13-1
13. Operation via SNMP
If SNMP Access Parameters have been defined as described in Section 6.8.5, then you
will be able to manage user accounts, control power and reboot switching and display
unit status via SNMP. This section describes the procedure for 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.
Note:
SNMP Commands are not available when the IPS mode is active.
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 in the user's guide archive on the WTI web site at:
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
lack of support for encryption of transmitted data. 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 or AES (in the case of the VMR/NPS, the default encryption
format for SNMPv3 is DES.) For the Password protocol, the SRM supports either MD5
or SHA1.
