3-3

Viewing the Interface Group
Last Change
The Last Change field (bottom of the window) displays the date and the time
since the system was last reinitialized.
Viewing Statistics
The following statistics are collected from received and transmitted packets.
Unicast
The number of subnetwork unicast (sent to one station) packets received from a
higher-layer protocol, according to the ifInUcastPkts.
The number of subnetwork unicast (sent to one station) packets delivered to a
higher-layer protocol, according to the ifOutUcastPkts.
Multicast
The number of non-unicast (i.e., subnetwork-broadcast or subnetwork multi-cast)
packets received from a higher-layer protocol, according to the ifInNUcastPkts.
The number of non-unicast (i.e., subnetwork-broadcast or subnetwork multi-cast)
packets delivered to a higher-layer protocol, according to the ifOutNUcastPkts.
A multicast transmission is simultaneously sent to more than one station at a
time.
Discarded
The number of inbound packets which were chosen to be discarded even though
no errors had been detected to prevent their being transmitted, according to the
ifInDiscards.
The number of inbound or outbound packets which were chosen to be discarded
even though no errors had been detected to prevent their being deliverable,
according to the ifOutDiscards.
Discarding good packets indicates a very busy network (e.g. discarding packets to
free up buffer space). If a device routinely discards packets it usually indicates
that network traffic is overwhelming the device.
Error
The number of inbound packets that contained errors preventing them from
being delivered to a higher-layer protocol, according to the ifInErrors.
The number of outbound packets that could not be transmitted because of errors,
according to the ifOutErrors
NOTE
In accordance with Year 2000 compliance requirements, NetSight Element Manager
displays and allows you to set all dates with four-digit year values.