An alerting possible for a network device in hung state?

HI All,

Would like to know if there is any possibility to alert for a network device in hung state. As per my knowledge when the network device is in hung state, it is reachable or maybe in unknown state but not sure.

So need your help.

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mesverrum

pratikmehta003

Depends on the nature of what happened to cause it to be "hung"

Unless you have done some customizing in NPM if it is still answering pings it is going to show as being up, if not then it will show as down. You have the option to change nodes to get their status from SNMP if you prefer but that has more overhead. If a node shows as unknown it usually means the node has been removed from the database and you need to do some cleanup.

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pratikmehta003

Hmm so to keep in simple words, it's not possible right..!

And how abt monitoring the service of a load balancer? Is this Something

that can be done by using Pollers?

On 31-Mar-2016 3:31 am, "mesverrum" <

silverbacksays

Hey pratikmehta003

If a device supports SNMP, then it is possible that you can create a custom poller for any OID in the SolarWinds MIB database. As mesverrum correctly stated, if you device is responding to ICMP pings, then by default SolarWinds will report the device as 'UP', donated by a green pip next to it's name in the Orion Web Console.

To get anything other than UP/DOWN status from the device, and to create a custom poller to gather information other than compute and interface metrics, you will need to do the following:

Configure SNMP on the device, allowing the IP address of your Primary Polling Engine (commonly the main SolarWinds server, that also hosts the Orion website) to query the device.
In the device configuration, specify the SNMP community string that SolarWinds will need to use in order to authenticate with and successfully poll the device.
Add/Edit the device in SolarWinds, specifying the device IP address and SNMP configuration set up in the previous steps. This will then allow you to poll additional information such as CPU/Memory use, and provides the basis for custom poller communication.
Use the SNMPWalk.exe. tool (found inside your Orion install directory on your Primary Polling Engine) to 'walk' the MIB tree supported by the device, using the SNMP configuration from earlier. Save the resulting data to a location of your choice.
Examine the content of the file saved in step 4, locating the OID for the device value you want to monitor.
Create a custom poller, using the OID from step 5, and assign it to the device.

The steps above will help you get a custom poller created and assigned to your load balancer. If you need any further information or assistance, please let us know!

pratikmehta003

Hi silverbacksays

Thanks :-)

Yes that's the understanding i had for ping response for network device and it wont identify as 'hung' state.

I am aware of this Custom poller creation but Network team has given requirements related to service monitoring and all. I am checking on that as well. When i queried the MIB, i found values related to performance and others.

One more thing though, can we have an alert when the SNMP itself is not responding? I have seen in other tools but not sure about Solarwinds.

Can you help me with this?