ZyXEL Communications 660R-6xC Series User Manual

Prestige 660R-6xC Series User’s Guide

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Chapter 6 WAN Setup

Figure 21   WAN Backup

The following table describes the labels in this screen.

Table 12   WAN Backup

Backup Type 

Select the method that the Prestige uses to check the DSL connection. 
Select DSL Link to have the Prestige check if the connection to the DSLAM is up. 

Select ICMP to have the Prestige periodically ping the IP addresses configured in 

the Check WAN IP Address fields.

Check WAN IP 

Address1-3

Configure this field to test your Prestige's WAN accessibility. Type the IP address of 

a reliable nearby computer (for example, your ISP's DNS server address). 

Note: If you activate either traffic redirect or dial backup, you must 
configure at least one IP address here. 

When using a WAN backup connection, the Prestige periodically pings the 

addresses configured here and uses the other WAN backup connection (if 

configured) if there is no response.

Fail Tolerance

Type the number of times (2 recommended) that your Prestige may ping the IP 

addresses configured in the Check WAN IP Address field without getting a 

response before switching to a WAN backup connection (or a different WAN backup 

connection).

Recovery Interval  When the Prestige is using a lower priority connection (usually a WAN backup 

connection), it periodically checks to whether or not it can use a higher priority 

connection.
Type the number of seconds (30 recommended) for the Prestige to wait between 

checks. Allow more time if your destination IP address handles lots of traffic.

Timeout 

Type the number of seconds (3 recommended) for your Prestige to wait for a ping 

response from one of the IP addresses in the Check WAN IP Address field before 

timing out the request. The WAN connection is considered "down" after the Prestige 

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.