(Revised 2013-23-10)
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Ping WatchDog
The ping watchdog sets the N-Tron 702-W Device to continuously ping a user defined IP address (for
example the Internet gateway). If it is unable to ping under the user defined constraints, the N-Tron 702-W
device will automatically reboot. This option decreases the likelihood of failure using a relative "fail-proof"
mechanism.
Ping Watchdog is dedicated for continuous monitoring of a particular connection to a remote host using the
Ping tool. Ping works by sending ICMP “echo request” packets to the target host and listening for ICMP
“echo response” replies. If the defined number of replies is not received, the tool reboots the device.
Enable Ping Watchdog
: control will enable the Ping Watchdog Tool.
IP Address To Ping
: specify an IP address of the target host which will be monitored by the Ping
Watchdog Tool.
Ping Interval
: specify a time interval (in seconds) between the ICMP “echo requests” sent by the
Ping Watchdog Tool.
Startup Delay
: specify initial time delay (in seconds) until the first ICMP “echo requests” are sent
by the Ping Watchdog Tool. The value of the Startup Delay should be at least 60 seconds as the
network interface and wireless connection initialization takes a considerable amount of time if the
device is rebooted.
Failure Count To Reboot
: specify the number of ICMP “echo response” replies. If the specified
number of ICMP “echo response” packets is not received continuously, the Ping Watchdog Tool will
reboot the device.
SNMP Agent
Simple Network Monitor Protocol (SNMP) is used in network management systems to monitor network-
attached devices for conditions that warrant administrative attention. The N-Tron 702-W contains an SNMP
agent which allows it to communicate to SNMP managed applications for network provisioning.
The SNMP Agent provides an interface for device monitoring using the Simple Network Management
Protocol (an application layer protocol that facilitates the exchange of management information between
network devices). The SNMP Agent allows network administrators to monitor network performance, find
and troubleshoot network problems. For the purpose of equipment identification, it is always a good idea to
configure SNMP agents with contact and location information:
Enable SNMP Agent
: control will enable the SNMP Agent.
SNMP Community
: specify SNMP community string. It is required to authenticate access to MIB
objects and functions as embedded password. The device supports a Read-only community string
that gives read access to authorized management stations of all objects in the MIB except
community strings, write access is not allowed.
Contact
: specify the identity or the contact for notification of emergency situations.
Location
: specify the physical location of the device.
