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Copyright @ 2012 Pepwave
Health Check Settings
Method
This setting specifies the health check method for the WAN connection. The value of
Method can be configured as Disabled, Ping or DNS Lookup. The default method is DNS
Lookup.
For Mobile Internet connection, the value of Method can be configured as Disabled or
SmartCheck.
Health Check Disabled
When Disabled is chosen in the Method field, the WAN connection will always be considered as up. The connection
will not be treated as down in the event of IP routing errors.
Health Check Method: PING
The ICMP PING packets will be issued to test the connectivity with a configurable target IP address or host name. A
WAN connection is considered as up if PING responses are received from either one or both of the PING Hosts.
PING Hosts
This setting specifies IP addresses or host names with which connectivity is to be tested via
ICMP Ping.
If Use first two DNS servers as Ping Hosts is checked, the target PING Host will be the
first DNS server for the corresponding WAN connection.
Reliable PING hosts with a high uptime should be considered.
By default, the first two DNS servers of the WAN connection are used as the PING Hosts.
Health Check Method: DNS Lookup
DNS lookups will be issued to test the connectivity with target DNS servers. The connection will be treated as up if
DNS responses are received from either one or both of the servers, regardless of whether the result was positive or
negative.
Health Check DNS
Servers
This field allows you to specify two DNS hosts’ IP address with which connectivity is to be
tested via DNS Lookup.
If Use first two DNS servers as Health Check DNS Servers is checked, the first two DNS
servers will be the DNS lookup targets for checking a connection's health. If the box is not
checked, field Host 1 must be filled and field Host 2 is optional.
If the box Include public DNS servers is selected and no response is received from all
specified DNS servers, DNS lookups will also be issued to some public DNS servers. A