P-2602H(W)(L)-DxA Series User’s Guide

Figure 218 “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 ZyXEL Device supports up to three logical LAN interfaces with the ZyXEL Device 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 ZyXEL Device to your LAN. The following steps describe such a scenario.

1A computer on the LAN initiates a connection by sending a SYN packet to a receiving server on the WAN.

2The ZyXEL Device reroutes the packet to Gateway B, which is in Subnet 2.

3The reply from WAN goes through the ZyXEL Device to the computer on the LAN in Subnet 1.

Figure 219 IP Alias

378

Appendix H Triangle Route

Page 378
Image 378
ZyXEL Communications P-2602 manual Triangle Route Solutions, IP Aliasing, Appendix H Triangle Route