Configuring the Switch
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3

Statistical Values

Table3-54. Displaying Port Statist ics
Parameter Description
Interface Statistics
Received Octets The total number of octets received on the interface, including framing
characters.
Received Unicast Packets The number of subnetwork-unicast packets deliver ed to a higher-layer
protocol.
Received Multicast Packets The number of packets, delivered by this sub-layer to a higher (sub-)lay er,
which were addressed to a multicast address at this sub-layer.
Received Broadcast Packets The number of packets, delivered by this sub-layer to a higher (sub-)layer,
which were addressed to a broadcast address at this sub-layer.
Received Discarded Packets The number of inbound packets which were chosen to be discarded even
though no errors had been detected to prevent their being d eliverable to a
higher-layer protocol. One possible reason for discarding such a packe t
could be to free up buffer space.
Received Unknown Packets The number of packets received via the interface which w ere discarded
because of an unknown or unsupported protocol.
Received Errors The number of inbound packets that contained errors preventing them
from being deliverable to a higher-layer protocol.
Transmit Octets The total number of octets transmitted out of the interface, inclu ding
framing characters.
Transmit Unicast Packets The total number of packets that higher-level protocols requested be
transmitted to a subnetwork-unicast address, including those that were
discarded or not sent.
Transmit Multicast Packets The total number of packets that higher -level protocols requested be
transmitted, and which were addressed to a multicast address at this
sub-layer, including those that were discarded or not sent.
Transmit Broadcast Packets The total number of packets that higher-level protocols requested b e
transmitted, and which were addressed to a broadcast address at this
sub-layer, including those that were discarded or not sent.
Transmit Discarded Packets The number of outbound p ackets which were chosen to be discarded even
though no errors had been detected to prevent their being transmitted.
One possible reason for discarding such a packet could be to free up
buffer space.
Transmit Errors The number of outbound p ackets that could not be transmitted because of
errors.
Etherlike Statistics
Alignment Errors The number of alignment errors (missynchroniz ed data packets).
Late Collisions The number of times that a collision is detected later t han 512 bit-times
into the transmission of a packet.
FCS Errors A count of frames received on a particular interface that are an integral
number of octets in length but do not pass th e FCS chec k. This count do es
not include frames received with frame-too-long or frame-too-short erro r.