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Manual Chapter: Overview
Manual Chapter
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You can use BIG-IP® Global Traffic Manager to monitor the availability and performance of global resources and use that information to manage network traffic patterns. Global Traffic Manager uses load balancing algorithms, topology-based routing, and iRules® to control and distribute traffic according to specific policies.
Global Traffic Manager is one of several products which compose the BIG-IP® product family. All products in the BIG-IP product family run on the powerful Traffic Management Operating System®, commonly referred to as TMOS®.
Ensure wide-area persistence by maintaining a mapping between a local domain name system (DNS) server (LDNS) and a virtual server in a wide IP pool
Global Traffic Manager offers a variety of security features that can help prevent hostile attacks on your site or equipment.
Secure administrative connections
Global Traffic Manager supports Secure Shell (SSH) administrative connections for remote administration from the command line. The web server, which hosts the web-based Configuration utility, supports SSL connections as well as user authentication.
Secure iQuery communications
Global Traffic Manager supports web certificate authentication for BIG-IP iQuery® protocol communications between itself and other systems running the big3d agent.
TCP wrappers
Global Traffic Manager supports the use of TCP wrappers to provide an extra layer of security for network connections.
If you use Global Traffic Manager in conjunction with a Local Traffic Manager system, it is important to understand the following network resources. Although you do not manage these resources directly through Global Traffic Manager, understanding their role in your network configuration can assist you in optimizing your networks availability and performance.
Self IP address
A self IP address is an IP address that you define on a VLAN of a BIG-IP system. Note that this concept does not apply to the management IP address of a BIG-IP system or to IP addresses on other devices.
Node
A node is a logical object on the BIG-IP system that identifies the IP address of a physical resource on the network, such as a web server. You define a node object in Local Traffic Manager.
In addition to the standard DNS and DNSSEC protocols, the Global Traffic Manager supports the BIG-IP iQuery protocol, which is used for collecting dynamic load balancing information. Global Traffic Manager also supports administrative protocols, such as Simple Network Management Protocol (SNMP), and Simple Mail Transfer Protocol (SMTP) (outbound only), for performance monitoring and notification of system events. For administrative purposes, you can use SSH, RSH, Telnet, and FTP. The Configuration utility supports HTTPS, for secure web browser connections using SSL, as well as standard HTTP connections.
You can use the proprietary SNMP agent to monitor status and current traffic flow using popular network management tools. This agent provides detailed data such as current connections being handled by each virtual server.
The Configuration utility is a browser-based graphical user interface that you use to configure and monitor Global Traffic Manager. Using the Configuration utility, you can define the load balancing configuration along with the network setup, including data centers, synchronization groups, and servers used for load balancing and path probing. In addition, you can configure advanced features, such as Topology mode settings and SNMP agents. The Configuration utility also monitors network traffic, current connections, load balancing statistics, performance metrics, and the operating system itself. The Welcome screen of the Configuration utility provides convenient access to downloads such as the SNMP MIB, and documentation for third-party applications, such as ZebOS®.
For the most current list of the supported browsers for the Configuration utility, see the current release note on the AskF5TM Knowledge Base web site, https://support.f5.com.
The Traffic Management Shell (tmsh) is a utility that you can use to configure Global Traffic Manager from the command line. Using tmsh, you can set up your network and configure local and global traffic management. In addition, you can configure advanced features, such as Topology mode settings and SNMP agents. You can also use tmsh to display information about performance, load balancing decisions, network traffic, and the operating system itself. For information about using tmsh to configure the system, see the tmsh man pages.
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