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Remote Monitoring (RMON) 641
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.
RMON-2 Groups 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
RMON-2 Group
Group
Number
Purpose
protocolDir 11 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.
protocolDist 12 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).
AddressMap 13 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
nlHost 14 Provides network-layer host statistics on the
amount of traffic going in and out of hosts
based on network-layer address
nlMatrix 15 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.
alHost 16 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