Wireless Gateway Series User's Guide

ZyAIR Wireless Gateway Series User’s Guide
N-2 Triangle Route
Diagram N-2 “Triangle Route” Problem
The “Triangle Route” Solutions
This section presents you two solutions to the “triangle route” problem.
IP Aliasing
IP alias allows you to partition your network into logical sections over the same Ethernet interface. Your
ZyAIR supports up to three logical LAN interfaces with the ZyAIR being the gateway for each logical
network. By putting your LAN and Gateway B in different subnets, all returning network traffic must pass
through the ZyAIR to your LAN. The following steps describe such a scenario.
Step 1. A computer on the LAN initiates a connection by sending a SYN packet to a receiving server
on the WAN.
Step 2. The ZyAIR reroutes the packet to Gateway B in Subnet 2.
Step 3. The reply from WAN goes through the ZyAIR to the computer on the LAN in Subnet 1.