ZyXEL Communications P-791R, User Manual

Page: 181 / 358

Chapter 20 LAN Setup
P-791R v2 User’s Guide
181
20.4 LAN IP Alias
Use menu 3.2 to configure the first network, and you use menu 3.2.1 to configure the other
two networks. Move the cursor to the
Edit IP Alias field, press
[SPACE BAR]
to choose
Yes
and press [ENTER] to configure the second and third network.
Primary DNS
Server
Secondary DNS
Server
The ZyXEL Device passes a DNS (Domain Name System) server IP address (in
the order you specify here) to the DHCP clients.
Select
From ISP if your ISP dynamically assigns DNS server information (and the
ZyXEL Device's WAN IP address). The IP Address field below displays the (read-
only) DNS server IP address that the ISP assigns.
Select
User-Defined if you have the IP address of a DNS server. Enter the DNS
server's IP address in the IP Address field below. If you chose User-Defined , but
leave the IP address set to 0.0.0.0, User-Defined changes to None after you save
your changes. If you set a second choice to User-Defined , and enter the same IP
address, the second User-Defined changes to None after you save your changes.
Select DNS Relay to have the ZyXEL Device act as a DNS proxy. The ZyXEL
Device's LAN IP address displays in the I P Address field below (read-only). The
ZyXEL Device tells the DHCP clients on the LAN that the ZyXEL Device itself is the
DNS server. When a computer on the LAN sends a DNS query to the ZyXEL
Device, the ZyXEL Device forwards the query to the ZyXEL Device's system DNS
server (configured in menu 1) and relays the response back to the computer. You
can only select DNS Relay for one of the three servers; if you select DNS Relay for
a second or third DNS server, that choice changes to
None
after you save your
changes.
Select
None if you do not want to configure DNS servers. If you do not configure a
DNS server, you must know the IP address of a machine in order to access it.
Remote DHCP
Server
If Relay is selected in the DHCP field above, then type the IP address of the actual
remote DHCP server here.
TCP/IP Setup:
IP Address Enter the LAN IP address of your ZyXEL Device in dotted decimal notation
IP Subnet Mask Your ZyXEL Device will automatically calculate the subnet mask based on the IP
address that you assign. Unless you are implementing subnetting, use the subnet
mask computed by the ZyXEL Device.
RIP Direction Press [SPACE BAR] and then [ENTER] to select the RIP direction. Options are:
Both , In Only , Out Only or None .
Version Press [SPACE BAR] and then [ENTER] to select the RIP version. Options are:
RIP-1 , RIP-2B or RIP-2M .
Multicast IGMP (Internet Group Multicast Protocol) is a session-layer protocol used to
establish membership in a Multicast group. The ZyXEL Device supports both IGMP
version 1 ( IGMP-v1 ) and version 2 ( IGMP-v2 ). Press [SPACE BAR] and then
[ENTER] to enable IP Multicasting or select None (default) to disable it.
IP Policies You can apply up to four policy routes for this remote node. Configure the policy
routes in menu 25 first. See Chapter 31 on page 261 for information about policy
routes.
Edit IP Alias The ZyXEL Device supports three logical LAN interfaces via its single physical
Ethernet interface with the ZyXEL Device itself as the gateway for each LAN
network. Press [SPACE BAR] to select Yes and then press [ENTER] to display
menu 3.2.1.
When you have completed this menu, press [ENTER] at the prompt [Press ENTER to Confirm…] to
save your configuration, or press [ESC] at any time to cancel.
Table 60 Menu 3.2: TCP/IP and DHCP Ethernet Setup (continued)
FIELD DESCRIPTION