ES-3100 Series Switch Support Notes
All contents copyright (c) 2006 ZyXEL Communications Corporation.
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requirements. Each group is optional so that vendors do not need to support all
the groups within the Management Information Base (MIB). Some RMON
groups require support of other RMON groups to function properly. Table 1
summarizes the nine monitoring groups specified in the RFC 1757 Ethernet
RMON MIB.
Table 1: RMON Monitoring Groups
RMON 1
MIB
Group
Function Elements
Statistics Contains statistics
measured by the
probe for each
monitored interface
on this device.
Packets dropped, packets sent, bytes
sent (octets), broadcast packets,
multicast packets, CRC errors, runts,
giants, fragments, jabbers, collisions,
and counters for packets ranging from
64 to 128, 128 to 256, 256 to 512, 512
to 1024, and 1024 to 1518 bytes.
History Records periodic
statistical samples
from a network and
stores for retrieval.
Sample period, number of samples,
items sampled.
Alarm Periodically takes
statistical samples
and compares them
with set thresholds for
events generation.
Includes the alarm table and requires
the implementation of the event group.
Alarm type, interval, starting threshold,
stop threshold.
Host Contains statistics
associated with each
host discovered on
the network.
Host address, packets, and bytes
received and transmitted, as well as
broadcast, multicast, and error packets.
HostTopN Prepares tables that
describe the top
hosts.
Statistics, host(s), sample start and
stop periods, rate base, duration.
