3Com CoreBuilder 2500 User Manual - page 225
RMON Management Information Base (MIB)
15-11
A counter is a common type of MIB object used by RMON. A counter
object may record the number of frames that are transmitted onto the
network. The MIB may contain an entry for the counter object something
like the one in Figure 15-3.
Figure 15-3
Example of an RMON MIB Counter Object
The counter object information includes these items:
■
The name of the counter. In Figure 15-3, the counter is called
etherStatsPkts
(Ethernet, Statistics, Packets).
■
Access level. In Figure 15-3, access is read-only.
■
The number of the counter’s column in the table. In Figure 15-3, the
counter is in column 5 of the
etherStatsEntry
table.
The name of the table where the counter resides is
3CometherStatTable,
although this name does not appear in the display.
To manage a network, you do not need to know the contents of every
MIB object. Most network management applications, including Transcend
Enterprise Manager software, make the MIB transparent. However, by
knowing how different management features are derived from the MIB
you can better understand how to use the information they provide.
etherStatsPkts OBJECT-TYPE
SYNTAX
Counter
ACCESS
read-only
STATUS
mandatory
DESCRIPTION
This is a total number of packets
received, including bad packets,
broadcast packets, and multicast
packets.
::= { etherStatsEntry 5 }