ADTRAN Express 6100, Руководство пользователя

Страница: 128 / 161

Appendix C. SNMP
C-2 Express 6100/6120 User Manual 61200176L1-1
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.