ZyXEL Communications ISG50 User Manual

 Chapter 12 Interfaces

ISG50 User’s Guide

This section introduces bridges and bridge interfaces and then explains the screens for bridge 
interfaces.

Send Version

This field is effective when RIP is enabled. Select the RIP version(s) used for sending 
RIP packets. Choices are 1, 2, and 1 and 2.

Receive Version

This field is effective when RIP is enabled. Select the RIP version(s) used for receiving 
RIP packets. Choices are 1, 2, and 1 and 2.

V2-Broadcast

This field is effective when RIP is enabled. Select this to send RIP-2 packets using 
subnet broadcasting; otherwise, the ISG50 uses multicasting.

OSPF Setting

See 

 for more information about OSPF.

Area

Select the area in which this interface belongs. Select None to disable OSPF in this 
interface.

Priority

Enter the priority (between 0 and 255) of this interface when the area is looking for a 
Designated Router (DR) or Backup Designated Router (BDR). The highest-priority 
interface identifies the DR, and the second-highest-priority interface identifies the BDR. 
Set the priority to zero if the interface can not be the DR or BDR.

Link Cost

Enter the cost (between 1 and 65,535) to route packets through this interface.

Passive 

Interface

Select this to stop forwarding OSPF routing information from the selected interface. As a 
result, this interface only receives routing information.

Authentication

Select an authentication method, or disable authentication. To exchange OSPF routing 
information with peer border routers, you must use the same authentication method 
that they use. Choices are:

Same-as-Area - use the default authentication method in the area

None - disable authentication

Text - authenticate OSPF routing information using a plain-text password

MD5 - authenticate OSPF routing information using MD5 encryption

Text 

Authentication 

Key

This field is available if the Authentication is Text. Type the password for text 
authentication. The key can consist of alphanumeric characters and the underscore, and 
it can be up to eight characters long.

MD5 

Authentication 

ID

This field is available if the Authentication is MD5. Type the ID for MD5 
authentication. The ID can be between 1 and 255.

MD5 

Authentication 

Key

This field is available if the Authentication is MD5. Type the password for MD5 
authentication. The password can consist of alphanumeric characters and the 
underscore, and it can be up to 16 characters long.

Related Setting

Configure WAN 

TRUNK 

Click WAN TRUNK to go to a screen where you can set this VLAN to be part of a WAN 
trunk for load balancing.

Configure Policy 

Route

Click Policy Route to go to the screen where you can manually configure a policy route 
to associate traffic with this VLAN.

OK

Click OK to save your changes back to the ISG50.

Cancel

Click Cancel to exit this screen without saving.

Configuration > Network > Interface > VLAN > Edit (continued)