Using Ip Policy Routing - ZyXEL Communications ADSL2+ 4-port Security Gateway Support Notes

You can edit filter rule to accept or deny LAN packets from/to the IP alias 1/2
go through the P-662H-D by command in CLI:
lan index [index number]
Usage: index number =1 main LAN
lan filter <incoming|outgoing> <tcpip|generic> [set#]
Usage: set#= the corresponding filter set number you've configured
lan save
• IP Alias Setup
(1) Edit the first network in Web Configurator, Advanced Setup, Network ->
LAN -> IP/DHCP Setup by configuring the P-662H-D's first LAN IP address.
Key Settings:
DHCP
If the P-662H-D's DHCP server is enabled, the IP pool for the clients can
Setup
be any of the three networks.
TCP/IP
Enter the first LAN IP address for the P-662H-D. This will create the first
Setup
route in the enif0 interface.
(2) Edit the second and third networks in Network -> LAN -> IP Alias by
configuring the P-662H-D's second and third LAN IP addresses.
Key Settings:
Active it and enter the second LAN IP address for the P-662H-D. This will
IP Alias 1
create the second route in the enif0:0 interface.
Active it and enter the third LAN IP address for the P-662H-D. This will
IP Alias 2
create the third route in the enif0:1 interface.

10. Using IP Policy Routing

• What is IP Policy Routing (IPPR)?
Traditionally, routing is based on the destination address only and the router
takes the shortest path to forward a packet. IP Policy Routing (IPPR) provides
a mechanism to override the default routing behavior and alter the packet
forwarding based on the policy defined by the network administrator.
Policy-based routing is applied to incoming packets on a per interface basis,
prior to the normal routing. Network administrators can use IPPR to distribute
traffic among multiple paths. For example, if a network has both the Internet
All contents copyright © 2006 ZyXEL Communications Corporation.
2 IP Alias#1
3 IP Alias#2
P-662H-D Series Support Notes
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