The Port Detailed page displays a variety of per-port traffic statistics.
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Port Detailed Statistics Fields
| Field | Description |
|---|---|
| Interface | Use the drop-down menu to select the interface for which data is to be displayed or configured. For non-stacking systems, this field is Slot/Port. |
| Maximum Frame Size | The maximum Ethernet frame size the interface supports or is configured to support. The maximum frame size includes the Ethernet header, CRC, and payload. |
| Packet Lengths Received and Transmitted | |
| 64 Octets | The total number of packets (including bad packets) received or transmitted that were 64 octets in length (excluding framing bits but including FCS octets). |
| 65-127 Octets | The total number of packets (including bad packets) received or transmitted that were between 65 and 127 octets in length inclusive (excluding framing bits but including FCS octets). |
| 128-255 Octets | The total number of packets (including bad packets) received or transmitted that were between 128 and 255 octets in length inclusive (excluding framing bits but including FCS octets). |
| 256-511 Octets | The total number of packets (including bad packets) received or transmitted that were between 256 and 511 octets in length inclusive (excluding framing bits but including FCS octets). |
| 512-1023 Octets | The total number of packets (including bad packets) received or transmitted that were between 512 and 1023 octets in length inclusive (excluding framing bits but including FCS octets). |
| 1024-1518 Octets | The total number of packets (including bad packets) received or transmitted that were between 1024 and 1518 octets in length inclusive (excluding framing bits but including FCS octets). |
| 1519-1522 Octets | The total number of packets (including bad packets) received or transmitted that were between 1519 and 1522 octets in length inclusive (excluding framing bits but including FCS octets). |
| 1523-2047 Octets | The total number of packets (including bad packets) received or transmitted that were between 1523 and 2047 octets in length inclusive (excluding framing bits but including FCS octets). |
| 2048-4095 Octets | The total number of packets (including bad packets) received or transmitted that were between 2048 and 4095 octets in length inclusive (excluding framing bits but including FCS octets). |
| 4096-9216 Octets | The total number of packets (including bad packets) received or transmitted that were between 4096 and 9216 octets in length inclusive (excluding framing bits but including FCS octets). |
| Basic | |
| Unicast Packets | The Transmit column shows 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. The Receive column shows the number of subnetwork unicast packets delivered to a higher-layer protocol. |
| Multicast Packets | The Transmit column shows the total number of packets that higher-level protocols requested be transmitted to a multicast address, including those that were discarded or not sent. The Receive column shows the number of multicast packets delivered to a higher-layer protocol. |
| Broadcast Packets | The Transmit column shows the total number of packets that higher-level protocols requested be transmitted to a broadcast address, including those that were discarded or not sent. The Receive column shows the number of broadcast packets delivered to a higher-layer protocol. |
| Total Packets (Octets) | The total number of octets of data (including those in bad packets) transmitted or received on the interface (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. |
| The total number of packets transmitted or received by this interface that were longer than 1518 octets (excluding framing bits, but including FCS octets) and were otherwise well formed. This counter has a maximum increment rate of 815 counts per second at 10 Mb/s. | |
| 802.3x Pause Frames | The number of MAC Control frames transmitted or received by this interface with an opcode indicating the PAUSE operation. This counter does not increment when the interface is operating in half-duplex mode. |
| FCS Errors | The total number of packets transmitted or received by this interface 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. |
| Protocol | |
| STP BPDUs | The number of STP (Spanning Tree Protocol) BPDU (Bridge Protocol Data Unit) units transmitted or received by the interface. |
| RSTP BPDUs | The number of Rapid STP BPDUs transmitted or received by the interface. |
| MSTP BPDUs | The number of Multiple STP BPDUs transmitted or received by the interface. |
| SSTP BPDUs | The number of Shared STP BPDUs transmitted or received by the interface. |
| GVRP PDUs | The number of GVRP (GARP VLAN Registration Protocol) PDUs transmitted or received by the interface. |
| GMRP PDUs | The number of GARP Multicast Registration Protocol (GMRP) PDUs transmitted or received by the interface. |
| EAPOL Frames | The number of Extensible Authentication Protocol (EAP) over LAN (EAPOL) frames transmitted or received by the interface for IEEE 802.1X port-based network access control. |
| Advanced - Transmit | |
| Total Transmit Packets Discarded | 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 Collision Frames | A count of frames for which transmission on a particular interface fails due to excessive collisions. |
| Underrun Errors | The total number of frames discarded because the transmit FIFO buffer became empty during frame transmission. |
| GMRP Failed Registrations | The number of times attempted GMRP registrations could not be completed. |
| GVRP Failed Registrations | The number of times attempted GVRP registrations could not be completed. |
| Percent Utilization Transmitted (%) | The amount of link utilization, represented as a percentage of total link bandwidth, for the TX direction. |
| Advanced - Receive | |
| Total Packets Received Not Forwarded | The number of inbound packets which were chosen to be discarded to prevent them from being delivered to a higher-layer protocol, even though no errors had been detected. One possible reason for discarding such a packet is to free up buffer space. |
| Total Packets Received With MAC Errors | The total number of inbound packets that contained errors preventing them from being delivered to a higher-layer protocol. |
| Overruns | The total number of frames discarded as this port was overloaded with incoming packets, and could not keep up with the inflow. |
| 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. |
| 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 Received | The total number of packets received that were less than 64 octets in length with ERROR CRC (excluding framing bits but including FCS octets). |
| Undersize Received | The total number of packets received that were less than 64 octets in length with GOOD CRC (excluding framing bits but including FCS octets). |
| Unacceptable Frame Type | The number of frames discarded from this interface due to being a frame type that the interface cannot accept. |
| Percent Utilization Received (%) | The amount of link utilization, represented as a percentage of total link bandwidth, for the RX direction. |
| Time Since Counters Last Cleared | The amount of time in days, hours, minutes, and seconds, that has passed since the statistics for this interface were last reset. |
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