6. ETHERNET CONTROL
49
6.2
SNMP
By using SNMP (Simple Network Management Protocol), you can check the LT 4448 status
from an SNMP manager. Additionally, you can notify the SNMP managers of errors that the LT
4448 generates.
6.2.1
SNMP Version
The LT 4448 supports SNMPv2c.
6.2.2
Control Items
The following items on the LT 4448 can be controlled.
Table 6-1 SNMP controls
ACCESS
MODE
Check the LT 4448
status
Change the LT 4448
settings
Retrieve LT 4448
errors
SNMP
Yes (*1)
Yes
Yes
Yes
*1 SNMP ACCESS MODE is always set to on, but you need to configure the Ethernet settings (IP
address, subnet mask, gateway) for this to work. (If you set the IP address to 0.0.0.0, SNMP will not
work.) In addition, SNMP traps will not be transmitted unless the SNMP Manager IP is set.
6.2.3
SMI Definitions
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE, NOTIFICATION-TYPE, enterprises
FROM SNMPv2-SMI
DisplayString
FROM SNMPv2-TC
OBJECT-GROUP, MODULE-COMPLIANCE
FROM SNMPv2-CONF;
6.2.4
Notes on Updating
When the LT 4448 is being updated, the data in the system is overwritten. As such, the
operation of all input signals and output signals including SNMP is not guaranteed.
Check with your system administrator when updating the LT 4448.