Manual Chapter : BIG-IP Link Controller Solutions Guide v4.3: Introduction

Applies To:

Show Versions Show Versions

Link Controller

  • 4.3 PTF-02, 4.3 PTF-01, 4.3.0
Manual Chapter


Getting started

Before you start installing the BIG-IP Link Controller, we recommend that you browse this guide to find the solution that most closely addresses your needs. Briefly review the basic configuration tasks and the few pieces of information, such as IP addresses and host names, that you should gather in preparation for completing the tasks.

Once you find your solution and gather the necessary network information, turn to the Configuration Worksheet and Hardware Orientation poster for hardware installation instructions, and then return to this guide to follow the steps for setting up your chosen solution.

Choosing a configuration tool

The Link Controller offers both web-based and command line configuration tools, so that users can work in the environment with which they are most comfortable.

The Setup utility

All users will use the Setup utility. This utility guides you through the initial system setup. You can run the Setup utility from the command line, or from a web browser. The Setup utility prompts you to enter basic system information including a root password and the IP addresses that will be assigned to VLANs. For more information, see Chapter 2 of this guide.

The Configuration utility

The Configuration utility is a web-based application that you use to configure and monitor the setup on the Link Controller. Once you complete the installation instructions described in this guide, you can use the Configuration utility to perform the configuration steps necessary for your chosen load balancing solution. In the Configuration utility, you can also monitor current system performance, and download administrative tools such as the SNMP MIB or the SSH client. The Configuration utility is best viewed with the following browsers: Netscape Navigator® version 4.7, or Microsoft® Internet Explorer version 5.0 or later.

The bigpipe and bigtop command line utilities

The bigpipeTM utility is the command line counter-part to the Configuration utility. Using bigpipe commands, you can configure virtual servers, open ports to network traffic, and configure a wide variety of features. To monitor the Link Controller, you can use certain bigpipe commands, or you can use the bigtopTM utility, which provides real-time system monitoring. You can use the command line utilities directly on the Link Controller console, or you can run commands using a remote shell, such as the SSH client (encrypted communications only), or a Telnet client (if you are restricted by cryptography export laws). For detailed information about the command line syntax, see the Appendix A of the BIG-IP Link Controller Reference Guide.

Using the Administrator Kit

The Link Controller Administrator Kit provides all of the documentation you need to work with the BIG-IP Link Controller. The Link Controller includes the following printed documentation.

  • Hardware Orientation Poster
    This poster includes information about the Link Controller unit. It also contains important environmental warnings.
  • Configuration Worksheet
    This worksheet provides you with a place to plan the basic configuration for the Link Controller.

    The Link Controller also includes a resource CD-ROM that provides the following guides, in PDF format. These guides are also available from the Welcome screen when you log in to the Configuration utility on the Link Controller.

  • BIG-IP Link Controller Solutions Guide
    This guide provides examples of common link load balancing solutions using the Link Controller. Before you begin installing the hardware, we recommend that you browse this guide to find the load balancing solution that works best for you.
  • BIG-IP Link Controller Reference Guide
    This guide provides detailed configuration information for the Link Controller. It also provides syntax information for bigpipe commands, other command line utilities, configuration files, system utilities, and monitoring and administration information.

Stylistic conventions

To help you easily identify and understand important information, this section describes the stylistic conventions used in our documentation.

Using the solution examples

All examples in this documentation use only non-routable IP addresses. When you set up the solutions we describe, you must use IP addresses suitable to your own network in place of our sample addresses.

Identifying new terms

To help you identify sections where a term is defined, we show the term itself in bold italic text. For example, a virtual server is a specific combination of a virtual address and virtual port, associated with a content site that is managed by a Link Controller or other type of host server.

Identifying references to objects, names, and commands

We apply bold text 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, with the bigpipe pool <pool_name> show command, you can specify a specific pool to show by specifying a pool name for the <pool_name> variable.

Identifying references to other documents

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 bigpipe commands in the BIG-IP Link Controller Reference Guide, Appendix A, bigpipe Command Reference.

Identifying command syntax

We show 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 commands show the configuration of the specified pool name:

bigpipe pool <pool_name> show


b pool <pool_name> show

Table Intro.1 explains additional special conventions used in command line syntax.

Command line syntax conventions

Item in text



Indicates that the command continues on the following line, and that users should type the entire command without typing a line break.

< >

Identifies a user-defined parameter. For example, if the command has <your name>, type in your name, but do not include the brackets.


Separates parts of a command.

[ ]

Indicates that syntax inside the brackets is optional.


Indicates that you can type a series of items.

Finding additional help and technical support resources

You can find additional technical information about this product using the following resources:

  • Release notes
    Release notes for the current version of this product are available from the product web server home page, and are also available on the technical support site. The release notes contain the latest information for the current version, including a list of new features and enhancements, a list of fixes, and, in some cases, a list of known issues.
  • Online help
    You can find help online in three different locations:

    • The web server on the product has PDF versions of the guides included in the Administrator Kit.
    • The web-based Configuration utility has online help for each screen. Simply click the Help button.
    • Individual bigpipe commands have online help, including command syntax and examples, in standard UNIXTM man page format. Simply type the command followed by the word help, and the Link Controller displays the syntax and usage associated with the command.
  • Third-party documentation for software add-ons
    The Welcome screen in the Configuration utility and the resource CD-ROM both contain online documentation for all third-party software, such as GateD.
  • Technical support through the World Wide Web
    The F5 Networks Technical Support web site,, provides the latest technical notes, answers to frequently asked questions, updates for Administrator Kit guides (in PDF format), and the AskF5 natural language question and answer engine. To access this site, you need to obtain a customer ID and a password from the F5 Help Desk.

Learning more about the BIG-IP product family

The BIG-IP platform offers many different software systems. These systems can be stand-alone, or can run in redundant pairs, with the exception of the BIG-IP e-Commerce Controller, which is only available as a stand-alone system. You can easily upgrade from any special-purpose BIG-IP to the BIG-IP HA software, which supports all BIG-IP features.

  • The BIG-IP
    The BIG-IP HA, and HA+ software provides the full suite of local area load balancing functionality. The BIG-IP unit also has an optional 3-DNS software module which supports wide-area load balancing.
  • The BIG-IP e-Commerce Controller
    The BIG-IP e-Commerce Controller uses SSL acceleration technology to increase the speed and reliability of the secure connections that drive e-commerce sites.
  • The BIG-IP Link Controller
    The BIG-IP Link Controller uses metrics and thresholds to manage inbound and outbound traffic through multiple gateways (routers) and Internet Service Providers (ISPs).
  • The BIG-IP special purpose products
    The special purpose BIG-IP provides the ability to choose from three different BIG-IP feature sets. When you run the Setup utility, you specify one of three types:

    • The BIG-IP Load Balancer
      The BIG-IP Load Balancer provides basic load balancing features.
    • The BIG-IP FireGuard
      The BIG-IP FireGuard provides load balancing features that maximize the efficiency and performance of a group of firewalls.
    • The BIG-IP Cache Controller
      The BIG-IP Cache Controller uses content-aware traffic direction to maximize the efficiency and performance of a group of cache servers.