ZyXEL Communications ZyWALL 2 Series User Manual

ZyWALL 2 Series User’s Guide 

WAN Screens 

6-17 

Check WAN 
IP Address 

Configuration of this field is optional. If you do not enter an IP address here, the ZyWALL 
will use the default gateway IP address. Configure this field to test your ZyWALL's WAN 
accessibility. Type the IP address of a reliable nearby computer (for example, your ISP's 
DNS server address). If you are using PPTP or PPPoE Encapsulation, type "0.0.0.0" to 
configure the ZyWALL to check the PVC (Permanent Virtual Circuit) or PPTP tunnel. 

Fail Tolerance 

Type the number of times your ZyWALL may attempt and fail to connect to the Internet 
before traffic is forwarded to the backup gateway. 

Period (sec) 

Type the number of seconds for the ZyWALL to wait between checks to see if it can 
connect to the WAN IP address (Check WAN IP Address field) or default gateway. 
Allow more time if your destination IP address handles lots of traffic. 

Timeout (sec) 

Type the number of seconds for your ZyWALL to wait for a ping response from the IP 
Address in the Check WAN IP Address field before it times out. The WAN connection is 
considered "down" after the ZyWALL times out the number of times specified in the Fail 
Tolerance field. Use a higher value in this field if your network is busy or congested. 

Apply 

Click Apply to save your changes back to the ZyWALL. 

Reset 

Click Reset to begin configuring this screen afresh. 

To change your ZyWALL’s Dial Backup settings, click WAN, then the Dial Backup tab.  The screen 
appears as shown.