User`s guide
Table Of Contents
- Figure 2.1: VMR Series - Front Panel (Model VMR-16HD20-1 Shown)
- Figure 2.2: VMR Series - Back Panel (Model VMR-16HD20-1 Shown)
- Figure 2.3: NPS Series - Front Panel (Model NPS-16HD20-1 Shown)
- Figure 2.4: NPS Series - Back Panel (Model NPS-16HD20-1 Shown)
- Figure 5.1: Boot Priority Example 1
- Figure 5.2: Boot Priority Example 2
- Figure 9.1: The Help Menu (Administrator Mode; Text Interface - VMR Shown)
- Figure 14.1: Web Access Parameters (Text Interface Only)
- Figure B.1: RS232 SetUp Port Interface
- 1. Introduction
- 2. Unit Description
- 3. Getting Started
- 4. Hardware Installation
- 5. Basic Configuration
- 5.1. Communicating with the VMR or NPS Unit
- 5.2. Configuration Menus
- 5.3. Defining System Parameters
- 5.4. User Accounts
- 5.5. Managing User Accounts
- 5.6. The Plug Group Directory
- 5.7. Defining Plug Parameters
- 5.8. Serial Port Configuration
- 5.9. Network Configuration
- 5.10. Save User Selected Parameters
- 6. Reboot Options
- 7. Alarm Configuration
- 8. The Status Screens
- 9. Operation
- 10. SSH Encryption
- 11. Syslog Messages
- 12. SNMP Traps
- 13. Operation via SNMP
- 14. Setting Up SSL Encryption
- 15. Saving and Restoring Configuration Parameters
- 16. Upgrading VMR/NPS Firmware
- 17. Command Reference Guide
- Appendix A. Specifications
- Appendix B. Interface Descriptions
- Appendix C. Customer Service
- Index
13-1
13. Operation via SNMP
If SNMP Access Parameters have been defined as described in Section 5.9.6, then you
will be able to manage user accounts, control power and reboot switching and display
unit status via SNMP. This section describes SNMP communication with the VMR/
NPS unit, and lists some common commands that can be employed to manage users,
control switching and reboot actions and display unit status.
13.1. VMR/NPS SNMP Agent
The VMR/NPS’s SNMP Agent supports various configuration, control, status and event
notification capabilities. Managed objects are described in WTI-MPC-VMR-MIB.txt,
which can be found on the CDROM included with the VMR/NPS unit, or in the user's
guide archive on the WTI web site (http://www.wti.com/manuals.htm).
The WTI-MPC-VMR-MIB.txt document can be compiled for use with your SNMP client.
13.2. SNMPv3 Authentication and Encryption
The major limitations of SNMPv2 were the failure to include proper username/password
login credentials (v2 only used a password type of login, i.e., community name) and the
exclusion of encryption for data moving over the internet. SNMPv3 addresses both of
these shortcomings.
For SNMPv3, the VMR/NPS supports two forms of Authentication/Privacy: Auth/noPriv
which requires a username/password, but does not encrypt data going over the internet
and Auth/Priv which requires a username/password AND encrypts the data going over
the internet using DES (AES is not supported at this time). For the Password protocol,
the VMR/NPS supports either MD5 or SHA1.