ZyXEL Communications ZyXEL ES-4024A Support Notes page 116

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 Function
MIB
Group
Statistics Contains statistics
measured by the
probe for each
monitored interface
on this device.
History Records periodic
statistical samples
from a network and
stores for retrieval.
Alarm Periodically takes
statistical samples
and compares them
with set thresholds for
events generation.
Host Contains statistics
associated with each
host discovered on
the network.
HostTopN Prepares tables that
describe the top
hosts.
All contents copyright (c) 2006 ZyXEL Communications Corporation.
ES-4024A Series Switch Support Notes
Elements
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.
Sample period, number of samples,
items sampled.
Includes the alarm table and requires
the implementation of the event group.
Alarm type, interval, starting threshold,
stop threshold.
Host address, packets, and bytes
received and transmitted, as well as
broadcast, multicast, and error packets.
Statistics, host(s), sample start and
stop periods, rate base, duration.
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