Additional Details can be found here

vCenter SNMP Configuration

SNMP configuration is required as part of CUCM Monitoring. SNMP can be configured as V1, V2, or V3 based on customer requirements.

You can configure up to four receivers to receive SNMP traps from vCenter Server. For each receiver, specify a host name, port, and community.

From vSphere Client, navigate to the vCenter Server instance.

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Select Configure tab

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Under Settings, select General

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Click Edit

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Select SNMP receivers

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Choose the Receiver Number that is going to be used for VSM,and enable it , In the example shown receiver 2 has been enabled

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Fill in the data as the below:

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Web Portal Configuration

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