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Appendix C: SNMP
Using SNMP Version 1, the network manager can issue three types of com-
mands:
•
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 GetRe-
quest 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 trans-
ported over the LAN or WAN.
SNMP Embedded Agent
The Express L768/L1.5 supports the following groups from MIB-II: (RFC
1213)
•
System Group
•
UDP Group
•
Interfaces Group
•
ICMP Group
•
Address Translation Group
•
IP Group
•
TCP Group
Also, the Ethernet transmission MIB is supported (RFC 1643).
The following manager requests are supported:
•
Get object
•
Get next object
•
Set object
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Express L768/L1.5 User Manual
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