Home Networking
LAN Setup
A LAN IP address is the IP address of a networking device in the LAN. You can use the Zyxel Device's LAN IP address to access its Web Configurator from the LAN. The DHCP server settings define the rules on assigning IP addresses to LAN clients on your network.
Use this screen to set the Local Area Network IP address and subnet mask of your Zyxel Device. Configure DHCP settings to have the Zyxel Device or a DHCP server assign IP addresses to devices. Click Network Setting > Home Networking to open the LAN Setup screen.
Follow these steps to configure your LAN settings.
1 Enter an IP address into the IP Address field. The IP address must be in dotted decimal notation. This will become the IP address of your Zyxel Device.
2 Enter the IP subnet mask into the IP Subnet Mask field. Unless instructed otherwise it is best to leave this alone, the configurator will automatically compute a subnet mask based upon the IP address you entered.
3 Click Apply to save your settings.
Network Setting > Home Networking > LAN Setup
Network Setting > Home Networking > LAN Setup (Continued)
The following table describes the fields in this screen.
Network Setting > Home Networking > LAN Setup 
Label
Description
Interface Group
Group Name
Select the interface group that you want to configure its LAN settings.
LAN IP Setup
IP Address
Enter the LAN IP address you want to assign to your Zyxel Device in dotted decimal notation, for example, 192.168.1.1 (factory default).
Subnet Mask
Enter the subnet mask of your network in dotted decimal notation, for example 255.255.255.0 (factory default). Your Zyxel Device automatically computes the subnet mask based on the IP address you enter, so do not change this field unless you are instructed to do so.
IGMP Snooping
See IGMP/MLD Overview for more information on IGMP snooping.
Active
Select Enable to allow the Zyxel Device to passively learn multicast group.
IGMP Mode
Select Standard Mode to forward multicast packets to a port that joins the multicast group and broadcast unknown multicast packets from the WAN to all LAN ports.
Select Blocking Mode to block all unknown multicast packets from the WAN.
DHCP Server State
DHCP
Select Enable to have your Zyxel Device assign IP addresses, an IP default gateway and DNS servers to LAN computers and other devices that are DHCP clients.
If you select Disable, you need to manually configure the IP addresses of the computers and other devices on your LAN.
If you select DHCP Relay, the Zyxel Device acts as a surrogate DHCP server and relays DHCP requests and responses between the remote server and the clients.
DHCP Relay Server Address
This field is only available when you select DHCP Relay in the DHCP field.
IP Address
Enter the IPv4 IP address of the actual remote DHCP server in this field.
IP Addressing Values
The IP Addressing Values fields appear only when you select Enable in the DHCP field.
Beginning IP Address
This field specifies the first of the contiguous addresses in the IP address pool.
Ending IP Address
This field specifies the last of the contiguous addresses in the IP address pool.
Auto reserve IP for the same host
Enable this if you want to reserve the IP address for the same host.
DHCP Server Lease Time
This is the period of time DHCP-assigned addresses is used. DHCP automatically assigns IP addresses to clients when they log in. DHCP centralizes IP address management on central computers that run the DHCP server program. DHCP leases addresses, for a period of time, which means that past addresses are “recycled” and made available for future reassignment to other systems.
This field is only available when you select Enable in the DHCP field.
Days/Hours/Minutes
DHCP server leases an address to a new client device for a period of time, called the DHCP lease time. When the lease expires, the DHCP server might assign the IP address to a different client device.
DNS Values
This field appears only when you select Enable in the DHCP field.
DNS
The Zyxel Device supports DNS proxy by default. The Zyxel Device sends out its own LAN IP address to the DHCP clients as the first DNS server address. DHCP clients use this first DNS server to send domain-name queries to the Zyxel Device. The Zyxel Device sends a response directly if it has a record of the domain-name to IP address mapping. If it does not, the Zyxel Device queries an outside DNS server and relays the response to the DHCP client.
Select DNS Proxy to have the DHCP clients use the Zyxel Device’s own LAN IP address. The Zyxel Device works as a DNS relay.
Select Static if you have the IP address of a DNS server. Enter the DNS server's IP address in the field to the right.
Select From ISP if your ISP dynamically assigns DNS server information (and the Zyxel Device's WAN IP address).
LAN IPv6 Mode Setup
IPv6 Active
Use this to enable or disable IPv6 on the Zyxel Device.
When IPv6 is used, the following fields need to be set.
Link Local Address Type
A link-local address uniquely identifies a device on the local network (the LAN). It is similar to a “private IP address” in IPv6. You can have the same link-local address on multiple interfaces on a device. A link-local unicast address has a predefined prefix of fe80::/10. The link-local unicast address format is as follows. Select EUI64 to allow the Zyxel Device to generate an interface ID for the LAN interface’s link-local address using the EUI-64 format. Otherwise, enter an interface ID for the LAN interface’s link-local address if you select Manual.
EUI64
Select this to have the Zyxel Device generate an interface ID for the LAN interface’s link-local address using the EUI-64 format.
Manual
Select this to manually enter an interface ID for the LAN interface’s link-local address.
LAN Global Identifier Type
Select EUI64 to have the Zyxel Device generate an interface ID using the EUI-64 format for its global address. Select Manual to manually enter an interface ID for the LAN interface’s global IPv6 address.
EUI64
Select this to have the Zyxel Device generate an interface ID using the EUI-64 format for its global address.
Manual
Select this to manually enter an interface ID for the LAN interface’s global IPv6 address.
LAN IPv6 Prefix Setup
Select Delegate prefix from WAN to automatically obtain an IPv6 network prefix from the service provider or an uplink router. Select Static to configure a fixed IPv6 address for the Zyxel Device’s LAN IPv6 address.
Delegate prefix from WAN
Select this option to automatically obtain an IPv6 network prefix from the service provider or an uplink router.
Static
Select this option to configure a fixed IPv6 address for the Zyxel Device’s LAN IPv6 address.
MLD Snooping / Multicast Snooping
Multicast Listener Discovery (MLD) allows an IPv6 switch or router to discover the presence of MLD hosts who wish to receive multicast packets and the IP addresses of multicast groups the hosts want to join on its network.
Active
Click this switch to enable or disable MLD Snooping on the Zyxel Device. When the switch goes to the right the function is enabled. Otherwise, it is not.
This allows the Zyxel Device to check MLD packets passing through it and learn the multicast group membership. It helps reduce multicast traffic.
MLD Mode
Select Standard Mode to forward multicast packets to a port that joins the multicast group and broadcast unknown multicast packets from the WAN to all LAN ports.
Select Blocking Mode to block all unknown multicast packets from the WAN.
LAN IPv6 Address Assign Setup
Select how you want to obtain an IPv6 address:
Stateless: The Zyxel Device uses IPv6 stateless auto-configuration. RADVD (Router Advertisement Daemon) is enabled to have the Zyxel Device send IPv6 prefix information in router advertisements periodically and in response to router solicitations. DHCPv6 server is disabled.
Stateful: The Zyxel Device uses IPv6 stateful auto-configuration. The DHCPv6 server is enabled to have the Zyxel Device act as a DHCPv6 server and pass IPv6 addresses to DHCPv6 clients.
LAN IPv6 DNS Assign Setup
Select how the Zyxel Device provide DNS server and domain name information to the clients:
From RA & DHCPv6 Server: The Zyxel Device provides DNS information through both router advertisements and DHCPv6.
From DHCPv6 Server: The Zyxel Device provides DNS information through DHCPv6.
From Router Advertisement: The Zyxel Device provides DNS information through router advertisements.
DHCPv6 Configuration
DHCPv6 Active
This shows the status of the DHCPv6. DHCP Server displays if you configured the Zyxel Device to act as a DHCPv6 server which assigns IPv6 addresses and/or DNS information to clients.
IPv6 Router Advertisement State
RADVD Active
This shows whether RADVD is enabled or not.
IPv6 Address Values
IPv6 Start Address
This field specifies the first of the contiguous addresses in the IPv6 address pool.
IPv6 End Address
This field specifies the last of the contiguous addresses in the IPv6 address pool.
IPv6 Domain Name
The field specifies the domain name of the IPv6 address.
IPv6 DNS Values
IPv6 DNS Server 1 – 3
Specify the IP addresses up to three DNS servers for the DHCP clients to use. Use one of the following ways to specify these IP addresses.
User Defined – Select this if you have the IPv6 address of a DNS server. Enter the DNS server IPv6 addresses the Zyxel Device passes to the DHCP clients.
From ISP – Select this if your ISP dynamically assigns IPv6 DNS server information.
Proxy – Select this if the DHCP clients use the IP address of this interface and the Zyxel Device works as a DNS relay.
Otherwise, select None if you do not want to configure IPv6 DNS servers.
DNS Query Scenario
Select how the Zyxel Device handles clients’ DNS information requests.
IPv4/IPv6 DNS Server: The Zyxel Device forwards the requests to both the IPv4 and IPv6 DNS servers and sends clients the first DNS information it receives.
IPv6 DNS Server Only: The Zyxel Device forwards the requests to the IPv6 DNS server and sends clients the DNS information it receives.
IPv4 DNS Server Only: The Zyxel Device forwards the requests to the IPv4 DNS server and sends clients the DNS information it receives.
IPv6 DNS Server First: The Zyxel Device forwards the requests to the IPv6 DNS server first and then the IPv4 DNS server. Then it sends clients the first DNS information it receives.
IPv4 DNS Server First: The Zyxel Device forwards the requests to the IPv4 DNS server first and then the IPv6 DNS server. Then it sends clients the first DNS information it receives.
Apply
Click Apply to save your changes.
Cancel
Click Cancel to restore your previously saved settings.