Simple Network Management Protocol (Snmp); Management Information Base - Symmetricom TimeProvider 5000 User Manual

Chapter 3

Simple Network Management Protocol (SNMP)

Simple Network Management Protocol (SNMP)
The Simple Network Management Protocol (SNMP) is an application layer protocol
that allows you to manage network devices. SNMP is based on a client-server
query-response mode that requires an Ethernet connection. A manager application
(software installed on a computer) is the client generating the queries, and an agent
(software on the TimeProvider 5000) is the server generating responses. The
TimeProvider 5000 SNMP supports most existing functions.
TimeProvider 5000 supports SNMPv2c and SNMPv3. SNMPv3 provides additional
security features not available in SNMPv2c. In addition to the functions of
SNMPv2c, SNMPv3 allows user and trapuser levels that are based on
authentication and privacy settings. The authentication algorithm is either
HMAC-SHA-1-96 or MD5, with a 20-character key. The privacy settings are based
on either the CBC-DES or AES encryption standard, with a 16-character key. All
keys are uppercase.
If SNMP is present, port 161 becomes the port of standard SNMP interactive
communications and port 162 becomes the trap port.
SNMP is an optional feature for the TP5000 that must be enabled to function. See
Provisioning for SNMP
Note: The SNMP feature can either be ordered in a new system, or
added to a previously ordered system as a field upgrade. Contact
your Symmetricom representative for more information.

Management Information Base

The Management Information Base (MIB) is a virtual database of managed objects,
their object identifiers, and variables. Typical MIB object identifiers include the
TimeProvider 5000, its modules, module features, input ports, output ports, etc. and
variables that include settings and measurements.
The MIB is controlled by the TimeProvider 5000's SNMP agent. The SNMP agent is
a server program that sends TimeProvider 5000 status (stored in the MIB database)
to the network manager when the manager transmits GET or GETNEXT messages.
The manager can also transmit SET messages that instruct the agent to set MIB
variables to new values. The TRAP message is used by the server to send the
manager indications of MIB occurrences, such as a fault condition.
The MIB data base is included on the CD included with the TP5000. A MIB browser
is required to view the MIB.
230 TimeProvider 5000 User's Guide
, on page 224 for details..
098-00028-003 Revision A – June, 2011