User`s manual

PT-G7509 User’s Manual Featured Functions
3-22
User Data Encryption Key (for SNMP V1, V2c, V3 and V3 only)
Setting Description Factory Default
Enable
Enables data encryption using the specified
data encryption key (between 8 and 30
characters).
No
Disable No data encryption No
Trap Settings
SNMP traps allow an SNMP agent to notify the NMS of a significant event. The PT-G7509
supports two SNMP modes, Trap mode and Inform mode.
SNMP Trap Mode
In Trap mode, the SNMP agent sends an SNMPv1 trap PDU to the NMS. An acknowledgment is
not sent back from the NMS, which means that the agent has no way of knowing if the trap
reached the NMS.
SNMP Inform Mode
SNMPv2 provides an inform mechanism. When an inform message is sent from the SNMP agent
to the NMS, the receiver sends a response to the sender acknowledging that the event was received.
This behavior is similar to get and set requests. If the SNMP agent does not receive a response
from the NMS for a period of time, the agent will resend the trap to the NMS agent. The maximum
timeout is 300 sec. (default is 1 sec.), and the maximum number of retries is 99 (default is 1 time).
When the SNMP agent receives acknowledgement from the NMS, it will stop resending the
inform messages.