ZyXEL Communications P870HNU-51B User Manual page 118

Chapter 6 LAN Setup
Table 29 Network > LAN > IP (continued)
LABEL
Enable DHCP
DHCP Server
IP Pool Starting
Address
Pool Size
Lease Time
DHCP Relay
Relay Server
DNS Server
DNS Servers Assigned by DHCP Server
If you do not configure DNS servers, the Device uses its LAN IP address and tells the DHCP clients on
the LAN that itself is the DNS server. When a LAN client sends a DNS query to the Device, the Device
forwards the query to its system DNS server you configured in the WAN screen.
Obtain DNS info
from a WAN
interface:
WAN Interface
Use the
following Static
DNS IP address
First DNS
Server
Second DNS
Server
IGMP Snooping
Enable IGMP
Snooping
Standard Mode
Blocking Mode
IP Alias
Enable IP Alias
IP Address
IP Subnet Mask
Apply
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DESCRIPTION
Select this to have the Device act as a DHCP server or DHCP relay agent.
Otherwise, deselect this to not have the Device provide any DHCP services. The
DHCP server will be disabled.
Select this option to have the Device assign IP addresses and provide subnet
mask, gateway, and DNS server information to the network. The Device is the
DHCP server for the network.
When the Device acts as a DHCP server, the following items need to be set:
This field specifies the first of the contiguous addresses in the IP address pool.
This field specifies the size, or count of the IP address pool.
This field specifies the lease time in days, hours and minutes of the IP address
assigned by the DHCP server.
Select this option to have the Device forward DHCP request to the DHCP server.
If you select DHCP Relay, enter the IP address of the DHCP server.
Select this to have the Device get the DNS server addresses from one of the
Device's WAN interfaces.
Select a WAN interface through which to get DNS server addresses.
Select this to have the Device use the DNS server addresses you configure
manually.
Enter the first DNS (Domain Name System) server IP address the Device
passes to the DHCP clients.
Enter the second DNS (Domain Name System) server IP address the Device
passes to the DHCP clients.
Select this option to enable IGMP snooping. This allows the Device to passively
learn multicast group.
Select this to have the Device forward multicast packets to a port that joins the
multicast group and broadcast unknown multicast packets from the WAN to all
LAN ports.
Select this to have the Device block all unknown multicast packets from the
WAN.
Select the check box to configure another LAN network for the Device.
Enter the IP address of your Device in dotted decimal notation.
Type the subnet mask of your network in dotted decimal notation, for example
255.255.255.0 (factory default).
Click Apply to save your changes back to the Device.
P-870HNU-51b User's Guide