Configuration Description
LVS has three load balancing modes: NAT, DR, and TUN. This document describes how to configure the DR mode and the difference between the DR and NAT modes. The TUN mode is not described.
In DR mode, the target MAC address in the request packet is changed to deliver the request to the real server. The real server directly returns the processing result to the client. The Director Server (DS) and the Real Server (RS) must be connected to the same physical network segment and in the same LAN. The DR mode is commonly used on the Internet.
Terms
Term |
Description |
|---|---|
DS |
Director Server, also called Virtual Server (VS), is the server where the LVS is deployed. |
RS |
RealServer, which is the server that processes services |
CIP |
Client IP address |
VIP |
Virtual IP address requested by the client |
DIP |
Director Server IP address, which is used for communication between the DS and RS |
RIP |
RealServer IP address, which is used for the communication between the RS and the DS |
Example: VIP: 192.168.1.100; DIP: 192.168.1.1; RIP: 192.168.1.2; 192.168.1.3; net: 255.255.255.255