NETGEAR UTM25-100NAS, UTM10EW-100NAS manual Configuring the Internet Connections on, WAN1, WAN2

ProSecure Unified Threat Management UTM10 or UTM25 Reference Manual

Table 3-5. Auto-Rollover Mode Settings (UTM25 Only) (continued)

Setting Description (or Subfield and Description)

WAN Failure Detection Method

Select one of the following detection failure methods:

DNS lookup using	DNS queries are sent to the DNS server configured on the WAN ISP pages (see
WAN DNS Servers	“Configuring the Internet Connections” on page 3-2).
DNS lookup using	DNS queries are sent to this server through the WAN interface being monitored.
this DNS Server	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.
	Enter the following DNS settings:
	WAN1	The IP address of the DNS server for port WAN1.
	WAN2	The IP address of the DNS server for port WAN2.
	Retry Interval is	The retry interval in seconds. The DNS query is sent
		periodically after every test period. The default test period is
		30 seconds.
	Failover after	The number of failover attempts. The primary WAN link is
		considered down after the configured number of queries have
		failed to elicit a reply. The backup link is brought up after this
		has occurred. The failover default is 4 failures.
Ping these IP	A public IP address that does not reject the ping request and does not consider
addresses	ping traffic to be abusive. Queries are sent to this server 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.
	Enter the following DNS settings:
	WAN1	The IP address of the DNS server for port WAN1.
	WAN2	The IP address of the DNS server for port WAN2.
	Retry Interval is	The retry interval in seconds. The ping is sent periodically
		after every test period. The default test period is 30 seconds.
	Failover after	The number of failover attempts. The primary WAN link is
		considered down after the configured number of queries have
		failed to elicit a reply. The backup link is brought up after this
		has occurred. The failover default is 4 failures.

Manually Configuring Internet and WAN Settings 3-13

v1.0, September 2009