ZyXEL p-660h-61 Guida Utente

Prestige 660H Series User’s Guide 

Internet Access 

         24-1 

Refer to the chapters on the web configurator’s wizard, LAN and WAN screens for more background 
information on fields in the SMT screens covered in this chapter. 

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. Create policies using SMT menu 25 (see IP Policy Routing) and apply them on the Prestige 
LAN and/or WAN interfaces using menus 3.2 (LAN) and 11.3 (WAN). 

IP alias allows you to partition a physical network into different logical networks over the same 
Ethernet interface. The Prestige supports three logical LAN interfaces via its single physical Ethernet 
interface with the Prestige itself as the gateway for each LAN network. 

When you use IP alias, you can also configure firewall rules to control access between the LAN's 
logical networks (subnets).

 

 

The following figure shows a LAN divided into subnets A, B, and C. 

 

 

       Figure 24-1 Physical Network                        Figure 24-2 Partitioned Logical Networks 

Use menu 3.2.1 to configure IP Alias on your Prestige.