Subject : Telecom Network Management

Topic : Internet Management

RMONI groups:

1) Statistic group

2) Packet capture group

1) Statistic group: The statistic group contains statistics measured by the probe for each monitored Ethernet interface on a device. The etherstats Table in this group has an entry for each interface. Data include statistics on packet types, sizes and errors. It also provides capability to gather statistics on the collision of the ethernet segment.

The number of collisions is a best element, as the number of collisions detected depends on where the probe is placed on the segment. The statistics group is used to measure live statistics on nodes and segments. commercial NMSs include features such as dynamic presentations of various traffic patterns. The number of MIB collisions could also be used alarm generation when it exceeds a set high threshold value.

2) Packet Capture Group:

This packet capture group is a post filter group. it captures packets from each channel based on the filter criteria of packet and channel filters in the filter group. The channel filter criteria for acceptance of the filter group output are controlled by the buffer control table and the captured channel data in the capture buffer table each packet captured is stored in the buffer as an instance.