ZyXEL Communications ISG50 User Manual

Chapter 12 Interfaces

ISG50 User’s Guide

Each field is described in the following table.  

The Ethernet Edit screen lets you configure IP address assignment, interface parameters, RIP 
settings, OSPF settings, DHCP settings, connectivity check, and MAC address settings. To access 
this screen, click an Edit icon in the Ethernet Summary screen. (See 

The WAN interface’s Edit > Configuration screen is shown here as an example.

Note: If you create IP address objects based on an interface’s IP address, subnet, or 

gateway, the ISG50 automatically updates every rule or setting that uses the object 

whenever the interface’s IP address settings change. For example, if you change 

LAN1’s IP address, the ISG50 automatically updates the corresponding interface-

based, LAN1 subnet address object.

With RIP, you can use Ethernet interfaces to do the following things.

• Enable and disable RIP in the underlying physical port or port group.
• Select which direction(s) routing information is exchanged - The ISG50 can receive routing 

information, send routing information, or do both.

• Select which version of RIP to support in each direction - The ISG50 supports RIP-1, RIP-2, and 

both versions.

• Select the broadcasting method used by RIP-2 packets - The ISG50 can use subnet broadcasting 

or multicasting.

Configuration > Network > Interface > Ethernet

Edit

Double-click an entry or select it and click Edit to open a screen where you can 
modify the entry’s settings. 

Remove

To remove a virtual interface, select it and click Remove. The ISG50 confirms you 
want to remove it before doing so.

Activate

To turn on an interface, select it and click Activate.

Inactivate

To turn off an interface, select it and click Inactivate.

Create Virtual 
Interface

To open the screen where you can create a virtual Ethernet interface, select an 
Ethernet interface and click Create Virtual Interface.

Object References

Select an entry and click Object References to open a screen that shows which 
settings use the entry. See 

 for an example.

#

This field is a sequential value, and it is not associated with any interface.

Status

This icon is lit when the entry is active and dimmed when the entry is inactive.

Name

This field displays the name of the interface.

IP Address

This field displays the current IP address of the interface. If the IP address is 0.0.0.0, 
the interface does not have an IP address yet.

This screen also shows whether the IP address is a static IP address (STATIC) or 
dynamically assigned (DHCP). IP addresses are always static in virtual interfaces.

Mask

This field displays the interface’s subnet mask in dot decimal notation.

Apply

Click Apply to save your changes back to the ISG50.

Reset

Click Reset to return the screen to its last-saved settings.