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Network Monitoring Tools

Network Monitoring Tools

What is your first reaction on a network fault? A direct login to the device is not a recommended approach to start troubleshooting an alert. Providing an access to every team member for all the devices in the network has associated risks and is an option that does not scale in expanding teams. That said, you would like the team to be equipped with the required utilities that lets them quickly troubleshoot the network performance problems. Instant accesses to the network troubleshooting tools help isolate a fault quickly and embark on the actions needed to resolve a fault as early as possible.

Here is collection of OpManager's network monitoring tools that helps perform the first and second level troubleshooting based on the nature of the network fault.

ICMP Ping

When you receive a 'device down' alert, the first condition that you might want to assess is if the device is reachable. From the device snapshot page in OpManager, do an instant ping and check for response. You can troubleshoot further using the other network monitoring tools if a ping to the device fails, or if the response time is very high.

Network Monitoring Tools - Ping

Traceroute

When you troubleshoot a device down alert using Ping and the device fails to respond, you can Traceroute to determine if the device is not reachable because of a failure in the path. Trace the route from OpManager to the destination device, check the number of hops to the monitored device and spot the exact point of delay or outage. Again, this serves as a first level troubleshooting and based on the response, you can switch to other monitoring tools to drill down a fault.

Network Monitoring Tools - TraceRoute

Switch Port Mapper

This tool helps you see the port-wise connectivity of devices to the network switches which is necessary to help troubleshoot high traffic issues. The Switch Port Mapper is a network monitoring tool that gives you the MAC address, IP Address and DNS names of the devices connected to the switch.

Network Monitoring Tools : Switch Port Mapper

Real Time Graphs

When there is high system resource utilization, an instant check on the current resource performance helps in assessing how severe the performance impact is. An unattended resource crunch can lead to severe downtimes. Let's assume you receive a threshold violation alert for memory utilization on a critical server. The first step would be to determine if it is a transient spike or it has been that way for some time. OpManager's Real time network monitoring tool comes handy in such cases. The administrator can instantly access and resolve them quickly.

Network Monitoring Tools : Realtime Graphs

Remote Process Diagnostics

This network monitoring tool is very specific to server performance monitoring. Use this tool to launch the list of Top 10 processes by CPU or Memory utilization from the device snapshot page. This option lets you terminate the offending process immediately and avert a server crash.

SNMP MibBrowser

The MIB Browser tool is a complete SNMP MIB Browser that enables loading and browsing MIBs and allows you to perform all SNMP-related operations. You can also view, operate, and set the data available through the SNMP agent running on a managed device. The in-built trap viewer lets you view all the incoming traps including the devices that are not managed in OpManager. The MibBrowser is a comprehensive network monitoring tool to troubleshoot all SNMP related monitoring issues.

Troubleshooting SNMP

Check out this article for steps to troubleshoot an SNMP monitor.

Syslog Viewer

The Syslog Viewer in OpManager lets you view the syslog packets sent by the devices to the OpManager server. This network tool helps an administrator find out if the monitored devices are correctly forwarding the messages to the configured syslog server (OpManager server in this case). You can choose to monitor specific syslog messages by configuring syslog monitoring rules by filtering the rules that match specific criteria.

Network Monitoring Tools: Syslog Receiver

Telnet/SSH

Establish a CLI session with the Unix devices to troubleshoot quickly. You might want to execute some CLI commands on the device to check what is causing a high CPU utilization on the device and decide to terminate a process or kill a service to free-up the resource. This tool serves as a first and second level troubleshooting utility as it lets you act immediately on certain alerts using CLI commands.

Network Monitoring Tools: Telnet/SSH

Remote Desktop Connection

Similar to CLI sessions for the Unix-based devices, you can authenticate to remote Windows devices from OpManager using the Remote Desktop Connection tool and perform the allowed operations on the device.

Browse

Yet another option to check if a device is reachable- a quick way to know if a device, your web-server for instance, and is responding to a http/https request. The new generation network devices come with a built-in GUI to telnet to the devices. You can connect to the GUI using the http/https access.

SmartPhone GUI

Access your OpManager anytime from anywhere using the new SmartPhone GUI. This lets you visualize your infrastructure, act on the alerts, drill-down to the root cause of the problem without having to be physically present in your server room to resolve a fault! Here is a short video on the network monitoring tasks this tool can perform.

Network Monitoring Tools: SmartPhone GUI

Video Zone
OpManager Customer Videos
Todd Haverstock - Administrative Director (Blessing Hospital)
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     Beverley Seche ManageEngine Customer
  •  Michael - Network & Tech, ManageEngine Customer
     Jesse Gusmao ManageEngine Customer
  •  David Tremont, Associate Directory of Infrastructure,USA
     Todd Haverstock Administrative Director