SNMP Trap not shown in SCOM-Console

Question

Hello!

I am using SCOM 2019 for receiving Traps from Network Devices.

I have installed it like https://kevinholman.com/2015/02/03/snmp-trap-monitoring-with-scom-2012-r2/

The Host receiving the traps is installed correctly

netstat -ano | findstr "162"  
  UDP    0.0.0.0:162            *:*                                    6400  
  UDP    [::]:162               *:*                                    6400  
  
  
tasklist /fi "PID eq 6400"  
  
Image Name                     PID Session Name        Session#    Mem Usage  
========================= ======== ================ =========== ============  
MonitoringHost.exe            6400 Services                   0    279 080 K  

SNMP Service is not running. --> should i deinstall it?

In Wireshark I see that the Traps are received.

But in SCOM console I don't see the Events.

I have read a lot of articles, but I don't know where the problem is.

Firewall is open

I have two server in the network resourcepool. on each server is running a discovery for network devices.

my problem is, that i sometimes receive traps.

rg
Hansi

Answer 1

Hi @Hansi ,

the cause could be that your resource pool contains two members. Are those 2x management servers both configured according to the article?
If not then this can explain why you sometimes receive traps and sometimes not.
Can you please try with only one server as Kevin suggests:

Next, I create a network monitoring resource pool in SCOM. I want to lock down which management server I will use to receive traps, and to lock this to a single management server for any troubleshooting.

How does it look then? Do you get them?

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(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)
Regards
Stoyan Chalakov

Answer 2

Hello @Hansi

Thank you for your heads up.

I would like to provide the next post which seems very similar for what you were describing previously.... So please direct yourself down below:

https://learn.microsoft.com/en-us/answers/questions/300806/no-snmp-trap-events.html

I hope you can find this useful to overcome your concern.

Looking forward to your feedback,

Cheers,

Please "Accept the answer" if the information helped you. This will help us and others in the community as well.

Answer 3

Only one server in a resource pool is active at any given time, which means that if you're sending traps to only one of the servers they will show up in SCOM console only when that server is active.
So you have two options : send the traps to both servers (if your snmp devices support sending traps to multiple servers) or, as Stoyan mentioned, use a single server in the resource pool.

Answer 4

Hello!

OK the Problem are the two Servers in Resourcepool.

So I have a Problem now. For High Availability for active montitoring with snmp-get need two Servers in Resourcepool

So I have two Discoveries. One for Server1 the other for Server2. But both Discoveries have the same ResourcePool for active monitoring.

here are the discovered objects:

So I have to send the traps to each SCOM-Server in Resourcepool.

But is their a possibility to find out the active SCOM-Server listening for traps.?

rg
Hansi

Answer 5

Hi,

this can help you out:

How can we tell which server is the active resource pool member?
https://www.catapultsystems.com/blogs/how-can-we-tell-which-server-is-the-active-resource-pool-member/

You need to separte the two requirements - SNMP monitrong of devices (SNMP Get), where you need a ressource pool and SNMP trap monitoring where you get the traps sent to your management server.
In case of SNMP traps You will need one dioscvery rule, run by one management server and pon this same management server you need to complete all configurations listed by Kevin!

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(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)
Regards
Stoyan Chalakov