Joint ITU-T/IEEE Workshop on Carrier-class Ethernet

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "Joint ITU-T/IEEE Workshop on Carrier-class Ethernet"

Transcription

1 Joint ITU-T/IEEE Workshop on Carrier-class Ethernet Quality of Service for unbounded data streams Reactive Congestion Management (proposals considered in IEE802.1Qau) Hugh Barrass (Cisco) 1

2 IEEE 802.1Qau Congestion Management TG Background Significant growth in data center networking demand New applications, growth in usage Also driven by server virtualization Interest in all areas of datacenter networking Including Ethernet, Fibre Channel, Infiniband etc. Customers asking for I/O consolidation Ethernet performance needs to match rivals Not just raw b/w goodput requires QOS approach Ethernet s biggest weakness is loss due to congestion 2

3 Area of Task Group study Bounded scope encourages effective solution Focus on datacenter networks Limited network diameter (b/w * delay product) Single administrative domain Assume moderate to very large scale datacenter 1000 s of nodes, all within small locale highly meshed Layer 2 edge to edge No backward inter-operability (only compatibility) Systems with new functions benefit Legacy systems in same network unchanged 3

4 CM cloud Compliant devices in cloud, edge behavior Bigger cloud = better performance Compliant bridges Non-compliant bridges Compliant end-stations Non-compliant end-stations Edge behavior 4

5 Reactive Congestion Management Why reactive? What target application? Prescriptive mechanisms (i.e. traffic management) not scaleable, require significant expertise Needs predictable data flows Not conducive to ad-hoc (plug and play) networks Block data transfers (apparently random) e.g. ftp, tftp, rdma, iscsi, etc. Logically meshed topology (any source to any destination) Life of flow >> network latency Otherwise reaction ineffective Buffering requirement proportional to delay b/w product 5

6 Control theoretical approach Use feedback from congestion points Control loop operates between congestion point (in network) and reaction point (at edge) As many control loops as entry points Either queue length or data rate is control target i.e. keep queue at fixed length during congestion or keep net data rate at CP egress speed Traffic entry rate is dependent variable Rate limiter structures reduce offered load from edge devices Algorithm & stability analysis using control theory 6

7 Sample system (for description) 1 congestion point, 1 reaction point defined Network cloud: many to many connectivity Edge data source Congestion point Edge data destination control packets Other destinations Other data sources assumed equivalent Limiter control state machine 7

8 Reaction Point Located at edge where flows enter the network New queue, with rate limiter mechanism Multi-path (run around) may be needed State preserved, based on notifications received Granularity dependant on implementation Could be SA/DA/PRI, DA/PRI, PRI-only, or entire link Suggest multiple rate limiters, with fall-back React to multiple congestion points If # congestion points exceeds # rate limiters fall-back to coarser granularity More than 2 or 3 simultaneous congestion points unlikely 8

9 Reaction Point Logical architecture similar for all proposals Bypass for non-match Input queue Output More rate limiters rate limiter Flow identification DA/SA/PRI, DA/PRI or PRI Limiter control state machine control packets 9

10 Forward probing FECN proposal Rate based Source at edge sends probes at fixed intervals Reflected at destination All potential congestion points amend control packets Returns worst b/w constriction in path Source reduces rate if b/w oversubscribed Constant overhead regardless of congestion Faster reaction (before queue starts growing) No unfairness, solves parking lot problem Some scalability concerns 10

11 Backward notification ECM proposal Queue length based As queue grows beyond threshold, CP generates BCN Contains queue length & delta for 2 nd order control BCNs generated randomly, sent to source address of sampled packet Sample interval key for reactivity & fairness Low overhead, no tagging required unless congestion May cause micro-unfairness Best throughput in nearly-congested case Hybrid approaches also considered 11

12 Preliminary results Simulations based on artificial hotspots Heavily loaded network node, suddenly reduce egress bandwidth Mimics burst of higher priority traffic Throughput massively better than no CM With reasonably sized network switches Some packet loss if no LL-FC (PAUSE) Much less than no CM, still not acceptable for datacenter Near perfect throughput with LL-FC Throughput matches b/w of congested link No impact on innocent flows Mechanism scales to largest data center tops out when delay.bandwidth > buffering 12

13 Still under consideration (i) Per priority PAUSE Simulations show benefits of link level flow control Modeled with IEEE 802.3x (PAUSE) only single priority level Real deployments would need priority aware PAUSE Non CM traffic and control traffic not effected by PAUSE Further study required before new project proposal Prove that PAUSE required demonstrable benefits Prevent or mitigate congestion spreading and/or deadlock 13

14 Still under consideration (ii) Priority scheduling Update to IEEE 802.1Q priority queuing Currently only strict priorities explicitly defined Virtual Lanes model Separated traffic classes aid I/O consolidation WRR (or similar) queuing to divide the b/w Common management definition for draining MIB model allows interoperability Testable definitions for queuing algorithms May fit with Residential Ethernet project requirements 14

15 Q and A 15

16 16

Enhanced Transmission Selection

Enhanced Transmission Selection Enhanced Transmission Selection Background Priorities/classes are being used to separate traffic with different QOS characteristics It is desirable to enable sharing network bandwidth between classes For

More information

Intel Ethernet Switch Converged Enhanced Ethernet (CEE) and Datacenter Bridging (DCB) Using Intel Ethernet Switch Family Switches

Intel Ethernet Switch Converged Enhanced Ethernet (CEE) and Datacenter Bridging (DCB) Using Intel Ethernet Switch Family Switches Intel Ethernet Switch Converged Enhanced Ethernet (CEE) and Datacenter Bridging (DCB) Using Intel Ethernet Switch Family Switches February, 2009 Legal INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION

More information

Unified Fabric: Cisco's Innovation for Data Center Networks

Unified Fabric: Cisco's Innovation for Data Center Networks . White Paper Unified Fabric: Cisco's Innovation for Data Center Networks What You Will Learn Unified Fabric supports new concepts such as IEEE Data Center Bridging enhancements that improve the robustness

More information

A Dell Technical White Paper Dell PowerConnect Team

A Dell Technical White Paper Dell PowerConnect Team Flow Control and Network Performance A Dell Technical White Paper Dell PowerConnect Team THIS WHITE PAPER IS FOR INFORMATIONAL PURPOSES ONLY, AND MAY CONTAIN TYPOGRAPHICAL ERRORS AND TECHNICAL INACCURACIES.

More information

Performance Evaluation of the RDMA over Ethernet (RoCE) Standard in Enterprise Data Centers Infrastructure. Abstract:

Performance Evaluation of the RDMA over Ethernet (RoCE) Standard in Enterprise Data Centers Infrastructure. Abstract: Performance Evaluation of the RDMA over Ethernet (RoCE) Standard in Enterprise Data Centers Infrastructure Motti Beck Director, Marketing motti@mellanox.com Michael Kagan Chief Technology Officer michaelk@mellanox.com

More information

Ethernet Fabric Requirements for FCoE in the Data Center

Ethernet Fabric Requirements for FCoE in the Data Center Ethernet Fabric Requirements for FCoE in the Data Center Gary Lee Director of Product Marketing glee@fulcrummicro.com February 2010 1 FCoE Market Overview FC networks are relatively high cost solutions

More information

Next Generation Data Centre ICT Infrastructures. Harry Forbes CTO NCS

Next Generation Data Centre ICT Infrastructures. Harry Forbes CTO NCS Next Generation Data Centre ICT Infrastructures Harry Forbes CTO NCS White Paper Nexans Cabling Solutions July 2010 Next Generation Data Centre ICT Infrastructures Harry Forbes CTO NCS Executive Summary

More information

Lecture 15: Congestion Control. CSE 123: Computer Networks Stefan Savage

Lecture 15: Congestion Control. CSE 123: Computer Networks Stefan Savage Lecture 15: Congestion Control CSE 123: Computer Networks Stefan Savage Overview Yesterday: TCP & UDP overview Connection setup Flow control: resource exhaustion at end node Today: Congestion control Resource

More information

LTE BACKHAUL REQUIREMENTS: A REALITY CHECK

LTE BACKHAUL REQUIREMENTS: A REALITY CHECK By: Peter Croy, Sr. Network Architect, Aviat Networks INTRODUCTION LTE mobile broadband technology is now being launched across the world with more than 140 service providers committed to implement it

More information

Load Balancing Mechanisms in Data Center Networks

Load Balancing Mechanisms in Data Center Networks Load Balancing Mechanisms in Data Center Networks Santosh Mahapatra Xin Yuan Department of Computer Science, Florida State University, Tallahassee, FL 33 {mahapatr,xyuan}@cs.fsu.edu Abstract We consider

More information

NetApp Ethernet Storage Evaluation

NetApp Ethernet Storage Evaluation Performance evaluation sponsored by NetApp, Inc. Introduction Ethernet storage is advancing towards a converged storage network, supporting the traditional NFS, CIFS and iscsi storage protocols and adding

More information

SDN and Data Center Networks

SDN and Data Center Networks SDN and Data Center Networks 10/9/2013 1 The Rise of SDN The Current Internet and Ethernet Network Technology is based on Autonomous Principle to form a Robust and Fault Tolerant Global Network (Distributed)

More information

SDN CENTRALIZED NETWORK COMMAND AND CONTROL

SDN CENTRALIZED NETWORK COMMAND AND CONTROL SDN CENTRALIZED NETWORK COMMAND AND CONTROL Software Defined Networking (SDN) is a hot topic in the data center and cloud community. The geniuses over at IDC predict a $2 billion market by 2016

More information

Technical Bulletin. Arista LANZ Overview. Overview

Technical Bulletin. Arista LANZ Overview. Overview Technical Bulletin Arista LANZ Overview Overview Highlights: LANZ provides unparalleled visibility into congestion hotspots LANZ time stamping provides for precision historical trending for congestion

More information

Smart Queue Scheduling for QoS Spring 2001 Final Report

Smart Queue Scheduling for QoS Spring 2001 Final Report ENSC 833-3: NETWORK PROTOCOLS AND PERFORMANCE CMPT 885-3: SPECIAL TOPICS: HIGH-PERFORMANCE NETWORKS Smart Queue Scheduling for QoS Spring 2001 Final Report By Haijing Fang(hfanga@sfu.ca) & Liu Tang(llt@sfu.ca)

More information

Data Center Infrastructure of the future. Alexei Agueev, Systems Engineer

Data Center Infrastructure of the future. Alexei Agueev, Systems Engineer Data Center Infrastructure of the future Alexei Agueev, Systems Engineer Traditional DC Architecture Limitations Legacy 3 Tier DC Model Layer 2 Layer 2 Domain Layer 2 Layer 2 Domain Oversubscription Ports

More information

Keywords: Dynamic Load Balancing, Process Migration, Load Indices, Threshold Level, Response Time, Process Age.

Keywords: Dynamic Load Balancing, Process Migration, Load Indices, Threshold Level, Response Time, Process Age. Volume 3, Issue 10, October 2013 ISSN: 2277 128X International Journal of Advanced Research in Computer Science and Software Engineering Research Paper Available online at: www.ijarcsse.com Load Measurement

More information

Data Center Convergence. Ahmad Zamer, Brocade

Data Center Convergence. Ahmad Zamer, Brocade Ahmad Zamer, Brocade SNIA Legal Notice The material contained in this tutorial is copyrighted by the SNIA unless otherwise noted. Member companies and individual members may use this material in presentations

More information

2. Research and Development on the Autonomic Operation. Control Infrastructure Technologies in the Cloud Computing Environment

2. Research and Development on the Autonomic Operation. Control Infrastructure Technologies in the Cloud Computing Environment R&D supporting future cloud computing infrastructure technologies Research and Development on Autonomic Operation Control Infrastructure Technologies in the Cloud Computing Environment DEMPO Hiroshi, KAMI

More information

CROSS LAYER BASED MULTIPATH ROUTING FOR LOAD BALANCING

CROSS LAYER BASED MULTIPATH ROUTING FOR LOAD BALANCING CHAPTER 6 CROSS LAYER BASED MULTIPATH ROUTING FOR LOAD BALANCING 6.1 INTRODUCTION The technical challenges in WMNs are load balancing, optimal routing, fairness, network auto-configuration and mobility

More information

Voice Over IP. MultiFlow 5048. IP Phone # 3071 Subnet # 10.100.24.0 Subnet Mask 255.255.255.0 IP address 10.100.24.171. Telephone.

Voice Over IP. MultiFlow 5048. IP Phone # 3071 Subnet # 10.100.24.0 Subnet Mask 255.255.255.0 IP address 10.100.24.171. Telephone. Anritsu Network Solutions Voice Over IP Application Note MultiFlow 5048 CALL Manager Serv # 10.100.27 255.255.2 IP address 10.100.27.4 OC-48 Link 255 255 25 IP add Introduction Voice communications over

More information

Intel Ethernet Switch Load Balancing System Design Using Advanced Features in Intel Ethernet Switch Family

Intel Ethernet Switch Load Balancing System Design Using Advanced Features in Intel Ethernet Switch Family Intel Ethernet Switch Load Balancing System Design Using Advanced Features in Intel Ethernet Switch Family White Paper June, 2008 Legal INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL

More information

Mellanox Technologies Inc. 2900 Stender Way, Santa Clara, CA 95054 Tel: 408-970-3400 Fax: 408-970-3403 http://www.mellanox.com

Mellanox Technologies Inc. 2900 Stender Way, Santa Clara, CA 95054 Tel: 408-970-3400 Fax: 408-970-3403 http://www.mellanox.com White Paper Deploying Quality of Service and Congestion Control in InfiniBand-based Data Center Networks Diego Crupnicoff, Sujal Das, Eitan Zahavi The InfiniBand architecture defined by IBTA includes novel

More information

Improving Quality of Service

Improving Quality of Service Improving Quality of Service Using Dell PowerConnect 6024/6024F Switches Quality of service (QoS) mechanisms classify and prioritize network traffic to improve throughput. This article explains the basic

More information

Scaling 10Gb/s Clustering at Wire-Speed

Scaling 10Gb/s Clustering at Wire-Speed Scaling 10Gb/s Clustering at Wire-Speed InfiniBand offers cost-effective wire-speed scaling with deterministic performance Mellanox Technologies Inc. 2900 Stender Way, Santa Clara, CA 95054 Tel: 408-970-3400

More information

Data Center Bridging. IEEE 802 Tutorial 12 th November 2007

Data Center Bridging. IEEE 802 Tutorial 12 th November 2007 Data Center Bridging IEEE 802 Tutorial 12 th November 2007 Contributors and Supporters Hugh Barrass Jan Bialkowski Bob Brunner Craig Carlson Mukund Chavan Rao Cherukuri Uri Cummings Norman Finn Anoop Ghanwani

More information

Configuring QoS. Understanding QoS CHAPTER

Configuring QoS. Understanding QoS CHAPTER 24 CHAPTER This chapter describes how to configure quality of service (QoS) by using standard QoS commands. With QoS, you can give preferential treatment to certain types of traffic at the expense of others.

More information

Switching Architectures for Cloud Network Designs

Switching Architectures for Cloud Network Designs Overview Networks today require predictable performance and are much more aware of application flows than traditional networks with static addressing of devices. Enterprise networks in the past were designed

More information

Block based, file-based, combination. Component based, solution based

Block based, file-based, combination. Component based, solution based The Wide Spread Role of 10-Gigabit Ethernet in Storage This paper provides an overview of SAN and NAS storage solutions, highlights the ubiquitous role of 10 Gigabit Ethernet in these solutions, and illustrates

More information

How Router Technology Shapes Inter-Cloud Computing Service Architecture for The Future Internet

How Router Technology Shapes Inter-Cloud Computing Service Architecture for The Future Internet How Router Technology Shapes Inter-Cloud Computing Service Architecture for The Future Internet Professor Jiann-Liang Chen Friday, September 23, 2011 Wireless Networks and Evolutional Communications Laboratory

More information

IEEE Congestion Management Presentation for IEEE Congestion Management Study Group

IEEE Congestion Management Presentation for IEEE Congestion Management Study Group IEEE Congestion Management Presentation for IEEE Congestion Management Study Group Contributors Jeff Lynch IBM Gopal Hegde -- Intel 2 Outline Problem Statement Types of Traffic & Typical Usage Models Traffic

More information

Virtual PortChannels: Building Networks without Spanning Tree Protocol

Virtual PortChannels: Building Networks without Spanning Tree Protocol . White Paper Virtual PortChannels: Building Networks without Spanning Tree Protocol What You Will Learn This document provides an in-depth look at Cisco's virtual PortChannel (vpc) technology, as developed

More information

Choosing Tap or SPAN for Data Center Monitoring

Choosing Tap or SPAN for Data Center Monitoring Choosing Tap or SPAN for Data Center Monitoring Technical Brief Key Points Taps are passive, silent, and deliver a perfect record of link traffic, but require additional hardware and create a point of

More information

QoS Switching. Two Related Areas to Cover (1) Switched IP Forwarding (2) 802.1Q (Virtual LANs) and 802.1p (GARP/Priorities)

QoS Switching. Two Related Areas to Cover (1) Switched IP Forwarding (2) 802.1Q (Virtual LANs) and 802.1p (GARP/Priorities) QoS Switching H. T. Kung Division of Engineering and Applied Sciences Harvard University November 4, 1998 1of40 Two Related Areas to Cover (1) Switched IP Forwarding (2) 802.1Q (Virtual LANs) and 802.1p

More information

Converging Data Center Applications onto a Single 10Gb/s Ethernet Network

Converging Data Center Applications onto a Single 10Gb/s Ethernet Network Converging Data Center Applications onto a Single 10Gb/s Ethernet Network Explanation of Ethernet Alliance Demonstration at SC10 Contributing Companies: Amphenol, Broadcom, Brocade, CommScope, Cisco, Dell,

More information

CHAPTER 6. VOICE COMMUNICATION OVER HYBRID MANETs

CHAPTER 6. VOICE COMMUNICATION OVER HYBRID MANETs CHAPTER 6 VOICE COMMUNICATION OVER HYBRID MANETs Multimedia real-time session services such as voice and videoconferencing with Quality of Service support is challenging task on Mobile Ad hoc Network (MANETs).

More information

Technology Overview. Class of Service Overview. Published: 2014-01-10. Copyright 2014, Juniper Networks, Inc.

Technology Overview. Class of Service Overview. Published: 2014-01-10. Copyright 2014, Juniper Networks, Inc. Technology Overview Class of Service Overview Published: 2014-01-10 Juniper Networks, Inc. 1194 North Mathilda Avenue Sunnyvale, California 94089 USA 408-745-2000 www.juniper.net Juniper Networks, Junos,

More information

ETHERNET WAN ENCRYPTION SOLUTIONS COMPARED

ETHERNET WAN ENCRYPTION SOLUTIONS COMPARED HERN WAN ENCRYPTION SOLUTIONS COMPARED KEY WORDS AND TERMS MACsec, WAN security, WAN data protection, MACsec encryption, network data protection, network data security, high-speed encryption, Senetas,

More information

Architecting Low Latency Cloud Networks

Architecting Low Latency Cloud Networks Architecting Low Latency Cloud Networks Introduction: Application Response Time is Critical in Cloud Environments As data centers transition to next generation virtualized & elastic cloud architectures,

More information

Fibre Channel over Ethernet in the Data Center: An Introduction

Fibre Channel over Ethernet in the Data Center: An Introduction Fibre Channel over Ethernet in the Data Center: An Introduction Introduction Fibre Channel over Ethernet (FCoE) is a newly proposed standard that is being developed by INCITS T11. The FCoE protocol specification

More information

QoS Queuing on Cisco Nexus 1000V Class-Based Weighted Fair Queuing for Virtualized Data Centers and Cloud Environments

QoS Queuing on Cisco Nexus 1000V Class-Based Weighted Fair Queuing for Virtualized Data Centers and Cloud Environments QoS Queuing on Cisco Nexus 1000V Class-Based Weighted Fair Queuing for Virtualized Data Centers and Cloud Environments Intended Audience Virtualization architects, network engineers or any administrator

More information

Data Center Quantized Congestion Notification (QCN): Implementation and Evaluation on NetFPGA. 2010 June 14th

Data Center Quantized Congestion Notification (QCN): Implementation and Evaluation on NetFPGA. 2010 June 14th Data Center Quantized Congestion Notification (QCN): Implementation and Evaluation on NetFPGA 2010 June 14th Masato Yasuda (NEC Corporation) Abdul Kader Kabanni (Stanford University) Background In data

More information

Solving I/O Bottlenecks to Enable Superior Cloud Efficiency

Solving I/O Bottlenecks to Enable Superior Cloud Efficiency WHITE PAPER Solving I/O Bottlenecks to Enable Superior Cloud Efficiency Overview...1 Mellanox I/O Virtualization Features and Benefits...2 Summary...6 Overview We already have 8 or even 16 cores on one

More information

Quality of Service (QoS) on Netgear switches

Quality of Service (QoS) on Netgear switches Quality of Service (QoS) on Netgear switches Section 1 Principles and Practice of QoS on IP networks Introduction to QoS Why? In a typical modern IT environment, a wide variety of devices are connected

More information

Fibre Forward - Why Storage Infrastructures Should Be Built With Fibre Channel

Fibre Forward - Why Storage Infrastructures Should Be Built With Fibre Channel Fibre Forward - Why Storage Infrastructures Should Be Built With Fibre Channel Prepared by: George Crump, Lead Analyst Prepared: June 2014 Fibre Forward - Why Storage Infrastructures Should Be Built With

More information

Testing Network Virtualization For Data Center and Cloud VERYX TECHNOLOGIES

Testing Network Virtualization For Data Center and Cloud VERYX TECHNOLOGIES Testing Network Virtualization For Data Center and Cloud VERYX TECHNOLOGIES Table of Contents Introduction... 1 Network Virtualization Overview... 1 Network Virtualization Key Requirements to be validated...

More information

CHAPTER 2. QoS ROUTING AND ITS ROLE IN QOS PARADIGM

CHAPTER 2. QoS ROUTING AND ITS ROLE IN QOS PARADIGM CHAPTER 2 QoS ROUTING AND ITS ROLE IN QOS PARADIGM 22 QoS ROUTING AND ITS ROLE IN QOS PARADIGM 2.1 INTRODUCTION As the main emphasis of the present research work is on achieving QoS in routing, hence this

More information

Feature Comparison. Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V

Feature Comparison. Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V Comparison and Contents Introduction... 4 More Secure Multitenancy... 5 Flexible Infrastructure... 9 Scale, Performance, and Density... 13 High Availability... 18 Processor and Memory Support... 24 Network...

More information

Enterasys Data Center Fabric

Enterasys Data Center Fabric TECHNOLOGY STRATEGY BRIEF Enterasys Data Center Fabric There is nothing more important than our customers. Enterasys Data Center Fabric Executive Summary Demand for application availability has changed

More information

Investigation and Comparison of MPLS QoS Solution and Differentiated Services QoS Solutions

Investigation and Comparison of MPLS QoS Solution and Differentiated Services QoS Solutions Investigation and Comparison of MPLS QoS Solution and Differentiated Services QoS Solutions Steve Gennaoui, Jianhua Yin, Samuel Swinton, and * Vasil Hnatyshin Department of Computer Science Rowan University

More information

Networking Topology For Your System

Networking Topology For Your System This chapter describes the different networking topologies supported for this product, including the advantages and disadvantages of each. Select the one that best meets your needs and your network deployment.

More information

Distributed Explicit Partial Rerouting (DEPR) Scheme for Load Balancing in MPLS Networks

Distributed Explicit Partial Rerouting (DEPR) Scheme for Load Balancing in MPLS Networks Distributed Eplicit Partial Rerouting (DEPR) Scheme for Load Balancing in MPLS Networks Sherif Ibrahim Mohamed shf_ibrahim@yahoo.com Khaled M. F. Elsayed, senior member IEEE khaled@ieee.org Department

More information

1. The subnet must prevent additional packets from entering the congested region until those already present can be processed.

1. The subnet must prevent additional packets from entering the congested region until those already present can be processed. Congestion Control When one part of the subnet (e.g. one or more routers in an area) becomes overloaded, congestion results. Because routers are receiving packets faster than they can forward them, one

More information

Performance Evaluation of AODV, OLSR Routing Protocol in VOIP Over Ad Hoc

Performance Evaluation of AODV, OLSR Routing Protocol in VOIP Over Ad Hoc (International Journal of Computer Science & Management Studies) Vol. 17, Issue 01 Performance Evaluation of AODV, OLSR Routing Protocol in VOIP Over Ad Hoc Dr. Khalid Hamid Bilal Khartoum, Sudan dr.khalidbilal@hotmail.com

More information

Performance of Switching Networks

Performance of Switching Networks Performance of Switching Networks (A general view based on a simple model) J-P Dufey, CERN Outline: Overview and Definitions Non Blocking vs Blocking Switches Input vs Output Queueing Simulation Model

More information

Introduction to Infiniband. Hussein N. Harake, Performance U! Winter School

Introduction to Infiniband. Hussein N. Harake, Performance U! Winter School Introduction to Infiniband Hussein N. Harake, Performance U! Winter School Agenda Definition of Infiniband Features Hardware Facts Layers OFED Stack OpenSM Tools and Utilities Topologies Infiniband Roadmap

More information

Achieving Data Center Networking Efficiency Breaking the Old Rules & Dispelling the Myths

Achieving Data Center Networking Efficiency Breaking the Old Rules & Dispelling the Myths WHITE PAPER Achieving Data Center Networking Efficiency Breaking the Old Rules & Dispelling the Myths The New Alternative: Scale-Out Fabrics for Scale-Out Data Centers...2 Legacy Core Switch Evolution,

More information

Analysis of traffic engineering parameters while using multi-protocol label switching (MPLS) and traditional IP networks

Analysis of traffic engineering parameters while using multi-protocol label switching (MPLS) and traditional IP networks Analysis of traffic engineering parameters while using multi-protocol label switching (MPLS) and traditional IP networks Faiz Ahmed Electronic Engineering Institute of Communication Technologies, PTCL

More information

IP ETHERNET STORAGE CHALLENGES

IP ETHERNET STORAGE CHALLENGES ARISTA SOLUTION GUIDE IP ETHERNET STORAGE INSIDE Oveview IP Ethernet Storage Challenges Need for Massive East to West Scalability TCP Incast Storage and Compute Devices Interconnecting at Different Speeds

More information

SONICWALL SWITCHING NSA 2400MX IN SONICOS ENHANCED

SONICWALL SWITCHING NSA 2400MX IN SONICOS ENHANCED You can read the recommendations in the user, the technical or the installation for SONICWALL SWITCHING NSA 2400MX IN SONICOS ENHANCED 5.7. You'll find the answers to all your questions on the SONICWALL

More information

FIBRE CHANNEL OVER ETHERNET

FIBRE CHANNEL OVER ETHERNET FIBRE CHANNEL OVER ETHERNET A Review of FCoE Today ABSTRACT Fibre Channel over Ethernet (FcoE) is a storage networking option, based on industry standards. This white paper provides an overview of FCoE,

More information

High-Performance Automated Trading Network Architectures

High-Performance Automated Trading Network Architectures High-Performance Automated Trading Network Architectures Performance Without Loss Performance When It Counts Introduction Firms in the automated trading business recognize that having a low-latency infrastructure

More information

White. Paper. The Converged Network. November, 2009. By Bob Laliberte. 2009, Enterprise Strategy Group, Inc. All Rights Reserved

White. Paper. The Converged Network. November, 2009. By Bob Laliberte. 2009, Enterprise Strategy Group, Inc. All Rights Reserved White Paper The Converged Network By Bob Laliberte November, 2009 2009, Enterprise Strategy Group, Inc. All Rights Reserved White Paper: The Converged Network 2 Contents Introduction... 3 What s Needed...

More information

PART III. OPS-based wide area networks

PART III. OPS-based wide area networks PART III OPS-based wide area networks Chapter 7 Introduction to the OPS-based wide area network 7.1 State-of-the-art In this thesis, we consider the general switch architecture with full connectivity

More information

The Data Replication Bottleneck: Overcoming Out of Order and Lost Packets across the WAN

The Data Replication Bottleneck: Overcoming Out of Order and Lost Packets across the WAN The Data Replication Bottleneck: Overcoming Out of Order and Lost Packets across the WAN By Jim Metzler, Cofounder, Webtorials Editorial/Analyst Division Background and Goal Many papers have been written

More information

CHAPTER 8 CONCLUSION AND FUTURE ENHANCEMENTS

CHAPTER 8 CONCLUSION AND FUTURE ENHANCEMENTS 137 CHAPTER 8 CONCLUSION AND FUTURE ENHANCEMENTS 8.1 CONCLUSION In this thesis, efficient schemes have been designed and analyzed to control congestion and distribute the load in the routing process of

More information

Configuring Network QoS

Configuring Network QoS CHAPTER 8 This chapter describes how to configure a network qos policy for the Cisco NX-OS device in the Data Center Bridging (DCB) network. This chapter includes the following sections: Note This chapter

More information

ADVANCED NETWORK CONFIGURATION GUIDE

ADVANCED NETWORK CONFIGURATION GUIDE White Paper ADVANCED NETWORK CONFIGURATION GUIDE CONTENTS Introduction 1 Terminology 1 VLAN configuration 2 NIC Bonding configuration 3 Jumbo frame configuration 4 Other I/O high availability options 4

More information

Quality of Service (QoS)) in IP networks

Quality of Service (QoS)) in IP networks Quality of Service (QoS)) in IP networks Petr Grygárek rek 1 Quality of Service (QoS( QoS) QoS is the ability of network to support applications without limiting it s s function or performance ITU-T T

More information

APPLICATION-AWARE ROUTING IN SOFTWARE-DEFINED NETWORKS

APPLICATION-AWARE ROUTING IN SOFTWARE-DEFINED NETWORKS APPLICATION-AWARE ROUTING IN SOFTWARE-DEFINED NETWORKS SARO VELRAJAN Director of Technology, Aricent APPLICATION-AWARE ROUTING IN SOFTWARE-DEFINED NETWORKS Service providers are constantly exploring avenues

More information

VXLAN: Scaling Data Center Capacity. White Paper

VXLAN: Scaling Data Center Capacity. White Paper VXLAN: Scaling Data Center Capacity White Paper Virtual Extensible LAN (VXLAN) Overview This document provides an overview of how VXLAN works. It also provides criteria to help determine when and where

More information

SBSCET, Firozpur (Punjab), India

SBSCET, Firozpur (Punjab), India Volume 3, Issue 9, September 2013 ISSN: 2277 128X International Journal of Advanced Research in Computer Science and Software Engineering Research Paper Available online at: www.ijarcsse.com Layer Based

More information

Small is Better: Avoiding Latency Traps in Virtualized DataCenters

Small is Better: Avoiding Latency Traps in Virtualized DataCenters Small is Better: Avoiding Latency Traps in Virtualized DataCenters SOCC 2013 Yunjing Xu, Michael Bailey, Brian Noble, Farnam Jahanian University of Michigan 1 Outline Introduction Related Work Source of

More information

Fuzzy Active Queue Management for Assured Forwarding Traffic in Differentiated Services Network

Fuzzy Active Queue Management for Assured Forwarding Traffic in Differentiated Services Network Fuzzy Active Management for Assured Forwarding Traffic in Differentiated Services Network E.S. Ng, K.K. Phang, T.C. Ling, L.Y. Por Department of Computer Systems & Technology Faculty of Computer Science

More information

The changes in each specification and how they compare is shown in the table below. Following the table is a discussion of each of these changes.

The changes in each specification and how they compare is shown in the table below. Following the table is a discussion of each of these changes. Introduction There are many interconnect technologies connect components in a system and an embedded designer is faced with an array of standards and technologies choose from. This paper explores the latest

More information

Restorable Logical Topology using Cross-Layer Optimization

Restorable Logical Topology using Cross-Layer Optimization פרויקטים בתקשורת מחשבים - 236340 - סמסטר אביב 2016 Restorable Logical Topology using Cross-Layer Optimization Abstract: Today s communication networks consist of routers and optical switches in a logical

More information

Requirements of Voice in an IP Internetwork

Requirements of Voice in an IP Internetwork Requirements of Voice in an IP Internetwork Real-Time Voice in a Best-Effort IP Internetwork This topic lists problems associated with implementation of real-time voice traffic in a best-effort IP internetwork.

More information

Chapter 3. Enterprise Campus Network Design

Chapter 3. Enterprise Campus Network Design Chapter 3 Enterprise Campus Network Design 1 Overview The network foundation hosting these technologies for an emerging enterprise should be efficient, highly available, scalable, and manageable. This

More information

Three Key Design Considerations of IP Video Surveillance Systems

Three Key Design Considerations of IP Video Surveillance Systems Three Key Design Considerations of IP Video Surveillance Systems 2012 Moxa Inc. All rights reserved. Three Key Design Considerations of IP Video Surveillance Systems Copyright Notice 2012 Moxa Inc. All

More information

3G Converged-NICs A Platform for Server I/O to Converged Networks

3G Converged-NICs A Platform for Server I/O to Converged Networks White Paper 3G Converged-NICs A Platform for Server I/O to Converged Networks This document helps those responsible for connecting servers to networks achieve network convergence by providing an overview

More information

Transport Layer Protocols

Transport Layer Protocols Transport Layer Protocols Version. Transport layer performs two main tasks for the application layer by using the network layer. It provides end to end communication between two applications, and implements

More information

Measuring IP Performance. Geoff Huston Telstra

Measuring IP Performance. Geoff Huston Telstra Measuring IP Performance Geoff Huston Telstra What are you trying to measure? User experience Responsiveness Sustained Throughput Application performance quality Consistency Availability Network Behaviour

More information

Latency Analyzer (LANZ)

Latency Analyzer (LANZ) Latency Analyzer (LANZ) Technical Bulletin LANZ - A New Dimension in Network Visibility Arista Networks Latency Analyzer (LANZ) represents a revolution in integrated network performance monitoring. For

More information

Testing & Assuring Mobile End User Experience Before Production. Neotys

Testing & Assuring Mobile End User Experience Before Production. Neotys Testing & Assuring Mobile End User Experience Before Production Neotys Agenda Introduction The challenges Best practices NeoLoad mobile capabilities Mobile devices are used more and more At Home In 2014,

More information

Programming Assignments for Graduate Students using GENI

Programming Assignments for Graduate Students using GENI Programming Assignments for Graduate Students using GENI 1 Copyright c 2011 Purdue University Please direct comments regarding this document to fahmy@cs.purdue.edu. 1 OVERVIEW 2 1 Overview This document

More information

5 Performance Management for Web Services. Rolf Stadler School of Electrical Engineering KTH Royal Institute of Technology. stadler@ee.kth.

5 Performance Management for Web Services. Rolf Stadler School of Electrical Engineering KTH Royal Institute of Technology. stadler@ee.kth. 5 Performance Management for Web Services Rolf Stadler School of Electrical Engineering KTH Royal Institute of Technology stadler@ee.kth.se April 2008 Overview Service Management Performance Mgt QoS Mgt

More information

Fibre Channel over Ethernet: A necessary infrastructure convergence

Fibre Channel over Ethernet: A necessary infrastructure convergence Fibre Channel over : A necessary infrastructure convergence By Deni Connor, principal analyst April 2008 Introduction Consolidation of IT datacenter infrastructure is happening in all forms. IT administrators

More information

Optimizing Data Center Networks for Cloud Computing

Optimizing Data Center Networks for Cloud Computing PRAMAK 1 Optimizing Data Center Networks for Cloud Computing Data Center networks have evolved over time as the nature of computing changed. They evolved to handle the computing models based on main-frames,

More information

全 新 企 業 網 路 儲 存 應 用 THE STORAGE NETWORK MATTERS FOR EMC IP STORAGE PLATFORMS

全 新 企 業 網 路 儲 存 應 用 THE STORAGE NETWORK MATTERS FOR EMC IP STORAGE PLATFORMS 全 新 企 業 網 路 儲 存 應 用 THE STORAGE NETWORK MATTERS FOR EMC IP STORAGE PLATFORMS Enterprise External Storage Array Capacity Growth IDC s Storage Capacity Forecast = ~40% CAGR (2014/2017) Keep Driving Growth!

More information

Ethernet Fabrics: An Architecture for Cloud Networking

Ethernet Fabrics: An Architecture for Cloud Networking WHITE PAPER www.brocade.com Data Center Ethernet Fabrics: An Architecture for Cloud Networking As data centers evolve to a world where information and applications can move anywhere in the cloud, classic

More information

White Paper Abstract Disclaimer

White Paper Abstract Disclaimer White Paper Synopsis of the Data Streaming Logical Specification (Phase I) Based on: RapidIO Specification Part X: Data Streaming Logical Specification Rev. 1.2, 08/2004 Abstract The Data Streaming specification

More information

An Approach to Load Balancing In Cloud Computing

An Approach to Load Balancing In Cloud Computing An Approach to Load Balancing In Cloud Computing Radha Ramani Malladi Visiting Faculty, Martins Academy, Bangalore, India ABSTRACT: Cloud computing is a structured model that defines computing services,

More information

I/O Virtualization Using Mellanox InfiniBand And Channel I/O Virtualization (CIOV) Technology

I/O Virtualization Using Mellanox InfiniBand And Channel I/O Virtualization (CIOV) Technology I/O Virtualization Using Mellanox InfiniBand And Channel I/O Virtualization (CIOV) Technology Reduce I/O cost and power by 40 50% Reduce I/O real estate needs in blade servers through consolidation Maintain

More information

Computer Networking Networks

Computer Networking Networks Page 1 of 8 Computer Networking Networks 9.1 Local area network A local area network (LAN) is a network that connects computers and devices in a limited geographical area such as a home, school, office

More information

Sla Aware Load Balancing Algorithm Using Join-Idle Queue for Virtual Machines in Cloud Computing

Sla Aware Load Balancing Algorithm Using Join-Idle Queue for Virtual Machines in Cloud Computing Sla Aware Load Balancing Using Join-Idle Queue for Virtual Machines in Cloud Computing Mehak Choudhary M.Tech Student [CSE], Dept. of CSE, SKIET, Kurukshetra University, Haryana, India ABSTRACT: Cloud

More information

MMPTCP: A Novel Transport Protocol for Data Centre Networks

MMPTCP: A Novel Transport Protocol for Data Centre Networks MMPTCP: A Novel Transport Protocol for Data Centre Networks Morteza Kheirkhah FoSS, Department of Informatics, University of Sussex Modern Data Centre Networks FatTree It provides full bisection bandwidth

More information

Fiber Channel Over Ethernet (FCoE)

Fiber Channel Over Ethernet (FCoE) Fiber Channel Over Ethernet (FCoE) Using Intel Ethernet Switch Family White Paper November, 2008 Legal INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL PRODUCTS. NO LICENSE, EXPRESS OR

More information

Ethernet: THE Converged Network Ethernet Alliance Demonstration as SC 09

Ethernet: THE Converged Network Ethernet Alliance Demonstration as SC 09 Ethernet: THE Converged Network Ethernet Alliance Demonstration as SC 09 Authors: Amphenol, Cisco, Dell, Fulcrum Microsystems, Intel, Ixia, JDSU, Mellanox, NetApp, Panduit, QLogic, Spirent, Tyco Electronics,

More information

Virtual networking technologies at the server-network edge

Virtual networking technologies at the server-network edge Virtual networking technologies at the server-network edge Technology brief Introduction... 2 Virtual Ethernet Bridges... 2 Software-based VEBs Virtual Switches... 2 Hardware VEBs SR-IOV enabled NICs...

More information

Scalable High Resolution Network Monitoring

Scalable High Resolution Network Monitoring Scalable High Resolution Network Monitoring Open Cloud Day Wintherthur, 16 th of June, 2016 Georgios Kathareios, Ákos Máté, Mitch Gusat IBM Research GmbH Zürich Laboratory {ios, kos, mig}@zurich.ibm.com

More information