NETGEAR UTM5 Reference Manual page 79

ProSecure Unified Threat Management (UTM) Appliance
4. Locate the Failure Detection Method section onscreen (see the following figure). Enter the
settings as explained in the following table.
Figure 44.
Table 17. Failure detection method settings
Setting
WAN Failure Detection Method
Select a failure detection method from the drop-down list. DNS queries or pings are sent through the WAN
interface that is being monitored. The retry interval and number of failover attempts determine how quickly
the UTM switches from the primary link to the backup link in case the primary link fails, or when the primary
link comes back up, switches back from the backup link to the primary link.
WAN DNS
Custom DNS
Ping
Retry Interval is
Failover after
Note: The default time to roll over after the primary WAN interface fails is
2 minutes. The minimum test period is 30 seconds, and the
minimum number of tests is 4.
5. Click Apply to save your settings.
Description
DNS queries are sent to the DNS server that is configured in the Domain Name
Server (DNS) Servers section of the WAN ISP screen (see
Internet Connection on page 70).
DNS queries are sent to the specified DNS server.
DNS Server The IP address of the DNS server.
Pings are sent to a server with a public IP address. This server should not reject the
ping request and should not consider ping traffic to be abusive.
IP Address The IP address of the ping server.
The retry interval in seconds. The DNS query or ping is sent periodically after every
test period. The default test period is 30 seconds.
The number of failover attempts. The primary WAN interface is considered down
after the specified number of queries have failed to elicit a reply. The backup
interface is brought up after this situation has occurred. The failover default is
4 failures.
Manually Configuring Internet and WAN Settings
79
Manually Configure the