Cisco Cisco IOS Software Release 12.2(18)SXF

The IOS SLB feature is an IOS-based solution that provides load balancing for a variety of networked 
devices and services, including:

Application servers, such as Hypertext Transfer Protocol (HTTP), Telnet, File Transfer Protocol 
(FTP), and so on

Firewalls

Service nodes, such as authentication, authorization, and accounting (AAA) servers, web caches, 
and so on

In addition, the IOS SLB Exchange Director enables advanced load-balancing routing capabilities for 
the following additional service nodes:

Cisco Mobile Exchange (CMX) components:

Cisco Content Services Gateways (CSGs)

If you are running with Supervisor Engine 32 (SUP32-MSFC2A), CSG Release 3.1(3)C7(1) or 
later is required.

Cisco gateway GPRS support nodes (GGSNs)

Cisco Service Selection Gateways (SSGs)

Cisco Home Agents

Other components for mobile, Public Wireless LAN (PWLAN), and Service Provider networks:

Wireless Application Protocol (WAP) gateways

Protocol optimization gateways

Non-Cisco GGSNs and Home Agents

Other RADIUS-aware flow gateways. These gateways are proxies or routing nodes that receive 
RADIUS Authorization and Accounting requests for users that route flows through the 
gateways. The Exchange Director binds the RADIUS and data flows to the same gateway, 
ensuring that the gateway receives a complete and consistent view of the network activity for 
the user.

The Exchange Director also adds the following features: