A Device Availability monitor checks whether a device is responding to an ICMP ECHO request in less than 3000 milliseconds and lets you know whether the device is up or down.
ICMP Ping checks a remote host for availability. Devices normally respond to ping requests within milliseconds. However, on a very congested network it may take up to three seconds or longer to receive an echo packet from the remote host.
The availability of a device is always monitored.
What You Can Do
Since device availability is always monitored, you can
- set the alert notification options for a device that is down
set how long Service Center should wait before alerting you that a device is down
To set the alert notification and how long Service Center should wait before alerting that a device is down
- In Service Center, click Configuration > Monitor & Alert Rules.
- From the Site list, select the site where the device is located.
- From the Device list, select the device to which you want to add a monitor.
- Click Add Monitor.
- From the Choose Monitor Type list, select Device Availability.
- Click Add Monitor.
- In the Monitor tab, type a title for the monitor.
- Optionally, type a description for the monitor.
- Click Alerts.
- Click Add.
- Type a title for the alert.
- Optionally, type a description for the alert.
- Click Add Alert Rule.
- From the Trigger Alert When Device is Down For list, select the length of time Service Center should wait before alerting you.
- Click Save.
- Do one of the following:
- To send an email, see Setting Alert Actions.
- To create a trouble ticket, see Setting an Alert to Create a Trouble Ticket.
- To self-heal, see Setting an Alert to Self-heal.
- To run a script, see Setting an Alert to Run a Script.
- To escalate the alert, see Escalating an Alert.
- Click Save.