CLI Guide

Layer 2 Switching Commands 418
Example
The following example displays traffic seen by the Ethernet interface:
console>show interfaces counters
Port InTotalPkts InUcastPkts InMcastPkts InBcastPkts
--------- ---------------- ---------------- ---------------- ---------------
-
Gi1/0/1 0 0 0 0
Gi1/0/2 0 0 0 0
FCS-Err Frame Check Sequence errors—FCS errors are the count of
packets received which did not have a valid CRC. See
RFC1271 etherStatsCRCAlignErrors for further
information. This indicates a physical impairment. Possible
causes include bad cables, not fully inserted cables, failed
transceivers, or incompatible settings (peers do not have
compatible settings).
Xmit-Err Total transmit errors—Transmit errors are the count of
packets queued for transmit but had an error during
transmission, such as jabber, FCS, fragment, or late
collision.
These errors may be seen in 10/100m legacy operation.
Jabber, fragment and late collision are 10/100m specific
errors.
Rcv-Err Total packets received with MAC errors—Receive errors is
the count of packets received with a MAC error. This
indicate a physical layer issue between the MAC and PHY
or transceiver as the PHY should discard malformed
packets.
UnderSize Fragments/undersize packets received—
Fragments/undersize is the count of packets received which
are less than 64 octets in length. Fragments are an artifact
of 10/100m shared media operation. These should never be
seen on 1G and higher speed media.
OutDiscard Total transmit packets discarded—Transmit discards are
the count of packets discarded while queued/queuing for
transmit for any reason.
Counters Description