Applies To:

Show Versions Show Versions

Manual Chapter: Introducing Implementations for Global Traffic Manager and Link Controller
Manual Chapter
Table of Contents   |   << Previous Chapter   |   Next Chapter >>

F5 Networks BIG-IP® system is a port-based, multilayer switch that supports virtual local area network (VLAN) technology. Because hosts within a VLAN can communicate at the data-link layer (Layer 2), a BIG-IP system reduces the need for routers and IP routing on the network. This in turn reduces equipment costs and boosts overall network performance. At the same time, the BIG-IP systems multilayer capabilities enable the system to process traffic at other OSI layers. The BIG-IP system can perform IP routing at Layer 3, as well as manage and secure TCP, UDP, and other application traffic at Layer 4 through Layer 7. The following software modules provide comprehensive traffic management and security for all traffic types. The modules are fully integrated to provide efficient solutions to meet any network, traffic management, and security needs.
BIG-IP® Local Traffic Manager
The Local Traffic Manager includes local traffic management features that help you make the most of network resources such as web servers. Using the powerful Configuration utility, you can customize the way that the BIG-IP system processes specific types of protocol and application traffic. By using features such as virtual servers, server pools, profiles, and iRulesTM, you ensure that traffic passing through the BIG-IP system is processed quickly and efficiently, while meeting all of your security needs. For more information, see the Configuration Guide for BIG-IP® Local Traffic Management.
BIG-IP® Global Traffic Manager
The Global Traffic Manager provides intelligent traffic management to your globally available network resources. Through the Global Traffic Manager, you can select from an array of load balancing modes, ensuring that your clients access the most responsive and robust resources at any given time. In addition, the Global Traffic Manager provides extensive monitoring capabilities so the health of any given resource is always available. For more information, see the Configuration Guide for BIG-IP® Global Traffic Management.
BIG-IP® Link Controller
The Link Controller seamlessly monitors availability and performance of multiple WAN connections to intelligently manage bi-directional traffic flows to a site; providing fault tolerant, optimized Internet access regardless of connection type or provider. The Link Controller ensures that traffic is always sent over the best available link to maximize user performance and minimize bandwidth cost to a data center. For more information, see the Configuration Guide for BIG-IP® Link Controller.
BIG-IP®Application Security Manager
The Application Security Manager provides web application protection from application-layer attacks. The Application Security Manager protects web applications from both generalized and targeted application layer attacks including buffer overflow, SQL injection, cross-site scripting, and parameter tampering. For more information, see the Configuration Guide for BIG-IP® Application Security Management.
The BIG-IP® Global Traffic Manager and Link Controller: Implementations guide is designed to help you accomplish specific configuration tasks associated with the Global Traffic Manager or Link Controller. Each chapter focuses on a specific scenario, providing an overview of the situation to which the implementation applies, and a detailed example of how to configure the system to accomplish the objectives outlined in the implementation scenario. The steps outlined in each chapter are designed so that you can quickly apply them to your own network.
Before you begin configuring a solution, we recommend that you run the Setup utility on the Global Traffic Manager or Link Controller to configure basic network and network elements such as static and floating self IP addresses, interfaces, and VLANs.
All users need to use the web-based Configuration utility in order to license the system for the first time. In addition to setting up the management network and initial traffic management software configuration, you use the Configuration utility to perform additional configuration steps necessary for your configuration. The Configuration utility supports Netscape® Navigator, version 7.1, or other browsers built on the same engine, such as Mozilla® Firefox®, and Camino; and Microsoft® Internet Explorer® version 6.x. For information on setting user preferences for the Configuration utility, see the BIG-IP® Network and System Management Guide.
The Global Traffic Manager is a system that monitors the availability and performance of global resources, and uses that information to manage network traffic patterns. The Global Traffic Manager uses load balancing algorithms, topology-based routing, and iRules to control and distribute traffic according to specific policies. The system is highly configurable, and its web-based configuration utility allows for easy system setup and monitoring.
Ensure wide-area persistence by maintaining a mapping between a local DNS server and a virtual server in a wide IP pool
For more information on the full capabilities of the Global Traffic Manager, see the Configuration Guide for BIG-IP® Global Traffic Management.
The Link Controller is a dedicated IP application switch that manages traffic to and from a site across multiple links, regardless of connection type or provider. The Link Controller provides granular traffic control for Internet gateways, allowing you to define how traffic is distributed across links in a way that meets your business priorities. The Link Controller also transparently monitors the availability and health of links to optimally direct traffic across the best available link.
Each chapter in this guide provides information on a specific implementation of either the Global Traffic Manager or Link Controller. Within each chapter, we provide examples so that you can easily see how you might incorporate the implementation into your existing network.
Introducing Implementations for Global Traffic Manager and Link Controller
This chapter provides an overview of BIG-IP systems, the Global Traffic Manager, the Link Controller, the implementations covered in each chapter, style conventions, and where you can find additional product information.
Delegating DNS Traffic to Wide IPs
This chapter focuses on adding a Global Traffic Manager to the network to handle wide IP traffic, while keeping an existing DNS server to handle all other DNS-related traffic.
Replacing a DNS Server with the Global Traffic Manager
This chapter focuses on adding a Global Traffic Manager to a network to handle not only wide IP traffic, but all DNS traffic for the network.
Sending Traffic Through the Global Traffic Manager
This chapter focuses on adding a Global Traffic Manager to a network in front of an existing DNS server. As DNS-related traffic enters the network, it is first scanned by the Global Traffic Manager to see if its destination is a wide IP. If it is, the system handles the traffic. If not, the system sends the traffic on to the existing DNS server.
Integrating the Global Traffic Manager with BIG-IP Systems
This chapter focuses on how authorizing the Global Traffic Manager and other BIG-IP systems to communicate with each other.
Adding New Global Traffic Managers to a Synchronization Group
This chapter focuses on the changes in synchronization between the 4.x version of 3-DNS Controller (the precursor to the Global Traffic Manager) and the present 9.x version. In addition, this solution describes how to add a new Global Traffic Manager to the network and synchronize it with an existing one.
Cost-Based Load Balancing
This chapter focuses on configuring a Link Controller to load balance traffic based on the costs associated with each network link.
Bandwidth Load Balancing
This chapter focuses on configuring a Link Controller to load balance traffic based on the bandwidth values associated with each network link.
Setting Up a Global Traffic Manager Redundant System
This chapter focuses on setting up a redundant system consisting of two Global Traffic Managers.
Setting up a Link Controller Redundant System
This chapter focuses on setting up a redundant system consisting of two Link Controllers.
Authenticating with Third-Party SSL Certificates
This chapter focuses on replacing the self-signed certificates included with a BIG-IP system with a third-party certificate authenticated by an external Certificate Authority.
Monitoring Third-Party Servers with SNMP
This chapter focuses on how to create an SNMP monitor and assign it to a third-party server.
Each of these implementations includes sample network information, such as IP addresses and other configuration settings, which provides context for the implementation. You can use the scenarios included with each implementation as a template, replacing the sample data with the corresponding data from an actual network.
This guide is designed to provide detailed information on different ways of using a Global Traffic Manager or Link Controller system. Each implementation requires that you have some familiarity with how to configure these products. If you need additional information on these products, the following documentation is available:
Platform Guide
This guide includes information about the BIG-IP hardware. It also contains important environmental warnings.
Installation, Licensing, and Upgrades for BIG-IP® Systems
This guide provides detailed information about installing upgrades to the BIG-IP system. It also provides information about licensing the BIG-IP system software, and connecting the system to a management workstation or network.
BIG-IP® Network and System Management Guide
This guide provides topics such as adding VLANs, self IP addresses, and other system- and network-related tasks common to most BIG-IP products.
Configuration Guide for BIG-IP® Global Traffic Management
This guide focuses on the configuration capabilities of the Global Traffic Manager, such as creating distributed applications, wide IPs, and data centers.
Configuration Guide for BIG-IP® Link Controller
This guide focuses on the configuration capabilities of the Link Controller, such as creating links and designating paths for inbound wide IP traffic.
Each of these guides is available in PDF format from the AskF5SM web site, http://tech.f5.com. These guides are also available from the first web page you see when you log in to the administrative web server on the BIG-IP system.
To help you easily identify and understand certain types of information, this documentation uses the following stylistic conventions.
All examples in this documentation use only private IP addresses. When you set up the implementations described in this document, you must use IP addresses suitable to your own network in place of the sample IP addresses.
New terms are shown in bold italic text. For example, a wide IP is a mapping of a fully-qualified domain name to one or more pools of virtual servers that host the domains content.
We refer to all products in the BIG-IP product family as BIG-IP systems. We refer to the software modules by their name; for example, we refer to the Global Traffic Manager module as simply the Global Traffic Manager. If configuration information relates to a specific hardware platform, we note the platform.
We apply bold text formatting to a variety of items to help you easily pick them out of a block of text. These items include web addresses, IP addresses, utility names, and portions of commands, such as variables and keywords. For example, the nslookup command requires that you include at least one <ip_address> variable.
We use italic text to denote a reference to another document. In references where we provide the name of a book as well as a specific chapter or section in the book, we show the book name in bold, italic text, and the chapter/section name in italic text to help quickly differentiate the two. For example, you can find information about the Local Traffic Manager in Chapter 13, Configuring SNATs and NATs, in the Configuration Guide for BIG-IP® Local Traffic Management.
We show actual, complete commands in bold Courier text. Note that we do not include the corresponding screen prompt, unless the command is shown in a figure that depicts an entire command line screen. For example, the following command sets the Global Traffic Manager load balancing mode to Round Robin:
Table 1.1 explains additional special conventions used in command line syntax.
Online help for the Global Traffic Manager and Link Controller
The Configuration utility has online help for each screen. The online help contains descriptions of each control and setting on the screen. Click the Help tab in the left navigation pane to view the online help for a screen.
Welcome screen in the Configuration utility
The Welcome screen in the Configuration utility contains links to many useful web sites and resources, including:
F5 Networks Technical Support web site
The F5 Networks Technical Support web site, http://tech.f5.com, provides the latest documentation for the product, including:
The AskF5SM natural language question and answer engine
Table of Contents   |   << Previous Chapter   |   Next Chapter >>

Was this resource helpful in solving your issue?




NOTE: Please do not provide personal information.



Incorrect answer. Please try again: Please enter the words to the right: Please enter the numbers you hear:

Additional Comments (optional)