SLM-5650B Satellite Modem
Revision 2
Ethernet-Based Management 6–6 MN-SLM-5650B
6.4.2 SNMP Community Strings
In SNMP v1/v2c, the SNMP 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.
The SLM-5650B uses Community Strings as a password scheme that provides authentication
before gaining access to the modem agent’s MIBs. They are used to authenticate users and
determine access privileges to the SNMP agent.
Type the SNMP Community String into the user-supplied MIB Browser or Network Node
Management software.
The user defines three Community Strings for SNMP access:
• Read Community default = public
• Write Community default = private
• Trap Community default = comtech
Note: Maximum number of characters for community strings shall not exceed 20. All printable
ASCII characters, except ’\’ and ‘~’ are allowed. No trailing spaces for community strings.
For proper SNMP operation, the SLM-5650B MIB files must be used with the
associated version of the SLM-5650B base modem M&C. Please refer to the
SLM-5650B SW Release Notes for information on the required FW/SW
compatibility.
6.4.3 SNMP Traps
These include unit faults, TX faults, and RX faults. A trap is sent both when a fault occurs and is
cleared.
The “Traps” file only needs to be compiled if SNMPv1 traps are to be used. Which style of traps
the modem sends can be configured by the user using the slm5650SNMPTrapVersion OID.
The modem supports the following MIB2 SNMPv1traps / SNMPv2 notifications:
MIB2 SNMPv1 trap: Authentication Failure
MIB2 SNMPv2 notifications: Authentication Failure
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