User`s manual

P-660R-F1 Support Notes

9. Using IP Alias

What is IP Alias?

In a typical environment, a LAN router is required to connect two local networks.

The P-660R-F1 can connect three local networks to the ISP or a remote node;

we call this function as 'IP Alias'. In this case, an internal router is not required.

For example, the network manager can divide the local network into three

networks and connect them to the Internet using P-660R-F1's single user

account. See the figure below.

The P-660R-F1 supports three virtual LAN interfaces via its single physical

Ethernet interface. The first network can be configured in Web Configurator,

Advanced Setup, Network -> LAN -> DHCP Setup. The second and third

networks that we call 'IP Alias 1' and 'IP Alias 2' can be configured in Network ->

LAN -> IP Alias.

There are three internal virtual LAN interfaces for the P-660R-F1 to route the

packets from/to the three networks correctly. They are enif0 for the major

network, enif0:0 for the IP alias 1 and enif0:1 for the IP alias 2. Therefore, three

routes are created in the P-660R-F1 as shown below when the three networks

are configured. If the P-660R-F1's DHCP is also enabled, the IP pool for the

clients can be any of the three networks.