Event Group; Rmon-2 Groups - 3Com 4007 Implementation Manual

RMON-2 Groups

Event Group

The event group logs alarms or traps network event descriptions.
Although alarm group thresholds trigger most events, other RMON
groups may define event conditions.
The system software supports seven RMON-2 groups defined by the IETF
in RFC 2021 and one object from the probe configuration group.
Table 100 briefly describes these groups.
The RMON-2 groups are supported on Multilayer Switching Modules
only.
Table 100 RMON-2 Groups Supported in the System
Group
RMON-2 Group Number
protocolDir 11
protocolDist 12
AddressMap 13
nlHost 14
nlMatrix 15
alHost 16
Remote Monitoring (RMON)
Purpose
Provides a list of all protocols that the probe
can interpret (protocols for which the probe
can decode and count packets). The
protocols can be different network layer,
transport layer, and higher layer protocols.
This group allows the addition, deletion, and
configuration of entries in the list.
Maintains a table of aggregate statistics on
the amount of traffic that each protocol
generates per LAN segment (not for each
host or application running on each host).
Maintains a table that maps each network
address to a specific MAC address and port
on an attached device and the physical
address on the subnetwork
Provides network-layer host statistics on the
amount of traffic going in and out of hosts
based on network-layer address
A network-layer matrix that provides
statistics on the amount of traffic between
source/destination pairs of hosts based on
network-layer address. It also maintains a
TopN table to rank pairs of hosts based on
the number of octets or number of packets
sent between pairs of hosts.
Traffic statistics to and from each host by
application layer. Same as nlHost except that
traffic broken down by protocols can be
recognized by ProtocolDir
641