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Prestige 2602HWNLI-D7A Support Notes
All contents copyright (c) 2007 ZyXEL Communications Corporation.
76
Using IP Alias
What is IP Alias ?
In a typical environment, a LAN router is required to connect two local networks. The Prestige 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 Prestige's single user account. See the figure below.
The Prestige supports three virtual LAN interfaces via its single physical Ethernet interface. The first network
can be configured in menu 3.2 as usual. The second and third networks that we call 'IP Alias 1' and 'IP Alias 2'
can be configured in menu 3.2.1-IP Alias Setup.
There are three internal virtual LAN interfaces for the Prestige 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 Prestige as shown below when the three networks are configured. If
the Prestige's DHCP is also enabled, the IP pool for the clients can be any of the three networks.
Copyright (c) 1994 - 2004 ZyXEL Communications Corp.
ras> ip ro st
Dest FF Len Interface Gateway Metric stat Timer Use
192.168.3.0 00 24 enif0:1 192.168.3.1 1 041b 0 0
192.168.2.0 00 24 enif0:0 192.168.2.1 1 041b 0 0
192.168.1.0 00 24 enif0 192.168.1.1 1 041b 0 0
ras>