Comtech EF Data VMS v3.12.x Vipersat - Manual (Page 456)

Summary MN/22156, rev 12
D-6 VMS User Guide
Summary
You should keep in mind the following characteristics of an SNMP Trap.
• SNMP is not a “reliable” transport protocol. If the Trap message is lost
due to network issues (congestion, noise, delays, etc.), the SNMP protocol
will NOT retransmit the lost trap message.
• SNMP (v1&v2) is not a secure protocol. It is not difficult to eavesdrop or
spoof messages. Isolating SNMP traffic from end-user channel is
recommended.
• VMS will generate a trap message for each destination entered. Entering
10 trap destinations, for example, will generate 10 trap messages for each
event.
• Only a VMS server in Active mode will generate trap messages. A
redundant VMS server in stand-by mode will not generate or send a trap
message until it is switched to Active mode for example the Primary
server failure is detected.
• At this time there is no VMS SNMP agent in VMS. An SNMP Manager
cannot poll VMS for status or configuration detail information.
• Current trap uses SNMP v1.