Moxa Technologies EDS-405A User Manual download pdf (Page 35)

EDS-405A/408A Series User’s Manual Featured Functions

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User Auth. Type (for SNMP V1, V2c, V3 and V3 only)

Setting Description Factory Default

No-Auth

Use the admin or user account to access

objects. No authentication.

MD5-Auth

Provide authentication based on the

HMAC-MD5 algorithms. 8-character

passwords are the minimum requirement

for authentication.

SHA-Auth

Provide authentication based on the

HMAC-SHA algorithms. 8-character

passwords are the minimum requirement

for authentication.

User Data Encryption Key (for SNMP V1, V2c, V3 and V3 only)

Setting Description Factory Default

Enable

8-character data encryption key is the

minimum requirement for data encryption.

Maximum 30-character encryption key.

Disable No data encryption No

Trap Settings

SNMP traps allow an SNMP agent to notify the NMS of a significant event. The EDS-405A/408A

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. No acknowledgment is

sent back from the NMS so 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 receipt of the event. This

behavior is similar to that of the get and set requests. If the SNMP agent doesn’t receive a response

from the NMS for a period of time, the agent will resend the trap to the NMS agent. The maximum

timeout time is 300 secs (default is 1 sec), and the maximum number of retries is 99 times (default

is 1 time). When the SNMP agent receives acknowledgement from the NMS, it will stop resending

the inform messages.

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Moxa Technologies EDS-405A User Manual Page 35