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Introduction

BIG-IP® Reference Guide 4-1

Introduction

This chapter describes the elements that make up the high-level network of

BIG-IP. The high-level network is distinct from the base network, which is

configured with the Setup utility.

Just as the base network is built on the BIG-IP interfaces, the high-level

network is built on the load balancing pool. The high-level network includes

all of the properties associated with pools, as well as virtual servers, and

nodes. It can also include pool-selection rules, as well as services, proxies,

SNATs, NATs, and health monitor associations for nodes.

• Pools represent groups of nodes that can receive traffic from BIG-IP

according to a specified load balancing method.

• Rules enable a virtual server to choose among multiple pools based on

selection criteria. In the form of cache rules, they also allow the virtual

server to cache content intelligently based on frequency of access.

• Proxies are used for SSL acceleration and content conversion

(akamaization) where these features are present.

• Virtual Servers can be of four types: standard, wildcard, network, or

forwarding.

• Proxies are used for SSL acceleration and content conversion

(akamaization) where these features are present.

• Services correspond to the ports (for example, port 80 and port 443)

specified for nodes as they are defined in load balancing pools. Service

options include enabling/disabling of service, connection limits, and

timeouts for UDP and TCP.

• SNATs and NATs are secure network address translations and network

address translations, respectively, and are used primarily to allow servers

to establish outgoing connections as clients.

• Health monitors are status checking devices that may be configured by

the user, and are associated with nodes for ongoing monitoring.

The remaining sections of this chapter describe each of these elements and

the procedures for configuring them for BIG-IP.

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Dell 3-DNS Especificaciones Pagina 81