User`s guide

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If the IP address, Mask, Gateway, DNS server or Secondary DNS server parameters are
specified manually, but the option to use a DHCP server is later selected, any existing
manually specified parameters will override the DHCP supplied parameters. To change from
manual configuration to DHCP, be sure to remove all manually specified parameters first.
Related CLI Commands
Entity
Instance
Parameter
Values
Equivalent Web Parameter
eth n descr Free text field Description
eth n ipaddr Valid IP address IP Address
eth n mask Valid Subnet Mask Mask
eth n gateway IP address Gateway
eth n dnsserver IP address DNS Server
eth n secdns IP address Secondary DNS Server
eth n dhcpcli on, off
On = Get an IP address
automatically using DHCP
Off = Use the following IP address
Advanced
Configuration – Network> Interfaces> Ethernet> Eth n> Advanced
On units with only one Ethernet port, there may be multiple configurable Ethernet
instances. Ethernet 0 is the physical interface. These extra instances are treated as logical
Ethernet ports and can be used to assign more than one Ethernet IP address to a router.
On units with more than one physical Ethernet port, the Ethernet instances refer to the
different physical Ethernet ports. These units can be configured for either “HUB” mode or
“Port Isolate” mode.
In HUB mode all the Ethernet ports are linked together and behave like an Ethernet hub or
switch. This means that the router will respond to all of its Ethernet IP addresses on all of
its ports (as the hub/ switch behaviour links the ports together).
In Port Isolate mode the router will only respond to its Ethernet 0 IP address on physical
port “LAN 0”, its Ethernet 1 IP address on physical port “LAN 1”, etc. The router will not
respond to its Ethernet 1 address on port “LAN 0” unless routing has been configured
appropriately.
When configured for HUB mode it is important that no more than one of the router’s
Ethernet interfaces is connected to another hub or switch on the same physical network
otherwise an Ethernet loop can occur. The default behaviour is “HUB” rather than “Port
Isolate”.
Port Isolate mode
If the router is running in Port Isolate mode, the following will be displayed, with an option
to switch to Hub mode.
Hub Mode (factory default)