CLI Reference Guide-R07

Chapter 11 | Interface Commands
Interface Configuration
– 369 –
Discard Input The number of inbound packets which were chosen to be discarded
even though no errors had been detected to prevent their being
deliverable to a higher-layer protocol. One possible reason for
discarding such a packet could be to free up buffer space.
Discard Output The number of outbound packets 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.
Error Input The number of inbound packets that contained errors preventing them
from being deliverable to a higher-layer protocol.
Extended IF Table Stats
Multicast Input The number of packets, delivered by this sub-layer to a higher (sub-
)layer, which were addressed to a multicast address at this sub-layer.
Multicast Output 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.
Broadcast Input 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.
Broadcast Output The total number of packets that higher-level protocols requested be
transmitted, and which were addressed to a broadcast address at this
sub-layer, including those that were discarded or not sent.
Etherlike Statistics
FCS Errors A count of frames received on a particular interface that are an integral
number of octets in length but do not pass the FCS check. This count
does not include frames received with frame-too-long or frame-too-
short error.
Single Collision Frames The number of successfully transmitted frames for which transmission
is inhibited by exactly one collision.
Multiple Collision Frames A count of successfully transmitted frames for which transmission is
inhibited by more than one collision.
Deferred Transmissions A count of frames for which the first transmission attempt on a
particular interface is delayed because the medium was busy.
Late Collisions The number of times that a collision is detected later than 512 bit-times
into the transmission of a packet.
Excessive Collisions A count of frames for which transmission on a particular interface fails
due to excessive collisions. This counter does not increment when the
interface is operating in full-duplex mode.
Internal MAC Transmit
Errors
A count of frames for which transmission on a particular interface fails
due to an internal MAC sublayer transmit error.
Frames Too Long A count of frames received on a particular interface that exceed the
maximum permitted frame size.
Table 72: show interfaces counters - display description (Continued)
Parameter Description