show interface ethernet

This command displays detailed statistics for a specific interface or for all CPU traffic based upon the argument.

Format show interface ethernet {unit/slot/port | switchport | all}
Mode Privileged EXEC

When you specify a value for unit/slot/port, the command displays the following information.

Column
Meaning
Packets Received
  • Total Packets Received (Octets) - The total number of octets of data (including those in bad packets) received on the network (excluding framing bits but including Frame Check Sequence (FCS) octets). This object can be used as a reasonable estimate of Ethernet utilization. If greater precision is desired, the etherStatsPkts and etherStatsOctets objects should be sampled before and after a common interval. The result of this equation is the value Utilization which is the percent utilization of the Ethernet segment on a scale of 0 to 100 percent.
  • Packets Received 64 Octets - The total number of packets (including bad packets) received that were 64 octets in length (excluding framing bits but including FCS octets).
  • Packets Received 65–127 Octets - The total number of packets (including bad packets) received that were between 65 and 127 octets in length inclusive (excluding framing bits but including FCS octets).
  • Packets Received 128–255 Octets - The total number of packets (including bad packets) received that were between 128 and 255 octets in length inclusive (excluding framing bits but including FCS octets).
  • Packets Received 256–511 Octets - The total number of packets (including bad packets) received that were between 256 and 511 octets in length inclusive (excluding framing bits but including FCS octets).
  • Packets Received 512–1023 Octets - The total number of packets (including bad packets) received that were between 512 and 1023 octets in length inclusive (excluding framing bits but including FCS octets).
  • Packets Received 1024–1518 Octets - The total number of packets (including bad packets) received that were between 1024 and 1518 octets in length inclusive (excluding framing bits but including FCS octets).
  • Packets Received > 1518 Octets - The total number of packets received that were longer than 1522 octets (excluding framing bits, but including FCS octets) and were otherwise well formed.
  • Packets RX and TX 64 Octets - The total number of packets (including bad packets) received and transmitted that were 64 octets in length (excluding framing bits but including FCS octets).
  • Packets RX and TX 65–127 Octets - The total number of packets (including bad packets) received and transmitted that were between 65 and 127 octets in length inclusive (excluding framing bits but including FCS octets).
  • Packets RX and TX 128–255 Octets - The total number of packets (including bad packets) received and transmitted that were between 128 and 255 octets in length inclusive (excluding framing bits but including FCS octets).
  • Packets RX and TX 256–511 Octets - The total number of packets (including bad packets) received and transmitted that were between 256 and 511 octets in length inclusive (excluding framing bits but including FCS octets).
Packets Received(con‘t)
  • Packets RX and TX 512–1023 Octets - The total number of packets (including bad packets) received and transmitted that were between 512 and 1023 octets in length inclusive (excluding framing bits but including FCS octets).
  • Packets RX and TX 1024–1518 Octets - The total number of packets (including bad packets) received and transmitted that were between 1024 and 1518 octets in length inclusive (excluding framing bits but including FCS octets).
  • Packets RX and TX 1519–2047 Octets - The total number of packets received and transmitted that were between 1519 and 2047 octets in length inclusive (excluding framing bits, but including FCS octets) and were otherwise well formed.
  • Packets RX and TX 1523–2047 Octets - The total number of packets received and transmitted that were between 1523 and 2047 octets in length inclusive (excluding framing bits, but including FCS octets) and were otherwise well formed.
  • Packets RX and TX 2048–4095 Octets - The total number of packets received that were between 2048 and 4095 octets in length inclusive (excluding framing bits, but including FCS octets) and were otherwise well formed.
  • Packets RX and TX 4096–9216 Octets - The total number of packets received that were between 4096 and 9216 octets in length inclusive (excluding framing bits, but including FCS octets) and were otherwise well formed.
Packets Received Successfully
  • Total Packets Received Without Error - The total number of packets received that were without errors.
  • Unicast Packets Received - The number of subnetwork-unicast packets delivered to a higher-layer protocol.
  • Multicast Packets Received - The total number of good packets received that were directed to a multicast address. Note that this number does not include packets directed to the broadcast address.
  • Broadcast Packets Received - The total number of good packets received that were directed to the broadcast address. Note that this does not include multicast packets.
Receive Packets Discarded

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.

Packets Received with MAC Errors
  • Total Packets Received with MAC Errors - The total number of inbound packets that contained errors preventing them from being deliverable to a higher-layer protocol.
  • Jabbers Received - The total number of packets received that were longer than 1518 octets (excluding framing bits, but including FCS octets), and had either a bad Frame Check Sequence (FCS) with an integral number of octets (FCS Error) or a bad FCS with a non-integral number of octets (Alignment Error). Note that this definition of jabber is different than the definition in IEEE-802.3 section 8.2.1.5 (10BASE5) and section 10.3.1.4 (10BASE2). These documents define jabber as the condition where any packet exceeds 20 ms. The allowed range to detect jabber is between 20 ms and 150 ms.
  • Fragments/Undersize Received - The total number of packets received that were less than 64 octets in length (excluding framing bits but including FCS octets).
  • Alignment Errors - The total number of packets received that had a length (excluding framing bits, but including FCS octets) of between 64 and 1518 octets, inclusive, but had a bad Frame Check Sequence (FCS) with a non-integral number of octets.
  • FCS Errors - The total number of packets received that had a length (excluding framing bits, but including FCS octets) of between 64 and 1518 octets, inclusive, but had a bad Frame Check Sequence (FCS) with an integral number of octets.
  • Overruns - The total number of frames discarded as this port was overloaded with incoming packets, and could not keep up with the inflow.
Received Packets Not Forwarded
  • Total Received Packets Not Forwarded - A count of valid frames received which were discarded (in other words, filtered) by the forwarding process
  • 802.3x Pause Frames Received - A count of MAC Control frames received on this interface with an opcode indicating the PAUSE operation. This counter does not increment when the interface is operating in half-duplex mode.
  • Unacceptable Frame Type - The number of frames discarded from this port due to being an unacceptable frame type.
Packets Transmitted Octets
  • Total Packets Transmitted (Octets) - The total number of octets of data (including those in bad packets) received on the network (excluding framing bits but including FCS octets). This object can be used as a reasonable estimate of Ethernet utilization. If greater precision is desired, the etherStatsPkts and etherStatsOctets objects should be sampled before and after a common interval. -----
  • Packets Transmitted 64 Octets - The total number of packets (including bad packets) received that were 64 octets in length (excluding framing bits but including FCS octets).
  • Packets Transmitted 65-127 Octets - The total number of packets (including bad packets) received that were between 65 and 127 octets in length inclusive (excluding framing bits but including FCS octets).
  • Packets Transmitted 128-255 Octets - The total number of packets (including bad packets) received that were between 128 and 255 octets in length inclusive (excluding framing bits but including FCS octets).
  • Packets Transmitted 256-511 Octets - The total number of packets (including bad packets) received that were between 256 and 511 octets in length inclusive (excluding framing bits but including FCS octets).
  • Packets Transmitted 512-1023 Octets - The total number of packets (including bad packets) received that were between 512 and 1023 octets in length inclusive (excluding framing bits but including FCS octets).
  • Packets Transmitted 1024-1518 Octets - The total number of packets (including bad packets) received that were between 1024 and 1518 octets in length inclusive (excluding framing bits but including FCS octets).
  • Packets Transmitted > 1518 Octets - The total number of packets transmitted that were longer than 1518 octets (excluding framing bits, but including FCS octets) and were otherwise well formed.
  • Max Frame Size - The maximum size of the Info (non-MAC) field that this port will receive or transmit.
  • Maximum Transmit Unit - The maximum Ethernet payload size.
Packets Transmitted Successfully
  • Total Packets Transmitted Successfully- The number of frames that have been transmitted by this port to its segment.
  • Unicast Packets Transmitted - 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.
  • Multicast Packets Transmitted - The total number of packets that higher-level protocols requested be transmitted to a Multicast address, including those that were discarded or not sent.
  • Broadcast Packets Transmitted - The total number of packets that higher-level protocols requested be transmitted to the Broadcast address, including those that were discarded or not sent.
Transmit Packets Discarded The number of outbound packets which were chosen to be discarded even though no errors had been detected to prevent their being deliverable to a higher-layer protocol. A possible reason for discarding a packet could be to free up buffer space.
Transmit Errors
  • Total Transmit Errors - The sum of Single, Multiple, and Excessive Collisions.
  • FCS Errors - The total number of packets transmitted that had a length (excluding framing bits, but including FCS octets) of between 64 and 1518 octets, inclusive, but had a bad Frame Check Sequence (FCS) with an integral number of octets.
  • Underrun Errors - The total number of frames discarded because the transmit FIFO buffer became empty during frame transmission.
Transmit Discards
  • Total Transmit Packets Discards - The sum of single collision frames discarded, multiple collision frames discarded, and excessive frames discarded.
  • Single Collision Frames - A count of the number of successfully transmitted frames on a particular interface for which transmission is inhibited by exactly one collision.
  • Multiple Collision Frames - A count of the number of successfully transmitted frames on a particular interface for which transmission is inhibited by more than one collision.
  • Excessive Collisions - A count of frames for which transmission on a particular interface fails due to excessive collisions.
  • Port Membership Discards - The number of frames discarded on egress for this port due to egress filtering being enabled.
Protocol Statistics
  • 802.3x Pause Frames Transmitted - A count of MAC Control frames transmitted on this interface with an opcode indicating the PAUSE operation. This counter does not increment when the interface is operating in half-duplex mode.
  • GVRP PDUs Received - The count of GVRP PDUs received in the GARP layer.
  • GVRP PDUs Transmitted - The count of GVRP PDUs transmitted from the GARP layer.
  • GVRP Failed Registrations - The number of times attempted GVRP registrations could not be completed.
  • GMRP PDUs Received - The count of GMRP PDUs received in the GARP layer.
  • GMRP PDUs Transmitted - The count of GMRP PDUs transmitted from the GARP layer.
  • GMRP Failed Registrations - The number of times attempted GMRP registrations could not be completed.
  • STP BPDUs Transmitted - Spanning Tree Protocol Bridge Protocol Data Units sent.
  • STP BPDUs Received - Spanning Tree Protocol Bridge Protocol Data Units received.
  • RST BPDUs Transmitted - Rapid Spanning Tree Protocol Bridge Protocol Data Units sent.
  • RSTP BPDUs Received - Rapid Spanning Tree Protocol Bridge Protocol Data Units received.
  • MSTP BPDUs Transmitted - Multiple Spanning Tree Protocol Bridge Protocol Data Units sent.
  • MSTP BPDUs Received - Multiple Spanning Tree Protocol Bridge Protocol Data Units received.
  • SSTP BPDUs Transmitted - Shared Spanning Tree Protocol Bridge Protocol Data Units sent.
  • SSTP BPDUs Received - Shared Spanning Tree Protocol Bridge Protocol Data Units received.
Dot1x Statistics
  • EAPOL Frames Transmitted - The number of EAPOL frames of any type that have been transmitted by this authenticator.
  • EAPOL Start Frames Received - The number of valid EAPOL start frames that have been received by this authenticator.
Traffic Load Statistics
  • Load Interval - The length of time for which data is used to compute load statistics. The value is given in seconds, and must be a multiple of 30. The allowable range is from 30 to 600 seconds
  • Bits Per Second Received - Approximate number of bits per second received. This value is an exponentially weighted average and is affected by the configured load-interval.
  • Bits Per Second Transmitted. - Approximate number of bits per second transmitted. This value is an exponentially weighted average and is affected by the configured load-interval.
  • Packets Per Second Received- Approximate number of packets per second received. This value is an exponentially weighted average and is affected by the configured load-interval.
  • Packets Per Second Transmitted - Approximate number of packets per second transmitted. This value is an exponentially weighted average and is affected by the configured load-interval.
  • Percent Utilization Received - Value of link utilization in percentage representation for the RX line.
  • Percent Utilization Transmitted - Value of link utilization in percentage representation for the TX line.
Time Since Counters Last Cleared The elapsed time, in days, hours, minutes, and seconds since the statistics for this port were last cleared.

If you use the switchport keyword, the following information appears.

Column
Meaning
Packets Received Without Error The total number of packets (including broadcast packets and multicast packets) received by the processor.
Broadcast Packets Received The total number of packets received that were directed to the broadcast address. Note that this does not include multicast packets.
Packets Received With Error The total number of packets with errors (including broadcast packets and multicast packets) received by the processor.
Packets Transmitted without Errors The total number of packets transmitted out of the interface.
Broadcast Packets Transmitted The total number of packets that higher-level protocols requested be transmitted to the Broadcast address, including those that were discarded or not sent.
Transmit Packet Errors The number of outbound packets that could not be transmitted because of errors.
Time Since Counters Last Cleared The elapsed time, in days, hours, minutes, and seconds, since the statistics for this switch were last cleared.

If you use the all keyword, the following information appears for all interfaces on the switch.

Column
Meaning
Port The Interface ID.
Bytes Tx The total number of bytes transmitted by the interface.
Bytes Rx The total number of bytes transmitted by the interface.
Packets Tx The total number of packets transmitted by the interface.
Packets Rx The total number of packets transmitted by the interface.