ZyXEL Communications 802.11g HomePlug AV ADSL2+ Gateway P-660HWP-Dx - Manual (Page 384)

Appendix J Triangle Route
P-660HWP-Dx User’s Guide
36
Figure 223 “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 P-660HWP-Dx supports up to three logical LAN interfaces with the P-
660HWP-Dx 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 P-660HWP-Dx to
your LAN. The following steps describe such a scenario.
1 A computer on the LAN initiates a connection by sending a SYN packet to a receiving
server on the WAN.
2 The P-660HWP-Dx reroutes the packet to Gateway A, which is in Subnet 2.
3 The reply from WAN goes through the P-660HWP-Dx to the computer on the LAN in
Subnet 1.
Figure 224 IP Alias