ADTRAN Express L128FP, User Manual

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Appendix C. SNMP
C-2 Express L128FP User Manual 61202070L4-20
er collects all the data from the various network devices and presents
it in a consistent form.
Using SNMP Version 1, the network manager can issue three types of
commands:
• GetRequest : This command retrieves a single item or the first in
a series from a network device.
• GetNextRequest : This command retrieves the next item in a
series from a network device.
• SetRequest : This command writes information to a network
device.
The network device issues two types of messages:
• GetResponse : This message is the response to a network
manager GetRequest or GetNextRequest command.
• Trap : This is an unsolicited message issued by a network device
to report an operational anomaly or an alarm condition to the
network manager.
These messages are typically encased within informational packets
and transported over the LAN or WAN.