
12CHAPTER 1: INTRODUCING THE SERVER LOAD BALANCER
About the Server The SuperStack® 3 Server Load Balancer and Server Load Balancer Plus
Load Balancer provide support for connecting multiple 
Summary of Table 3 summarizes the hardware features that are supported in both Hardware Features models of the Server Load Balancer.
Table 3 Hardware Features
| 
 | Server Load Balancer | 
| Feature | Server Load Balancer Plus | 
| 
 | 
 | 
| Memory | ■ 64 MB for Server Load Balancer Plus | 
| 
 | ■ 32 MB for Server Load Balancer | 
| 12 10/100 LAN Ports | Supported | 
| 2 Gigabit Ethernet Ports | Supported | 
| SuperStack 3 Architecture | ■ Connects to a SuperStack 3 Advanced | 
| 
 | Redundant Power System (ARPS) | 
| 
 | ■ Installs in a  | 
| 
 | mounting | 
| 
 | 
 | 
Summary of Software Table 4 summarizes the software features that are supported in both Features models of the Server Load Balancer.
Table 4 Software Features
| 
 | Server Load Balancer | |
| Feature | Server Load Balancer Plus | |
| 
 | 
 | 
 | 
| Algorithms | ■ | Round Robin | 
| 
 | ■ | Weighted Round Robin | 
| 
 | ■ | Least Connections | 
| 
 | ■ | Quickest Last Response | 
| 
 | ■ | Quickest Average Response | 
| 
 | ■ | Weighted Percentage | 
| Port Trunking (Etherchannel) | Supported | |
| Up to 256 servers | Supported | |
| TCP/IP Sessions | ■ | 16,000 for the Server Load Balancer | 
| 
 | ■ 128,000 for the Server Load Balancer Plus | |
| Persistence Modes | ■ | Source IP | 
| 
 | ■ Secure Socket Layer (SSL) Session ID | |
| 
 | ■ | Cookie |