Rockwell Automation 1785-ENET USER MANUAL PLC-5 ETHERNET INTERFACE - Manual (Page 45)

1785-6.5.19 November 1998
Appendix
C
SNMP Management Information Base
(MIB) II Data Groups
Simple Network Management Protocol (SNMP) specifies the
diagnostic data that a host computer must maintain for a network
management software to access. Hosts typically keep statistics on the
status of their network interfaces, incoming and outgoing traffic,
dropped datagrams, and error messages generated. Network
management protocols let network management software access
these statistics.
MIB II is the SNMP standard for the management of network data.
The following tables list the MIB II data items and their definitions.
Group: MIB: Description:
System sysDescr description of device
sysObjectID identity of agent software
sysUpTime how long ago the agent started
sysName device name
sysServices services offered by the device
Interfaces ifIndex interface number
ifDescr description of the interface
ifType type of interface
ifMTU MTU size
ifSpeed transmission rate in bits/second
ifPhysAddress media specific address
ifAdminStatus desired interace state
ifOperStatus current interface state
ifLastChange how long ago interface changes state
ifInOctets total octets received from the data
ifUcasPackets broadcast/multicast packets delivered above
ifInDiscards packets discarded due to resource limitations
ifInErrors packets discarded due to format
ifUnknownProtos packets destined for unknown protocols