Western Telematic AFS-16-1 Switch User Manual


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6-1
6. Ping-No-Answer Fallback Switching
The Ping-No-Answer function can be used to automatically switch one or more circuit
modules when an attached device fails to respond to a Ping Command. In addition,
the Ping-No-Answer function can also be configured to send an email, text message,
Syslog Message or SNMP Trap to notify you whenever a Ping-No-Answer Action occurs.
Please refer to Section 7.3 for instructions on setting up email alarm notification for
Ping-No-Answer Actions.
To set up a Ping-No-Answer Profile, access command mode using a password that
permits Administrator level commands and then proceed as follows:
• TextInterface: Type /PNA and press [Enter] to display the Ping-No-Answer
Directory menu. From the Ping-No-Answer Directory Menu, you can Add, Modify,
View or Delete Ping-No-Answer Profiles as described in the Sections that follow.
• WebBrowserInterface: Click on the "Ping-No-Answer Configuration" link on the
left hand side of the screen to display the Ping-No-Answer Directory menu. From
the Ping-No-Answer Directory menu, you can Add, Modify, View or Delete Ping-No-
Answer Profiles.
Note:AfterdefiningoreditingPing-No-Answerparameters,makecertain
tosavethechangesbeforeproceeding.IntheWebBrowserInterface,click
onthe"AddPingNoAnswer"buttontosaveparameters;intheTextInterface,
press[Esc]severaltimesuntiltheAFS-16displaysthe"SavingConfiguration"
messageandthecursorreturnstothecommandprompt.
6.1. Adding Ping-No-Answer Profiles
Up to 54 Ping-No-Answer Profiles can be defined. The Add Ping-No-Answer menu is
used to define the following parameters for each new Ping-No-Answer Profile:
• IPAddressorDomainName: The IP address or Domain Name for the device
that you wish to Ping. When the device at this address fails to respond to the Ping
command, the AFS-16 will switch the selected circuits. (Default = undefined.)
Note:Inordertousedomainnames,DNSServerparametersmustfirstbe
definedasdescribedinSection5.9.5.
• PingInterval: Determines how often the Ping command will be sent to the
selected IP Address. The Ping Interval can be any whole number, from 1 to 2,800
minutes. (Default = 15 Minutes.)
• IntervalAfterFailedPing: Determines how often the Ping command will be sent
after a previous Ping command receives no response. (Default = 1 Minute.)
• PingDelayAfterPNAAction: Determines how long the AFS-16 will wait to send
additional Ping commands, after Ping-No-Answer A/B switching has been initiated.
(Default = 15 Minutes.)
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