Appendix C. SNMP
C-2 Express 4110/4120 User Manual 61200176L3-1
response to the network manager. The network manager 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.
•Tra p: This is an unsolicited me ssa ge issued by a network device to
report an operational anomaly or an alarm condi t ion to the network
manager.
These messages are typically encased within informational packets and
transported over the LAN or WAN.
SNMP Embedded Agent
The Express 4110/4120 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