ZyXEL Communications ADSL2+ Ethernet/USB Gateway 660RU-Tx Series, User Manual

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Prestige 660RU-Tx Series User’s Guide
71 Chapter 6 WAN Setup
Figure 22 WAN Backup
The following table describes the labels in this screen.
Table 13 WAN Backup
LABEL DESCRIPTION
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.