Appendix C: SNMP
140 Express XL/XLT User Manual 61200070L1-1
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 XL/XLT 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
