# Installation summary

NMS SNMP software components fully support SNMP version 1 but do not fully support SNMP version 2. For example, the get-bulk command is not fully supported and SNMP traps are generated in version 1 format. NMS recommends that you use SNMP request version 1 when accessing NMS subagents.

## Supported operating systems

NMS SNMP software is available for the following operating systems:

- Windows

- UNIX

- Red Hat Linux

## Installation and configuration overview

The following table provides an overview of the steps required to install and configure NMS SNMP:

Step | Action
1 | Install the SNMP master agent under UNIX or under Windows. By default, the master agent communicates with the network using UDP port 161. The following illustration shows installing the SNMP master agent:
2 | Install the NMS subagents and multiplexer (mux) as shown in the following illustration:
3 | To set up the NMS multiplexer between the network and the SNMP master agent, configure the master agent so one of its UDP ports matches the NMS multiplexer. By default, the NMS multiplexer's secondary port is port 49212. The following illustration shows configuring the SNMP master agent UDP port:
4 | Start up the SNMP master agent, NMS multiplexer, and subagents.
5 | To include a third-party multiplexer, set it up between the network and the NMS multiplexer, and configure the ports accordingly. The following illustration shows configuring a third-part multiplexer: Note: In all cases, all ports must be unique, and the UDP port connecting to the network must be port 161.