajowniczek Andrzej Bąk Michał Jarociński Network Layer The majority of slides presented in
More informationIntroduction to IPv6. IPv6 addresses
Introduction to IPv6 (Chapter 4 in Huitema) IPv6,Mobility-1 IPv6 addresses 128 bits long Written as eight 16-bit integers separated with colons E.g. 1080:0000:0000:0000:0000:0008:200C:417A = 1080::8:800:200C:417A
More informationDiameter Overload Control Application (DOCA) draft-korhonen-dime-ovl-00 Jouni Korhonen DIME WG IETF #85
Diameter Overload Control Application (DOCA) draft-korhonen-dime-ovl-00 Jouni Korhonen DIME WG IETF #85 What Diameter Overload Control Application is about? A simple/minimal (size wise) application for
More informationTutorial 2 : Networking
Lund University ETSN01 Advanced Telecommunication Tutorial 2 : Networking Author: Emma Fitzgerald Tutor: Farnaz Moradi November 26, 2015 Contents I Before you start 3 II Whole Class Exercise: Networking
More informationNetworking Technologies and Applications
Networking Technologies and Applications Rolland Vida BME TMIT Transport Protocols UDP User Datagram Protocol TCP Transport Control Protocol and many others UDP One of the core transport protocols Used
More informationQUESTION BANK EVEN SEMESTER
Fatima Michael College of Engineering and Technology DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING QUESTION BANK EVEN SEMESTER SUB CODE & NAME: EC2352 COMPUTER NETWORKS YEAR / SEM: III / VI Staff
More informationTransport Layer Marcos Vieira
Transport Layer 2014 Marcos Vieira Transport Layer Transport protocols sit on top of network layer and provide Application-level multiplexing ( ports ) Error detection, reliability, etc. UDP User Datagram
More informationCS 421: COMPUTER NETWORKS SPRING FINAL May 24, minutes. Name: Student No: TOT
CS 421: COMPUTER NETWORKS SPRING 2012 FINAL May 24, 2012 150 minutes Name: Student No: Show all your work very clearly. Partial credits will only be given if you carefully state your answer with a reasonable
More informationReview for Chapter 4 R1,R2,R3,R7,R10,R11,R16,R17,R19,R22,R24, R26,R30 P1,P2,P4,P7,P10,P11,P12,P14,P15,P16,P17,P22,P24,P29,P30
Review for Chapter 4 R1,R2,R3,R7,R10,R11,R16,R17,R19,R22,R24, R26,R30 P1,P2,P4,P7,P10,P11,P12,P14,P15,P16,P17,P22,P24,P29,P30 R1. Let s review some of the terminology used in this textbook. Recall that
More informationIntroduction to VoIP. Cisco Networking Academy Program Cisco Systems, Inc. All rights reserved. Cisco Public. IP Telephony
Introduction to VoIP Cisco Networking Academy Program 1 Requirements of Voice in an IP Internetwork 2 IP Internetwork IP is connectionless. IP provides multiple paths from source to destination. 3 Packet
More informationCS UDP: User Datagram Protocol, Other Transports, Sockets. congestion worse);
CS314-26 UDP: User Datagram Protocol, Other Transports, Sockets! IP is an unreliable datagram protocol " congestion or transmission errors cause lost packets " multiple routes may lead to out-of-order
More informationIPv6 Next generation IP
Seminar Presentation IPv6 Next generation IP N Ranjith Kumar 11/5/2004 IPv6 : Next generation IP 1 Network Problems Communication Problem Identification Problem Identification of Networks Logical Addressing
More informationWhat is the difference between unicast and multicast? (P# 114)
1 FINAL TERM FALL2011 (eagle_eye) CS610 current final term subjective all solved data by eagle_eye MY paper of CS610 COPUTER NETWORKS There were 30 MCQs Question no. 31 (Marks2) Find the class in 00000001.001011.1001.111
More informationn Understand EC-Council s scanning methodology n Describe scan types and the objectives of scanning
Outline n Understand EC-Council s scanning methodology n Describe scan types and the objectives of scanning n Understand the use of various scanning and enumeration tools Chapter #3: n Describe TCP communication
More informationCCNA 1 Chapter 7 v5.0 Exam Answers 2013
CCNA 1 Chapter 7 v5.0 Exam Answers 2013 1 A PC is downloading a large file from a server. The TCP window is 1000 bytes. The server is sending the file using 100-byte segments. How many segments will the
More informationPaper solution Subject: Computer Networks (TE Computer pattern) Marks : 30 Date: 5/2/2015
Paper solution Subject: Computer Networks (TE Computer- 2012 pattern) Marks : 30 Date: 5/2/2015 Q1 a) What is difference between persistent and non persistent HTTP? Also Explain HTTP message format. [6]
More informationIPng (IPv6) Motivation. Currently: mainly servers, workstations, SLIP/PPP Address space exhaustion + new uses:
1 IPng (IPv6) Motivation Currently: mainly servers, workstations, SLIP/PPP Address space exhaustion + new uses: permanently attached home computers (CATV) game consoles mobile terminals (PDAs) embedded
More informationChapter 5. Security Components and Considerations.
Chapter 5. Security Components and Considerations. Technology Brief Virtualization and Cloud Security Virtualization concept is taking major portion in current Data Center environments in order to reduce
More informationChapter 5 OSI Network Layer
Chapter 5 OSI Network Layer The protocols of the OSI model Network layer specify addressing and processes that enable Transport layer data to be packaged and transported. The Network layer encapsulation
More informationRouting with a distance vector protocol - EIGRP
Routing with a distance vector protocol - EIGRP Introducing Routing and Switching in the Enterprise Chapter 5.2 Copyleft 2012 Vincenzo Bruno (www.vincenzobruno.it) Released under Crative Commons License
More informationSJTU 2018 Fall Computer Networking. Wireless Communication
SJTU 2018 Fall Computer Networking 1 Wireless Communication Internet Protocol Stack 2 Application: supporting network applications - FTP, SMTP, HTTP Transport: data transfer between processes - TCP, UDP
More informationInstitute of Computer Technology - Vienna University of Technology. L73 - IP QoS Integrated Services Model. Integrated Services Model
Integrated Services Model IP QoS IntServ Integrated Services Model Resource Reservation Protocol (RSVP) Agenda Integrated Services Principles Resource Reservation Protocol RSVP Message Formats RSVP in
More informationRAJIV GANDHI COLLEGE OF ENGINEERING AND TECHNOLOGY
RAJIV GANDHI COLLEGE OF ENGINEERING AND TECHNOLOGY DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING QUESTION BANK SUBJECT NAME: COMPUTER NETWORKS SUBJECT CODE: CST52 UNIT-I 2 MARKS 1. What is Network? 2.
More informationHorizon Network Configuration Guidelines
Horizon Network Configuration Guidelines Contents 2.0 Configuration of Non ssured ccess routers... 2 2.1 ccess Control... 2,4,5 2.2 UDP Fragmentation during Horizon communications.... 3 2.3 SIP LG... 4
More informationVideo Streaming with the Stream Control Transmission Protocol (SCTP)
Chair for Network Architectures and Services Department of Informatics Technische Universität München Video Streaming with the Stream Control Transmission Protocol (SCTP) Lothar Braun, Andreas Müller Internet
More informationLecture 4 - Network Layer. Transport Layer. Outline. Introduction. Notes. Notes. Notes. Notes. Networks and Security. Jacob Aae Mikkelsen
Lecture 4 - Network Layer Networks and Security Jacob Aae Mikkelsen IMADA September 23, 2013 September 23, 2013 1 / 67 Transport Layer Goals understand principles behind network layer services: network
More informationHow to Configure an IKEv1 IPsec VPN to an AWS VPN Gateway with BGP
How to Configure an IKEv1 IPsec VPN to an AWS VPN Gateway with BGP If you are using the Amazon Virtual Private Cloud, you can transparently extend your local network to the cloud by connecting both networks
More informationColumbia University G. Camarillo Ericsson October 2005
Network Working Group Request for Comments: 4168 Category: Standards Track J. Rosenberg Cisco Systems H. Schulzrinne Columbia University G. Camarillo Ericsson October 2005 The Stream Control Transmission
More informationA Comparison Of MPLS Traffic Engineering Initiatives. Robert Pulley & Peter Christensen
A Comparison Of MPLS Traffic Engineering Initiatives Robert Pulley & Peter Christensen Need for MPLS Problems in today's network QoS and CoS requirements Need for Resource Reservation Why not RSVP MPLS
More informationTopics in Computer Networking Switch SS7 PSTN/ISDN. Gatekeeper/ Proxy Server. Topics in Computer Networking Н.
Outline SCTP Stream Control Transmission Protocol NGN and Motivation for SCTP Protocol Overview Packet format Protection against SYN Flooding Multistreaming Multihoming Research Activities at Kau Summary
More informationDesign Intentions. IP QoS IntServ. Agenda. Design Intentions. L73 - IP QoS Integrated Services Model. L73 - IP QoS Integrated Services Model
Design Intentions Integrated Services Model IP QoS IntServ Integrated Services Model Resource Reservation Protocol (RSVP) The Internet was based on a best effort packet delivery service, but nowadays the
More informationOSI Network Layer. Network Fundamentals Chapter 5. Version Cisco Systems, Inc. All rights reserved. Cisco Public 1
OSI Network Layer Network Fundamentals Chapter 5 Version 4.0 1 Objectives Identify the role of the Network Layer, as it describes communication from one end device to another end device. Examine the most
More informationSD-WAN Deployment Guide (CVD)
SD-WAN Deployment Guide (CVD) All Cisco Meraki security appliances are equipped with SD-WAN capabilities that enable administrators to maximize network resiliency and bandwidth efficiency. This guide introduces
More informationNAT, IPv6, & UDP CS640, Announcements Assignment #3 released
NAT, IPv6, & UDP CS640, 2015-03-03 Announcements Assignment #3 released Overview Network Address Translation (NAT) IPv6 Transport layer User Datagram Protocol (UDP) Network Address Translation (NAT) Hacky
More informationCode No: RR Set No. 1
Code No: RR410402 Set No. 1 1. (a) Write any four reasons for using layered protocols. (b) List two ways in which the OSI reference model and the TCP/IP reference model are the same and list in which they
More informationChapter 2 Advanced TCP/IP
Tactical Perimeter Defense 2-1 Chapter 2 Advanced TCP/IP At a Glance Instructor s Manual Table of Contents Overview Objectives Teaching Tips Quick Quizzes Class Discussion Topics Additional Projects Additional
More informationHY 335 Φροντιστήριο 8 ο
HY 335 Φροντιστήριο 8 ο Χειμερινό Εξάμηνο 2009-2010 Παπακωνσταντίνου Άρτεμις artpap@csd.uoc.gr 4/12/2009 Roadmap IP: The Internet Protocol IPv4 Addressing Datagram Format Transporting a datagram from source
More informationIP Security IK2218/EP2120
IP Security IK2218/EP2120 Markus Hidell, mahidell@kth.se KTH School of ICT Based partly on material by Vitaly Shmatikov, Univ. of Texas Acknowledgements The presentation builds upon material from - Previous
More informationMobile Communications Chapter 9: Network Protocols/Mobile IP
Mobile Communications Chapter 9: Network Protocols/Mobile IP Motivation Data transfer Encapsulation Security IPv6 Problems DHCP Ad-hoc s Routing protocols 9.0.1 Motivation for Mobile IP Routing based on
More informationRadware ADC. IPV6 RFCs and Compliance
Radware ADC IPV6 s and Compliance Knowledgebase Team February 2016 Scope: This document lists most of the s that relevant to IPv6. Legend: Yes supported N/A not applicable No Currently not supported Relevance:
More informationComputer Networks SYLLABUS CHAPTER - 2 : NETWORK LAYER CHAPTER - 3 : INTERNETWORKING
i SYLLABUS UNIT - 1 CHAPTER - 1 : INTRODUCTION Uses of Computer Networks, Network Hardware, Network Software, Reference Models (ISO-OSI, TCP/IP). CHAPTER - 2 : NETWORK LAYER Network Layer Design Issues,
More informationCSCE 715: Network Systems Security
CSCE 715: Network Systems Security Chin-Tser Huang huangct@cse.sc.edu University of South Carolina Security in Network Layer Implementing security in application layer provides flexibility in security
More informationDesign Considerations : Computer Networking. Outline
Design Considerations 15-744: Computer Networking L-2 Design Considerations How to determine split of functionality Across protocol layers Across network nodes Assigned Reading [SRC84] End-to-end Arguments
More informationConfiguring RIP. Information About RIP CHAPTER
CHAPTER 23 This chapter describes how to configure the ASASM to route data, perform authentication, and redistribute routing information using the Routing Information Protocol (RIP). This chapter includes
More informationTCP/IP Protocol Suite 1
TCP/IP Protocol Suite 1 Stream Control Transmission Protocol (SCTP) TCP/IP Protocol Suite 2 OBJECTIVES: To introduce SCTP as a new transport-layer protocol. To discuss SCTP services and compare them with
More informationFlexible Dynamic Mesh VPN draft-detienne-dmvpn-00
Flexible Dynamic Mesh VPN draft-detienne-dmvpn-00 Fred Detienne, Cisco Systems Manish Kumar, Cisco Systems Mike Sullenberger, Cisco Systems What is Dynamic Mesh VPN? DMVPN is a solution for building VPNs
More informationNetworking for Data Acquisition Systems. Fabrice Le Goff - 14/02/ ISOTDAQ
Networking for Data Acquisition Systems Fabrice Le Goff - 14/02/2018 - ISOTDAQ Outline Generalities The OSI Model Ethernet and Local Area Networks IP and Routing TCP, UDP and Transport Efficiency Networking
More informationPart II. Raj Jain. Washington University in St. Louis
Part II Raj Jain Washington University in Saint Louis Saint Louis, MO 63130 Jain@cse.wustl.edu Audio/Video recordings of this lecture are available at: http://www.cse.wustl.edu/~jain/cse571-07/ 19-1 Overview
More informationRequest for Comments: Wichorus G. Tsirtsis Qualcomm T. Ernst INRIA K. Nagami INTEC NetCore October 2009
Network Working Group Request for Comments: 5648 Category: Standards Track R. Wakikawa, Ed. Toyota ITC V. Devarapalli Wichorus G. Tsirtsis Qualcomm T. Ernst INRIA K. Nagami INTEC NetCore October 2009 Multiple
More information