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 XL/XLT supports the following groups from
•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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