P-660R-Tx v3 Series Support Notes
53
All contents copyright © 2008 ZyXEL Communications Corporation.
10. Using IP Alias
What is IP Alias?
In a typical environment, a LAN router is required to connect two local
networks. The P-660R-Tx v3 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-Tx
v3's single user account. See the figure below.
The P-660R-Tx v3 supports three virtual LAN interfaces via its single physical
Ethernet interface. The first network can be configured in Web Configurator,
Advanced Setup,
Interface Setup -> LAN -> DHCP
. The second and third
networks can be configured in telnet CLI.
There are three internal virtual LAN interfaces for the P-660R-Tx v3 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-Tx v3 as shown below when the three
networks are configured. You can edit ip alias routes of P-660R-Tx v3 by
command in
CLI
:
lan index [index number]
Usage: index number =1 main LAN
2 IP Alias#1
3 IP Alias#2
lan ipaddr <ip address> <Mask>
lan sacve
If the P-660R-Tx v3's DHCP is also enabled, the IP pool for the clients can be
any of the three networks.
P-660R-Tx
v3
