RESILIENT NETWORK DESIGN

Size: px
Start display at page:

Download "RESILIENT NETWORK DESIGN"

Transcription

1 Matěj Grégr RESILIENT NETWORK DESIGN 1/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

2 Campus Best Practices - Resilient network design Campus Best Practices documents share knowledge within several technical areas (physical infrastructure, campus networking, wireless, security, etc.) Campus Best Practice Documents are available at: Resilient network design is described mainly in: Recommended Resilient Campus Network Design, March 2010 (CBPD114, the Czech Republic) Recommended configuration of switches in campus networks, May 2010 (UFS105, Norway) 2/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

3 Resilient network design Enterprise campus requires highly available and secure network infrastructure, to support business solutions such as voice, video, wireless, and mission-critical data applications. Resiliency Ability to provide non-stop business communication with rapid sub-second network recovery during abnormal network failures or even network upgrades. The goal of resilient topology is to eliminate downtime and convergence time during crashes and device upgrades 3/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

4 Network design 1 Single broadcast domain Single security domain No backup Central switch performance 4/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

5 Network design 2 Routers can separate network Smaller broadcast domains Possibility to control traffic path Routers are pretty expensive Number of ports in an ordinary router is limited 5/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

6 Resilient Campus design Servers and users access ports Aggregation traffic from access layer High speed switching/routing 6/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

7 Access layer Entry point for clients into the network Provides Layer 2 (VLAN) connectivity between users High port density PoE Security mechanism 802.1x QoS classification 7/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

8 Access layer Problems: Access switches are single points of failure in a network Redundant connection for end users is very expensive Resiliency has to be integrated into the device Redundant supervisor, power outlet Recommendations: Disable Etherchannel and trunk negotiation for end users Prevents VLAN hopping attacks Enable edge ports (PortFast) for access ports 8/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

9 Server access layer redundancy Servers need redundant network connection Possible solutions: Link aggregation protocol (LACP, PAgP) Ethernet card bonding Server virtualization Service load balancing 9/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

10 Link aggregation (Etherchannel) Allows combination of several physical links to one logical channel Physical view Logical view Load balancing MAC, IP, IP+TCP/UDP Simplify configuration only logical port configuration is necessary Simplify other protocol operation STP sees only Etherchannel link 10/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

11 Link aggregation protocol Two signaling protocols exist (PAgP, LACP) LACP IEEE 802.3ad is recommended, PAgP is Cisco proprietary Modes: Active/Passive: request/response channel establishment On/Off: static configuration Recommendation: Use static configuration (mode on): dynamic configuration delays channel establishment 11/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

12 Etherchannel configuration Prerequisites to established channel Same speed/duplex Same mode (trunk same vlans enabled, access same access vlan) Same STP cost and mode (edge/non-edge) Cisco Switch1(config)# interface range gi 0/1-2 Switch1(config-if-range)# channel-group 1 mode active HP Switch1(config)# trunk g1-g2 trk1 lacp 12/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

13 Ethernet card bonding Useful, when server does not support aggregation protocol Linux - supported in kernel Windows supported in Ethernet card drivers Several modes: backup transmit load balancing: load balance in transmit direction adaptive load balancing: rewrite MAC addresses, different peers use different MAC address, no switch support is necessary 13/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

14 Server virtualization Virtualization brings simplification in network resilient design Virtual servers are connected through Virtual Switch Virtual switch redundant connection to resilient network All virtual servers have resilient connection to Internet 14/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

15 Server Load Balancing SLB provides a virtual server IP address to which clients can connect, representing a group of real physical servers in a server farm Load balancing: according to: L4 - L7 information Software implementation Hardware implementation Cisco Application Control Engine modul needed Advantages: Reduced server load Higher security real IP address is not visible Downtime elimination if more servers are used 15/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

16 SLB modes Dispatched mode Every server in server farm has own real IP together with virtual IP address (secondary IP or loopback IP) of whole server farm Traffic redirection: packet with virtual IP is put in Ethernet frame with MAC address of real server All servers in SLB farm have to be in same IP subnet Directed mode Every server has only own real IP address Servers do not know virtual IP address of whole server farm NAT is used virtual IP address of the farm is translated to real IP address of a server 16/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

17 Distribution layer Purpose is to provide L2 distribution through switched network Topology contains loops (needed for redundancy) L2 loop protocol (STP) is needed Gateway redundancy, high availability Packet filtering, 17/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

18 Spanning tree protocol Necessary for loop elimination 802.1D Original version has very long convergence time > 30s Did not support VLAN support added in 802.1t, extend BID, now integrated into 802.1D Recommendation is to use RSTP (802.1w), RPVSTP+ or MSTP (802.1s) 18/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

19 Rapid Spanning Tree (RSTP) IEEE 802.1w Convergence time < 1s Backward compatibility with 802.1D Several Cisco 802.1D improvements were integrated into 802.1w standard (UplinkFast, BackboneFast ) Configuration: Cisco: Switch(config)# spanning-tree mode rapid-pvst HP: Switch(config)# spanning-tree force-version rstp-operation 19/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

20 STP load balancing Scenario: Port-priority or port cost can be used Example: Left(config)# interface gi1/6 Left(config)# spanning-tree vlan 200 port priority 112 Recommendation: Useful is to set higher priority on undesired port instead of setting lower priority on desired port 20/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

21 MSTP STP or RSTP support only one STP tree for all VLANs RPVSTP+ (Cisco proprietary): STP tree per every VLAN Main idea of MSTP: Administrator can configure several STP instances VLANS are mapped to instances MSTP internally use RSTP 21/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

22 MSTP configuration Switch(config)# spanning-tree mode mst Switch(config)# spanning-tree mst configuration Switch(config-mst)# name region1 Switch(config-mst)# revision 1 Switch(config-mst)# instance 1 vlan 100 Switch(config-mst)# instance 2 vlan 200 Configuration needed for every switch Increase complexity Proprietary solution: Use VTPv3 22/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

23 VTPv3 More flexible protocol can distribute any database Better authentication VTP can be turned on/off per port Client can not rewrite database as it was common in previous versions Server/client/transparent switch for databases VLAN, MST, Unknown (another database in future) Primary/secondary server Primary server (only) can modify a database Only one server in a domain Secondary server: backup server, could be primary 23/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

24 VTPv3 MSTP configuration Configure VTPv3 Switch(config)# vtp version 3 Switch(config)# vtp domain NAME Switch(config)# vtp mode server mst Switch(config)# end Switch# vtp primary mst MSTP configuration similar to previous slide MSTP config is distributed within VTPv3 domain 24/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

25 Gateway redundancy Historic attempts Proxy ARP, ICMP Router Discovery Protocol, routing support in end station Does not scale well, software support is needed Solution: Redundancy using virtual router Virtual IP, virtual MAC No host configuration needed Proprietary solutions HSRP, GLBP Standard solution VRRP Virtual Router Internet, Backbone, etc. 25/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr, Forwarder Backup in Standby

26 VRRP Open standard IETF RFC 3768 version 2 IETF RFC 5798 version 3 (IPv4 + IPv6) VRRP Group virtual router with virtual IP address Virtual MAC address e00.01xx - last byte is group number Master router Highest priority IP address same as virtual IP (IP address owner) always win master role Backup router Other routers in VRRP group 26/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

27 VRRP configuration Cisco configuration SwitchA(config)# interface vlan10 SwitchA(config-if)# ip address ! Virtual IP for vrrp group 10 SwitchA(config-if)# vrrp 10 ip ! Priority for router in group 10 (standard priority is 100) SwitchA(config-if)# vrrp 10 priority 150! Preempt delay SwitchA(config-if)# vrrp 10 preempt delay minimum 380 HP configuration hp (config)# vlan 223 hp (vlan-224)# vrrp vrid 1 hp (vlan-224-vrid-1)# owner hp (vlan-224-vrid-1)# virtual-ip-address hp (vlan-224-vrid-1)# enable Recommendation Use the first IP address from subnet for Master router Set preempt-delay-time to let routing protocol converge 27/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

28 Gateway Load Balancing Protocol HSRP, VRRP may have inactive routers in a group Standby and Other routers: cannot be used by end station (do not have virtual IP/MAC) Possible solution: several HSRP/VRRP groups with end stations distributed among them Static configuration! GLBP goal is to utilize all routers equally Several members of GLBP group should participate in packets switching/routing GLBP solution Virtual IP per group max. 4 virtual MAC addresses per group 28/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

29 GLBP fundamental concept GLBP group contains two types of members Active Virtual Gateway Active Virtual Forwarder Active virtual gateway (AVG) Router with highest priority (highest IP address) There is only one AVG per group Assign virtual MAC addresses of other members of the GLBP group Reply to virtual IP ARP requests GLBP group controller: end device requesting virtual IP address obtains some of the assigned virtual MAC addresses Active virtual forwarder (AVF) Max. 4 AVF per group, other routers are in backups AVF are responsible for assigned virtual MAC/IP address AVG is also AVF Communication is done via Hello messages every 3 sec, multicast address UDP / Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

30 GLBP operation 30/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

31 GLBP load balancing techniques Weighted load-balancing algorithm Based on weighting parameter Per-host (Host-dependent load-balancing algorithm) End station has always the same AVF Round-robin load-balancing algorithm (default) Virtual MAC addresses are rotated per ARP request 31/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

32 Core layer High speed routing Fast convergence is necessary Aggregate links from distribution layer Try to avoid any packet manipulation, (access lists and filtering), which would slow down the switching of packets. Smaller campus can combine core and distribution layer functions 32/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

33 Is the core layer necessary? 33/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

34 Is the core layer necessary? 34/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

35 Summary Resilient network design eliminates downtime and convergence time in a network If is it properly deployed Always depends of How much money do You have 35/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

36 36/ Brno University of Technology, Faculty of Information Technology, Matěj Grégr,

CCNP SWITCH: Implementing High Availability and Redundancy in a Campus Network

CCNP SWITCH: Implementing High Availability and Redundancy in a Campus Network CCNP SWITCH: Implementing High Availability and Redundancy in a Campus Network Olga Torstensson SWITCHv6 1 Components of High Availability Redundancy Technology (including hardware and software features)

More information

Cisco Networking Academy CCNP Multilayer Switching

Cisco Networking Academy CCNP Multilayer Switching CCNP3 v5 - Chapter 5 Cisco Networking Academy CCNP Multilayer Switching Implementing High Availability in a Campus Environment Routing issues Hosts rely on a router to find the best path Issues with established

More information

CCNP Switch 642-813 Questions/Answers Implementing High Availability and Redundancy

CCNP Switch 642-813 Questions/Answers Implementing High Availability and Redundancy Which Catalyst 6500 switch component integrates on individual line modules as well as on the supervisor engine? A. CPU B. Flash C. ASIC D. NVRAM Answer: C Cisco Catalyst 6500 Series with Cisco IOS Software

More information

IMPLEMENTING CISCO SWITCHED NETWORKS V2.0 (SWITCH)

IMPLEMENTING CISCO SWITCHED NETWORKS V2.0 (SWITCH) IMPLEMENTING CISCO SWITCHED NETWORKS V2.0 (SWITCH) COURSE OVERVIEW: Implementing Cisco Switched Networks (SWITCH) v2.0 is a five-day instructor-led training course developed to help students prepare for

More information

CHAPTER 10 LAN REDUNDANCY. Scaling Networks

CHAPTER 10 LAN REDUNDANCY. Scaling Networks CHAPTER 10 LAN REDUNDANCY Scaling Networks CHAPTER 10 10.0 Introduction 10.1 Spanning Tree Concepts 10.2 Varieties of Spanning Tree Protocols 10.3 Spanning Tree Configuration 10.4 First-Hop Redundancy

More information

Switching in an Enterprise Network

Switching in an Enterprise Network Switching in an Enterprise Network Introducing Routing and Switching in the Enterprise Chapter 3 Version 4.0 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 1 Objectives Compare the types of

More information

- Redundancy and Load Balancing -

- Redundancy and Load Balancing - 1 - Redundancy and Load Balancing - Importance of Redundancy High availability is critical in most environments. Even a brief outage due to hardware failure may be considered unacceptable. Consider the

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

Interconnecting Cisco Networking Devices Part 2 (ICND2) Course 01 - Implementing Scalable Medium-Sized Networks

Interconnecting Cisco Networking Devices Part 2 (ICND2) Course 01 - Implementing Scalable Medium-Sized Networks Interconnecting Cisco Networking Devices Part 2 (ICND2) Course 01 - Implementing Scalable Medium-Sized Networks Slide 1 Lesson 1 Troubleshooting VLAN Connectivity Slide 2 VLAN Review A VLAN represents:

More information

hp ProLiant network adapter teaming

hp ProLiant network adapter teaming hp networking june 2003 hp ProLiant network adapter teaming technical white paper table of contents introduction 2 executive summary 2 overview of network addressing 2 layer 2 vs. layer 3 addressing 2

More information

Objectives. The Role of Redundancy in a Switched Network. Layer 2 Loops. Broadcast Storms. More problems with Layer 2 loops

Objectives. The Role of Redundancy in a Switched Network. Layer 2 Loops. Broadcast Storms. More problems with Layer 2 loops ITE I Chapter 6 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 1 Objectives Implement Spanning Tree Protocols LAN Switching and Wireless Chapter 5 Explain the role of redundancy in a converged

More information

ASM Educational Center (ASM) Est. 1992

ASM Educational Center (ASM) Est. 1992 Cisco CCNP Routing and Switching Certification Course outline ROUTE v2.0 - Implementing Cisco IP Routing Module 1: Basic Network and Routing Concepts Lesson 1: Differentiating Routing Protocols Lesson

More information

Course Contents CCNP (CISco certified network professional)

Course Contents CCNP (CISco certified network professional) Course Contents CCNP (CISco certified network professional) CCNP Route (642-902) EIGRP Chapter: EIGRP Overview and Neighbor Relationships EIGRP Neighborships Neighborship over WANs EIGRP Topology, Routes,

More information

Simulation of High Availability Internet Service Provider s Network

Simulation of High Availability Internet Service Provider s Network Abdullah Jameel Mahdi 1 and Anas Ali Hussain 2 1 Information and Communication department, Information Engineering Collage, Al-Nahrin University 2 Computer department, Engineering Collage, Al-Nahrin University

More information

Redundancy and load balancing at L3 in Local Area Networks. Fulvio Risso Politecnico di Torino

Redundancy and load balancing at L3 in Local Area Networks. Fulvio Risso Politecnico di Torino Redundancy and load balancing at L3 in Local Area Networks Fulvio Risso Politecnico di Torino 1 Default gateway redundancy (1) H1 DG: R1 H2 DG: R1 H3 DG: R1 R1 R2 ISP1 ISP2 Internet 3 Default gateway redundancy

More information

Redundancy and load balancing at L3 in Local Area Networks. Fulvio Risso Politecnico di Torino

Redundancy and load balancing at L3 in Local Area Networks. Fulvio Risso Politecnico di Torino Redundancy and load balancing at L3 in Local Area Networks Fulvio Risso Politecnico di Torino 1 Problem: the router is a single point of failure H1 H2 H3 VLAN4 H4 VLAN4 Corporate LAN Corporate LAN R1 R2

More information

GLBP - Gateway Load Balancing Protocol

GLBP - Gateway Load Balancing Protocol GLBP - Gateway Load Balancing Protocol Gateway Load Balancing Protocol (GLBP) protects data traffic from a failed router or circuit, like Hot Standby Router Protocol (HSRP) and Virtual Router Redundancy

More information

COURSE AGENDA. Lessons - CCNA. CCNA & CCNP - Online Course Agenda. Lesson 1: Internetworking. Lesson 2: Fundamentals of Networking

COURSE AGENDA. Lessons - CCNA. CCNA & CCNP - Online Course Agenda. Lesson 1: Internetworking. Lesson 2: Fundamentals of Networking COURSE AGENDA CCNA & CCNP - Online Course Agenda Lessons - CCNA Lesson 1: Internetworking Internetworking models OSI Model Discuss the OSI Reference Model and its layers Purpose and function of different

More information

Abstract. MEP; Reviewed: GAK 10/17/2005. Solution & Interoperability Test Lab Application Notes 2005 Avaya Inc. All Rights Reserved.

Abstract. MEP; Reviewed: GAK 10/17/2005. Solution & Interoperability Test Lab Application Notes 2005 Avaya Inc. All Rights Reserved. Configuring Single Instance Rapid Spanning Tree Protocol (RSTP) between an Avaya C360 Converged Switch and HP ProCurve Networking Switches to support Avaya IP Telephony Issue 1.0 Abstract These Application

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

Understanding and Configuring Spanning Tree Protocol (STP) on Catalyst Switches

Understanding and Configuring Spanning Tree Protocol (STP) on Catalyst Switches Understanding and Configuring Spanning Tree Protocol (STP) on Catalyst Switches Document ID: 5234 Contents Introduction Prerequisites Requirements Components Used Conventions Background Theory Network

More information

Upon completion of this chapter, you will be able to answer the following questions: n What are the commands to configure Rapid

Upon completion of this chapter, you will be able to answer the following questions: n What are the commands to configure Rapid CHAPTER 2 LAN Redundancy Objectives Upon completion of this chapter, you will be able to answer the following questions: n What are the issues that you should be concerned with when implementing a redundant

More information

- EtherChannel - Port Aggregation

- EtherChannel - Port Aggregation 1 Port Aggregation - EtherChannel - A network will often span across multiple switches. Trunk ports are usually used to connect switches together. There are two issues with using only a single physical

More information

Juniper Networks EX Series/ Cisco Catalyst Interoperability Test Results. May 1, 2009

Juniper Networks EX Series/ Cisco Catalyst Interoperability Test Results. May 1, 2009 Juniper Networks EX Series/ Cisco Catalyst Interoperability Test Results May 1, 2009 Executive Summary Juniper Networks commissioned Network Test to assess interoperability between its EX4200 and EX8208

More information

QUESTION 15 Which two values are used by Spanning Tree Protocol to elect a root bridge? (Choose two.)

QUESTION 15 Which two values are used by Spanning Tree Protocol to elect a root bridge? (Choose two.) Chapter 9: Switching QUESTION 15 Which two values are used by Spanning Tree Protocol to elect a root bridge? (Choose two.) A. amount of RAM B. bridge priority C. IOS version D. IP address E. MAC address

More information

Configuring EtherChannels

Configuring EtherChannels CHAPTER 12 This chapter describes how to configure EtherChannels on the Cisco 7600 series router Layer 2 or Layer 3 LAN ports. For complete syntax and usage information for the commands used in this chapter,

More information

Migration from Cisco GLBP to industry standard VRRPE

Migration from Cisco GLBP to industry standard VRRPE Migration from Cisco GLBP to industry standard VRRPE Technical white paper Table of contents Overview... 2 Gateway load balancing protocols... 2 Introduction to Cisco GLBP... 2 Introduction to VRRPE...

More information

Juniper / Cisco Interoperability Tests. August 2014

Juniper / Cisco Interoperability Tests. August 2014 Juniper / Cisco Interoperability Tests August 2014 Executive Summary Juniper Networks commissioned Network Test to assess interoperability, with an emphasis on data center connectivity, between Juniper

More information

Interconnecting Cisco Networking Devices Part 2

Interconnecting Cisco Networking Devices Part 2 Interconnecting Cisco Networking Devices Part 2 Course Number: ICND2 Length: 5 Day(s) Certification Exam This course will help you prepare for the following exam: 640 816: ICND2 Course Overview This course

More information

GLBP - Gateway Load Balancing Protocol

GLBP - Gateway Load Balancing Protocol GLBP - Gateway Load Balancing Protocol Gateway Load Balancing Protocol (GLBP) protects data traffic from a failed router or circuit, like Hot Standby Router Protocol (HSRP) and Virtual Router Redundancy

More information

Brocade to Cisco Comparisons

Brocade to Cisco Comparisons 1 2 3 Console cables - The console cables are not interchangeable between Brocade and Cisco. Each vendor provides their console cable with each manageable unit it sells. Passwords - Neither Cisco or Brocade

More information

ICANWK613A Develop plans to manage structured troubleshooting process of enterprise networks

ICANWK613A Develop plans to manage structured troubleshooting process of enterprise networks ICANWK613A Develop plans to manage structured troubleshooting process of enterprise networks Release: 1 ICANWK613A Develop plans to manage structured troubleshooting process of enterprise networks Modification

More information

Summary Report for Individual Task 113-SIG-3002 Implement Local Area Network (LAN) Redundancy Status: Approved

Summary Report for Individual Task 113-SIG-3002 Implement Local Area Network (LAN) Redundancy Status: Approved Report Date: 23 Mar 2015 Summary Report for Individual Task 113-SIG-3002 Implement Local Area Network (LAN) Redundancy Status: Approved Distribution Restriction: Approved for public release; distribution

More information

Troubleshooting and Maintaining Cisco IP Networks Volume 1

Troubleshooting and Maintaining Cisco IP Networks Volume 1 Troubleshooting and Maintaining Cisco IP Networks Volume 1 Course Introduction Learner Skills and Knowledge Course Goal and E Learning Goal and Course Flow Additional Cisco Glossary of Terms Your Training

More information

First Hop Redundancy (Layer 3) 1. Network Design First Hop. Agenda. First Hop Redundancy (Layer 3) 2. L102 - First Hop Redundancy

First Hop Redundancy (Layer 3) 1. Network Design First Hop. Agenda. First Hop Redundancy (Layer 3) 2. L102 - First Hop Redundancy First Hop Redundancy (Layer 3) 1 Network Design First Hop First Hop Redundancy, Server Redundancy The problem: How can local routers be recognized by IP hosts? Note: Normally IP host has limited view of

More information

Redundancy and load balancing at L3 in Local. Fulvio Risso Politecnico di Torino

Redundancy and load balancing at L3 in Local. Fulvio Risso Politecnico di Torino Redundancy and load balancing at L3 in Local Area Networks Fulvio Risso Politecnico di Torino 1 Copyright notice This set of transparencies, hereinafter referred to as slides, is protected by copyright

More information

Cisco Data Centre: Introducing Cisco Data Center Networking

Cisco Data Centre: Introducing Cisco Data Center Networking coursemonster.com/uk Cisco Data Centre: Introducing Cisco Data Center Networking View training dates» Overview In the Introducing Cisco Data Center Networking training course, delegates will learn to:â

More information

Lab 7-1 Configuring Switches for IP Telephony Support

Lab 7-1 Configuring Switches for IP Telephony Support Lab 7-1 Configuring Switches for IP Telephony Support Learning Objectives Configure auto QoS to support IP phones Configure CoS override for data frames Configure the distribution layer to trust access

More information

Top-Down Network Design

Top-Down Network Design Top-Down Network Design Chapter Five Designing a Network Topology Copyright 2010 Cisco Press & Priscilla Oppenheimer Topology A map of an internetwork that indicates network segments, interconnection points,

More information

Chapter 7 Lab 7-1, Configuring Switches for IP Telephony Support

Chapter 7 Lab 7-1, Configuring Switches for IP Telephony Support Chapter 7 Lab 7-1, Configuring Switches for IP Telephony Support Topology Objectives Background Configure auto QoS to support IP phones. Configure CoS override for data frames. Configure the distribution

More information

Fast Fault Recovery in Switched Networks for Carrying IP Telephony Traffic

Fast Fault Recovery in Switched Networks for Carrying IP Telephony Traffic Technical report, IDE1002, February 2010 Fast Fault Recovery in Switched Networks for Carrying IP Telephony Traffic Master s Thesis in Computer Network Engineering ALI AKBAR EISAZADEH & NORA ESPAHBODI

More information

Cisco Certified Network Associate ( )

Cisco Certified Network Associate ( ) Cisco Certified Network Associate (200-125) Exam Description: The Cisco Certified Network Associate (CCNA) Routing and Switching composite exam (200-125) is a 90-minute, 50 60 question assessment that

More information

A New Approach to Developing High-Availability Server

A New Approach to Developing High-Availability Server A New Approach to Developing High-Availability Server James T. Yu, Ph.D. School of Computer Science, Telecommunications, and Information Systems DePaul University jyu@cs.depaul.edu ABSTRACT This paper

More information

Configuring EtherChannels

Configuring EtherChannels 25 CHAPTER This chapter describes how to configure EtherChannel interfaces. For complete syntax and usage information for the commands used in this chapter, refer to the Catalyst 2950 Desktop Switch Command

More information

Chapter 2 Lab 2-2, Configuring EtherChannel Instructor Version

Chapter 2 Lab 2-2, Configuring EtherChannel Instructor Version Chapter 2 Lab 2-2, Configuring EtherChannel Instructor Version Topology Objective Background Configure EtherChannel. Four switches have just been installed. The distribution layer switches are Catalyst

More information

Reliability and Load Handling Problem in Internet Service Provider s Network

Reliability and Load Handling Problem in Internet Service Provider s Network Technical Report, December 2008 Reliability and Load Handling Problem in Internet Service Provider s Network Master s Thesis in Computer Network Engineering Imran Pervaiz Mirza Kashif Abrar (800206-T052)

More information

How To Understand and Configure Your Network for IntraVUE

How To Understand and Configure Your Network for IntraVUE How To Understand and Configure Your Network for IntraVUE Summary This document attempts to standardize the methods used to configure Intrauve in situations where there is little or no understanding of

More information

SSVP SIP School VoIP Professional Certification

SSVP SIP School VoIP Professional Certification SSVP SIP School VoIP Professional Certification Exam Objectives The SSVP exam is designed to test your skills and knowledge on the basics of Networking and Voice over IP. Everything that you need to cover

More information

640-816: Interconnecting Cisco Networking Devices Part 2 v1.1

640-816: Interconnecting Cisco Networking Devices Part 2 v1.1 640-816: Interconnecting Cisco Networking Devices Part 2 v1.1 Course Introduction Course Introduction Chapter 01 - Small Network Implementation Introducing the Review Lab Cisco IOS User Interface Functions

More information

GLBP Gateway Load Balancing Protocol

GLBP Gateway Load Balancing Protocol GLBP Gateway Load Balancing Protocol By MEDDANE Redouane Cisco Instructor 1 How GLBP Works. GLBP works by making use of a single virtual IP address, which is configured as the default gateway on the hosts.

More information

Layer 3 Redundancy with HSRP By Sunset Learning Instructor Andrew Stibbards

Layer 3 Redundancy with HSRP By Sunset Learning Instructor Andrew Stibbards Layer 3 Redundancy with HSRP By Sunset Learning Instructor Andrew Stibbards Hot Standby Router Protocol (HSRP) is a Cisco proprietary protocol which allows several routers or multilayer switches to appear

More information

Cisco Discovery 3: Introducing Routing and Switching in the Enterprise 157.8 hours teaching time

Cisco Discovery 3: Introducing Routing and Switching in the Enterprise 157.8 hours teaching time Essential Curriculum Computer Networking II Cisco Discovery 3: Introducing Routing and Switching in the Enterprise 157.8 hours teaching time Chapter 1 Networking in the Enterprise-------------------------------------------------

More information

Objectives. Explain the Role of Redundancy in a Converged Switched Network. Explain the Role of Redundancy in a Converged Switched Network

Objectives. Explain the Role of Redundancy in a Converged Switched Network. Explain the Role of Redundancy in a Converged Switched Network Implement Spanning Tree Protocols LAN Switching and Wireless Chapter 5 Objectives Explain the role of redundancy in a converged network Summarize how STP works to eliminate Layer 2 loops in a converged

More information

NETE-4635 Computer Network Analysis and Design. Designing a Network Topology. NETE4635 - Computer Network Analysis and Design Slide 1

NETE-4635 Computer Network Analysis and Design. Designing a Network Topology. NETE4635 - Computer Network Analysis and Design Slide 1 NETE-4635 Computer Network Analysis and Design Designing a Network Topology NETE4635 - Computer Network Analysis and Design Slide 1 Network Topology Design Themes Hierarchy Redundancy Modularity Well-defined

More information

Configure IOS Catalyst Switches to Connect Cisco IP Phones Configuration Example

Configure IOS Catalyst Switches to Connect Cisco IP Phones Configuration Example Configure IOS Catalyst Switches to Connect Cisco IP Phones Configuration Example Document ID: 69632 Introduction Prerequisites Requirements Components Used Conventions Background Information Configure

More information

Digi Certified Transport Technician Training Course (DCTT)

Digi Certified Transport Technician Training Course (DCTT) 1 2 A roadblock to this might be if dynamic routing using proprietary protocols, like EIGRP, are required. 3 (VRRP Can also be used over FDDI/Token Ring) HSRP (Hot Standby Router Protocol) is the Cisco

More information

Data Networking and Architecture. Delegates should have some basic knowledge of Internet Protocol and Data Networking principles.

Data Networking and Architecture. Delegates should have some basic knowledge of Internet Protocol and Data Networking principles. Data Networking and Architecture The course focuses on theoretical principles and practical implementation of selected Data Networking protocols and standards. Physical network architecture is described

More information

The Network Level in Local Area Networks. Fulvio Risso Politecnico di Torino

The Network Level in Local Area Networks. Fulvio Risso Politecnico di Torino The Network Level in Local Area Networks Fulvio Risso Politecnico di Torino 1 LANs and Routers Routers are a fundamental part of a LAN We cannot imagine a network without access to the Internet and/or

More information

TechBrief Introduction

TechBrief Introduction TechBrief Introduction Leveraging Redundancy to Build Fault-Tolerant Networks The high demands of e-commerce and Internet applications have required networks to exhibit the same reliability as the public

More information

Cisco Certified Network Associate (CCNA) 120 Hours / 12 Months / Self-Paced WIA Fee: $2035.00

Cisco Certified Network Associate (CCNA) 120 Hours / 12 Months / Self-Paced WIA Fee: $2035.00 Cisco Certified Network Associate (CCNA) 120 Hours / 12 Months / Self-Paced WIA Fee: $2035.00 This fee includes the following exams: Cisco Certified Network Associate (CCNA) 100-101 ICND1 and 200-101 ICND2

More information

Local and Metropolitan Area Network Design (LMAND) Progettazione di Reti Locali e Comprensorio (PRLC) Exercises

Local and Metropolitan Area Network Design (LMAND) Progettazione di Reti Locali e Comprensorio (PRLC) Exercises Local and Metropolitan Area Network Design (LMAND) Progettazione di Reti Locali e Comprensorio (PRLC) Exercises Symbols Station Multi-layer Switch Server Router L2 switch EXERCISE #1 L2 Switch Fe0 Fe2

More information

Configuring HSRP. Understanding HSRP CHAPTER

Configuring HSRP. Understanding HSRP CHAPTER CHAPTER 39 This chapter describes how to use Hot Standby Router Protocol (HSRP) on the Cisco ME3400EEthernet Access switch to provide routing redundancy for routing IP traffic without being dependent on

More information

CHAPTER 6 DESIGNING A NETWORK TOPOLOGY

CHAPTER 6 DESIGNING A NETWORK TOPOLOGY CHAPTER 6 DESIGNING A NETWORK TOPOLOGY Expected Outcomes Able to identify terminology that will help student discuss technical goals with customer. Able to introduce a checklist that can be used to determine

More information

ANZA Formación en Tecnologías Avanzadas

ANZA Formación en Tecnologías Avanzadas INTRODUCING CISCO DATA CENTER NETWORKING (DCICN) Temario This new assoicate level course has been designed to introduce delegates to the three primary technologies that are used in the Cisco Data Center.

More information

"Charting the Course...

Charting the Course... Description "Charting the Course... Course Summary Interconnecting Cisco Networking Devices: Accelerated (CCNAX), is a course consisting of ICND1 and ICND2 content in its entirety, but with the content

More information

Configuring LACP (802.3ad) Between a Catalyst 6500/6000 and a Catalyst 4500/4000

Configuring LACP (802.3ad) Between a Catalyst 6500/6000 and a Catalyst 4500/4000 Configuring LACP (802.3ad) Between a Catalyst 6500/6000 and a Catalyst 4500/4000 Document ID: 19642 Contents Introduction Before You Begin Conventions Prerequisites Components Used Background Theory Difference

More information

Cisco Certified Network Professional - Routing & Switching

Cisco Certified Network Professional - Routing & Switching Cisco Certified Network Professional - Routing & Switching Information Course Price 5,265 No. Vouchers: Course Code 0 Vouchers CCNP-RS No. Courses: 3 1/9 Implementing Cisco IP Routing Information Length:

More information

Recommendations for a redundant campus network Best Practice Document

Recommendations for a redundant campus network Best Practice Document Recommendations for a redundant campus network Best Practice Document Produced by UNINETT led working group on campus networking (UFS114) Authors: Gunnar Bøe, Vidar Faltinsen, Einar Lillebrygfjeld December

More information

Description: Objective: Upon completing this course, the learner will be able to meet these overall objectives:

Description: Objective: Upon completing this course, the learner will be able to meet these overall objectives: Course: Building Cisco Service Provider Next-Generation Networks, Part 2 Duration: 5 Day Hands-On Lab & Lecture Course Price: $ 3,750.00 Learning Credits: 38 Description: The Building Cisco Service Provider

More information

M2M Series Routers. Virtual Router Redundancy Protocol (VRRP) Configuration Whitepaper

M2M Series Routers. Virtual Router Redundancy Protocol (VRRP) Configuration Whitepaper Virtual Router Redundancy Protocol (VRRP) Configuration Whitepaper Table of Contents What is VRRP?... 3 VRRP Terminology... 3 Virtual Router... 3 VRRP Instance... 3 Virtual Router ID... 3 Virtual Router

More information

ISOM3380 Advanced Network Management. Spring 2014 15. Course Description

ISOM3380 Advanced Network Management. Spring 2014 15. Course Description ISOM3380 Advanced Network Management Spring 2014 15 Course Description In an interconnected economy, management of network applications becomes increasingly important. This course helps students develop

More information

Interconnecting Cisco Networking Devices: Accelerated Course CCNAX v2.0; 5 Days, Instructor-led

Interconnecting Cisco Networking Devices: Accelerated Course CCNAX v2.0; 5 Days, Instructor-led Interconnecting Cisco Networking Devices: Accelerated Course CCNAX v2.0; 5 Days, Instructor-led Course Description Interconnecting Cisco Networking Devices: Accelerated (CCNAX) v2.0 is a 60-hour instructor-led

More information

Port Trunking. Contents

Port Trunking. Contents 12 Port Trunking Contents Overview..................................................... 12-2................................... 12-2 Port Connections and Configuration.......................... 12-3 Link

More information

Cisco Certified Network Associate Exam. Operation of IP Data Networks. LAN Switching Technologies. IP addressing (IPv4 / IPv6)

Cisco Certified Network Associate Exam. Operation of IP Data Networks. LAN Switching Technologies. IP addressing (IPv4 / IPv6) Cisco Certified Network Associate Exam Exam Number 200-120 CCNA Associated Certifications CCNA Routing and Switching Operation of IP Data Networks Operation of IP Data Networks Recognize the purpose and

More information

Comparison between PVST+ and MSTP

Comparison between PVST+ and MSTP Comparison between PVST+ and MSTP A Dell Technical White Paper Dell Engineering November 2014 A Dell Best Practices Revisions Revision Date Description Author/Editor 4 11/05/2014 Comments incorporated.

More information

AlliedWare Plus OS How To Configure interoperation between PVST+ and RSTP or MSTP

AlliedWare Plus OS How To Configure interoperation between PVST+ and RSTP or MSTP AlliedWare Plus OS How To Configure interoperation between PVST+ and RSTP or MSTP Introduction Spanning trees that protect networks from loops can provide better traffic load balancing if traffic in different

More information

SSVVP SIP School VVoIP Professional Certification

SSVVP SIP School VVoIP Professional Certification SSVVP SIP School VVoIP Professional Certification Exam Objectives The SSVVP exam is designed to test your skills and knowledge on the basics of Networking, Voice over IP and Video over IP. Everything that

More information

DATA CENTER. Best Practices for High Availability Deployment for the Brocade ADX Switch

DATA CENTER. Best Practices for High Availability Deployment for the Brocade ADX Switch DATA CENTER Best Practices for High Availability Deployment for the Brocade ADX Switch CONTENTS Contents... 2 Executive Summary... 3 Introduction... 3 Brocade ADX HA Overview... 3 Hot-Standby HA... 4 Active-Standby

More information

Networking and High Availability

Networking and High Availability TECHNICAL BRIEF Networking and High Availability Deployment Note Imperva appliances support a broad array of deployment options, enabling seamless integration into any data center environment. can be configured

More information

Configuring VLANs. Understanding VLANs CHAPTER

Configuring VLANs. Understanding VLANs CHAPTER CHAPTER 12 This chapter describes how to configure normal-range VLANs (VLAN IDs 1 to 1005) and extended-range VLANs (VLAN IDs 1006 to 4094) on the Catalyst 2960 switch. It includes information about VLAN

More information

HARTING Ha-VIS Management Software

HARTING Ha-VIS Management Software HARTING Ha-VIS Management Software People Power Partnership HARTING Management Software Network Management Automation IT - with mcon Switches from HARTING With the Ha-VIS mcon families, HARTING has expanded

More information

CCNP v2 Eğitimi İçeriği

CCNP v2 Eğitimi İçeriği Öngereksinimler: CCNA http://www.cliguru.com/ccna Kurs Tanımı: CCNP v2 Eğitimi İçeriği Giriş seviyesi network bilgilerine sahip katılımcıları network'ün temeli olan Routing Switching alanında orta üst

More information

Configuring IEEE 802.1ak MVRP and MRP

Configuring IEEE 802.1ak MVRP and MRP CHAPTER 21 This chapter describes how to configure the IEEE 802.1ak Multiple VLAN Registration Protocol () and Multiple Registration Protocol (MRP) as implemented in accordance with the IEEE 802.1ak standard.

More information

Autumn Oct 21, Oct 21, 2004 CS573: Network Protocols and Standards 1 Oct 21, 2004 CS573: Network Protocols and Standards 2

Autumn Oct 21, Oct 21, 2004 CS573: Network Protocols and Standards 1 Oct 21, 2004 CS573: Network Protocols and Standards 2 IPv4 IP: Addressing, ARP, Routing Protocols and Standards Autumn 2004-2005 IP Datagram Format IPv4 Addressing ARP and RARP IP Routing Basics Subnetting and Supernetting ICMP Address Translation (NAT) Dynamic

More information

Lab 4-1 Inter-VLAN Routing with an External Router

Lab 4-1 Inter-VLAN Routing with an External Router Lab 4-1 Inter-VLAN Routing with an External Router Topology Diagram Objective This lab configures inter-vlan routing using an external router, also known as a router-on-a-stick. Scenario Step 1 Inter-VLAN

More information

Hot Standby Routing Protocol Virtual Router Redundancy Protocol

Hot Standby Routing Protocol Virtual Router Redundancy Protocol Hot Standby Routing Protocol Virtual Router Redundancy Protocol Pietro Nicoletti piero[at]studioreti.it HSRP-VRRP_E - 1 P. Nicoletti: see note pag. 2 Copyright note This set of transparencies, hereinafter

More information

Network Virtualization and Data Center Networks 263-3825-00 Data Center Virtualization - Basics. Qin Yin Fall Semester 2013

Network Virtualization and Data Center Networks 263-3825-00 Data Center Virtualization - Basics. Qin Yin Fall Semester 2013 Network Virtualization and Data Center Networks 263-3825-00 Data Center Virtualization - Basics Qin Yin Fall Semester 2013 1 Walmart s Data Center 2 Amadeus Data Center 3 Google s Data Center 4 Data Center

More information

Layer 3 Routing User s Manual

Layer 3 Routing User s Manual User s Manual Second Edition, July 2011 www.moxa.com/product 2011 Moxa Inc. All rights reserved. User s Manual The software described in this manual is furnished under a license agreement and may be used

More information

Seminar Seite 1 von 10

Seminar Seite 1 von 10 Seminar Seite 1 von 10 CISCO - Troubleshooting and Maintaining Cisco IP Networks (TSHOOT) Dauer: 5 Tage Kosten: 2.490,00 EUR (pro Person / zzgl. MwSt) Ziele: Der Kurs Implementing Cisco Switched Networks

More information

estpassport Bessere Qualität, bessere Dienstleistungen!

estpassport Bessere Qualität, bessere Dienstleistungen! T estpassport Q&A Bessere Qualität, bessere Dienstleistungen! Exam : HP0-Y30 Title : Implementing HP Networking Technologies Version : Demo 1 / 9 1.Which A-Series switch is designed for the large data

More information

Expert Reference Series of White Papers. Planning for the Redeployment of Technical Personnel in the Modern Data Center

Expert Reference Series of White Papers. Planning for the Redeployment of Technical Personnel in the Modern Data Center Expert Reference Series of White Papers Planning for the Redeployment of Technical Personnel in the Modern Data Center info@globalknowledge.net www.globalknowledge.net Planning for the Redeployment of

More information

Networking and High Availability

Networking and High Availability yeah SecureSphere Deployment Note Networking and High Availability Imperva SecureSphere appliances support a broad array of deployment options, enabling seamless integration into any data center environment.

More information

What is VLAN Routing?

What is VLAN Routing? Application Note #38 February 2004 What is VLAN Routing? This Application Notes relates to the following Dell product(s): 6024 and 6024F 33xx Abstract Virtual LANs (VLANs) offer a method of dividing one

More information

Use MAC-Forced Forwarding with DHCP Snooping to Create Enhanced Private VLANs

Use MAC-Forced Forwarding with DHCP Snooping to Create Enhanced Private VLANs How To Use MAC-Forced Forwarding with DHCP Snooping to Create Enhanced Private VLANs Introduction In a large network where internal users cannot be trusted, it is nearly impossible to stop a host from

More information

Ethernet Storage Best Practices

Ethernet Storage Best Practices Technical Report Ethernet Storage Best Practices David Klem, Trey Layton, Frank Pleshe, NetApp January 2010 TR-3802 TABLE OF CONTENTS 1 INTRODUCTION... 3 2 USING VLANS FOR TRAFFIC SEPARATION... 3 2.1 VLAN

More information

Intel Advanced Network Services Software Increases Network Reliability, Resilience and Bandwidth

Intel Advanced Network Services Software Increases Network Reliability, Resilience and Bandwidth White Paper Network Connectivity Intel Advanced Network Services Software Increases Network Reliability, Resilience and Bandwidth Adapter teaming is a long-proven method for increasing network reliability,

More information

Virtual PortChannel Quick Configuration Guide

Virtual PortChannel Quick Configuration Guide Virtual PortChannel Quick Configuration Guide Overview A virtual PortChannel (vpc) allows links that are physically connected to two different Cisco Nexus 5000 Series devices to appear as a single PortChannel

More information

RSTP to MST Spanning Tree Migration in a Live Datacenter. NANOG47 October 20, 2009 Dani Roisman droisman ~ at ~ peakwebconsulting ~ dot ~ com

RSTP to MST Spanning Tree Migration in a Live Datacenter. NANOG47 October 20, 2009 Dani Roisman droisman ~ at ~ peakwebconsulting ~ dot ~ com RSTP to MST Spanning Tree Migration in a Live Datacenter NANOG47 October 20, 2009 Dani Roisman droisman ~ at ~ peakwebconsulting ~ dot ~ com Introductions Slide 1 What Is This Talk About? We found ourselves

More information

Management Software. Web Browser User s Guide AT-S106. For the AT-GS950/48 Gigabit Ethernet Smart Switch. Version 1.0.0. 613-001339 Rev.

Management Software. Web Browser User s Guide AT-S106. For the AT-GS950/48 Gigabit Ethernet Smart Switch. Version 1.0.0. 613-001339 Rev. Management Software AT-S106 Web Browser User s Guide For the AT-GS950/48 Gigabit Ethernet Smart Switch Version 1.0.0 613-001339 Rev. A Copyright 2010 Allied Telesis, Inc. All rights reserved. No part of

More information

Introduction about cisco company and its products (network devices) Tell about cisco offered courses and its salary benefits (ccna ccnp ccie )

Introduction about cisco company and its products (network devices) Tell about cisco offered courses and its salary benefits (ccna ccnp ccie ) CCNA Introduction about cisco company and its products (network devices) Tell about cisco offered courses and its salary benefits (ccna ccnp ccie ) Inform about ccna its basic course of networking Emergence

More information