Product specifications

CDD-562L/564 Demodulator with IP Module Revision 1
Ethernet Management MN/CDD564L.IOM
7–3
7.4 SNMP Interface
The Simple Network Management Protocol (SNMP) is an application-layer protocol designed to
facilitate the exchange of management information between network devices. The demodulator
SNMP agent supports both SNMPv1 and v2c.
IMPORTANT
For proper SNMP operation, the demodulator MIB files must be used with the
associated version of the demodulator firmware. Please refer to the CDD-562L/
564/564L FW Release Notes for information on the required FW/SW compatibility.
7.4.1 Management Information Base (MIB) Files
MIB files are used for SNMP remote management and consist of Object Identifiers (OIDs). Each
OID is a node that provides remote management of a particular function. An MIB file is a tree of
nodes that is unique to a particular device.
There are three MIB files are associated with the CDD-56X Demodulator:
MIB File/Name Description
FW11669-2-.mib
ComtechEFData MIB file
ComtechEFData MIB file gives the root tree for ALL Comtech EF Data
products and consists of only the following OID:
Name: comtechEFData
OID: 1.3.6.1.4.1.6247
Path: iso(1).org(3).dod(6).internet(1).private(4).enterprises(1).comtechEFD
ata(6247)
FW11669-3D.mib
MIB file
CDD-564 MIB file consists of all of the OID’s for management of the
demodulators functions.
FW11669-4-.mib
Traps MIB file
CDD-564 Traps MIB file is provided for SNMPv1 traps.
These MIB files should be compiled in a MIB Browser or SNMP Network Monitoring System server.
Note: The SNMP agent supports both SNMPv1 and v2c. The Traps file needs to be compiled only if
SNMPv1 traps are to be used.
IMPORTANT
Any changes made to the IP Parameters will be lost if the demodulator is reset
or loses power unless the changes are saved to permanent storage. The IP
Parameters can be saved by a SET of the cdd564SaveParamToFlash OID
within the MIB.
7.4.2 SNMP Community Strings
The modem uses community strings as a password scheme that provides authentication before
gaining access to the modem agent’s MIBs.
In “SNMP v1/v2c”, the community string is sent unencrypted in the SNMP packets. Caution
must be taken by the network administrator to ensure that SNMP packets travel only over a
secure and private network if security is a concern. A packet sniffer can easily obtain the
community string by viewing the SNMP traffic on the network.
The community string is entered into the MIB Browser or Network Node Management software
and is used to authenticate users and determine access privileges to the SNMP agent.