Hi Manish,
There are some previous threads that may help you out:
Cisco Switch Moniter through SCOM 2012 R2
The monitoring has not changed much between these versions for network devices.
You'll also find quite a lot of information from the Microsoft official documentation:
Monitoring networks by using Operations Manager
Under the above documentation you should find how to discover, configure and view network devices.
How to discover network devices in Operations Manager
How to configure monitoring of network devices
Viewing network devices and data in Operations Manager
Here's a list of the supported network devices for SCOM 2012 R2 and 2016:
System Center Operations Manager Network Devices Supported for Monitoring
You'll find some guides out there on the Internet by using your favorite search engine, here's a few:
SCOM SNMP Monitoring
SNMP Trap monitoring with SCOM 2012 R2
Best regards,
Leon
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