ZyXEL Communications Prestige 791R, User Manual

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Prestige 791R G.SHDSL Router
The Prestige supports both IGMP version 1 (
IGMP-v1
) and version 2 (
IGMP-v2 )
. At start up, the Prestige
queries all directly connected networks to gather group membership. After that, the Prestige periodically
updates this information. IP Multicasting can be enabled/disabled on the Prestige LAN and/or WAN
interfaces using menus 3.2 (LAN) and 11.3 (WAN). Select
None to disable IP Multicasting on these
interfaces.
6.1.7 IP Policies
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).
6.1.8 IP Alias
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. See
Section 6.2.2 to configure IP Alias on your
Prestige.
Figure 6-1 Physical Network Figure 6-2 Partitioned Logical Networks
LAN 6-5