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CDM-740 Advanced Satellite Modem
Ethernet Management
6.3.1 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. A MIB file is a tree of
nodes that is unique to a particular device.
The following MIB files are associated with the CDM-740:
MIB File/Name
FW10874-2-.mib
ComtechEFData
Root MIB file
FW-0000287- .mib
CDM-740 MIB file
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".
6.3.2 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.
The user defines two Community Strings for SNMP access:
•
•
Description
ComtechEFData MIB file gives the root tree for ALL Comtech EF Data products
and consists of only the following OID:
Name: comtechEFData
Type: MODULE-IDENTITY
OID: 1.3.6.1.4.1.6247
Full
path: iso(1).org(3).dod(6).internet(1).private(4).enterprises(1).comtechEFData(
6247)
Module: ComtechEFData
MIB file consists of all of the OID's for management of the modem functions
Read Community
Write Community
default = public
default = private
6–2
Revision 0
MN-CDM740
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