Overview

This event monitor connects to your Linux-based systems using SSH and collects bandwidth data. It can measure and record the incoming, outgoing, and total bandwidth rates. It also has filtering options that allow you to ignore selected interfaces that you do not want to monitor.

Use Cases

• Monitoring incoming, outgoing, and total bandwidth for your SSH/Linux devices
• Detecting systems that are using excessive bandwidth

Monitoring Options

This event monitor provides the following options:

Alert with [Info/Warning/Error/Critical] if the device cannot be contacted

Use this option to control whether or not you will be notified if the event monitor is unable to establish an SSH connection.

Alert if the incoming bandwidth on any interface exceeds a specified value

Use this option to set alerting thresholds based on the incoming bandwidth rate.

Alert if the outgoing bandwidth on any interface exceeds a specified value

This option alerts based on the outgoing bandwidth rate.

Alert if the total bandwidth on any interface exceeds a specified value

The total bandwidth rate is the sum of the incoming and outgoing rates. Use this option to set alerting thresholds based on the total rate.

Connect on port number

The default port for SSH connections is 22 but if your servers are using a non-standard port, you can specify it here.

Interfaces to ignore

Enter the names of the interfaces to ignore separated by commas (e.g. "Realtek, Marvell"). Note that interface names can be a partial match. To see the indexes, leave this field blank and run the event monitor once. Check the resulting event history record to get a list of interface names detected.

Authentication and Security

The account used for authentication must have interactive login rights via SSH. In addition, the account must have permission to run one of the following commands:

• cat /proc/net/dev
• netstat -b -i

Protocols

Data Points

This event monitor generates the following data points:

Data Point	Description
Incoming Bandwidth	The incoming bandwidth for a network device.
Outgoing Bandwidth	The outgoing bandwidth for a network device.
Total Bandwidth	The combined total bandwidth for a network device.

Sample Output

Tutorial

To view the tutorial for this event monitor, click here.