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Chapter 11 Interfaces

ZyWALL USG 50 User’s Guide

This screen lets you configure IP address assignment and interface parameters for 
virtual interfaces. To access this screen, click an Add icon next to an Ethernet 

Add

Click this to create a new entry. 

Edit

Select an entry and click this to be able to modify it. 

Remove

Select an entry and click this to delete it. 

#

This field is a sequential value, and it is not associated with a specific 
entry.

IP Address

Enter the IP address to assign to a device with this entry’s MAC 
address.

MAC Address

Enter the MAC address to which to assign this entry’s IP address.

Description

Enter a description to help identify this static DHCP entry. You can use 
alphanumeric and ()+/:=?!*#@$_%- characters, and it can be up to 
60 characters long.

Connectivity 
Check

The interface can regularly check the connection to the gateway you 
specified to make sure it is still available. You specify how often the 
interface checks the connection, how long to wait for a response 
before the attempt is a failure, and how many consecutive failures are 
required before the ZyWALL stops routing to the gateway. The 
ZyWALL resumes routing to the gateway the first time the gateway 
passes the connectivity check.

Enable 

Connectivity 

Check

Select this to turn on the connection check.

Check Method

Select the method that the gateway allows. 

Select icmp to have the ZyWALL regularly ping the gateway you 
specify to make sure it is still available. 

Select tcp to have the ZyWALL regularly perform a TCP handshake 
with the gateway you specify to make sure it is still available. 

Check Period

Enter the number of seconds between connection check attempts.

Check Timeout Enter the number of seconds to wait for a response before the 

attempt is a failure.

Check Fail 

Tolerance

Enter the number of consecutive failures before the ZyWALL stops 
routing through the gateway.

Check Default 

Gateway

Select this to use the default gateway for the connectivity check.

Check this 

address

Select this to specify a domain name or IP address for the 
connectivity check. Enter that domain name or IP address in the field 
next to it.

Check Port

This field only displays when you set the Check Method to tcp. 
Specify the port number to use for a TCP connectivity check.

OK

Click OK to save your changes back to the ZyWALL.

Cancel

Click Cancel to exit this screen without saving.

Table 68   Configuration > Network > Interface > Bridge > Edit (continued)