Configuration

Software Status

Indicates whether the interface has been enabled or disabled by the operator.

Hardware Status

Indicates whether the line protocol for the interface is up or down.

Maximum Rate

The rate setting for the ethernet interface, either 10 Mbps or 100 Mbps.

Duplex

The duplex setting for the ethernet interface, either half or full.

Interface Statistics

Interface Resets

The number of times an interface has been completely reset.

No Carrier

The number of times the carrier was not present during the transmission.

Lost Carrier

The number of times the carrier was lost during transmission.

Receive/Transmit Statistics

Receive

5 min Input Rate (bits/sec)

The average number of bits per second transmitted in the last 5 minutes.

5 min Input Rate (packets/sec)

The average number of packets per second transmitted in the last 5 minutes.

Time Since Last Input

The number of hours, minutes, and seconds since the last packet was successfully received by an interface. Knowing this time helps you determine the traffic load on the interface and locate network problems.

Total Packets Input

The total number of error-free packets received by the system.

Total Bytes Input

The total number of bytes, including data and MAC encapsulation, received by the system.

Broadcast Packets

The total number of broadcast packet received by the interface.

Transmit

5 min Output Rate (bits/sec)

The average number of bits transmitted per second in the last 5 minutes.

5 min Output Rate (packets/sec)

The average number of packets transmitted per second in the last 5 minutes.

Time Since Last Output

The number of hours, minutes, and seconds since the last packet was successfully transmitted by the interface. Knowing this time helps you determine the traffic load on the interface and locate network problems.

Total Packets Output

The total number of messages transmitted by the system.

Total Bytes Output

The total number of bytes, including data and MAC encapsulation, transmitted by the system.

Error Statistics

Receive

Total Input Errors

The total number of input-related errors that occurred, including runts, giants, no buffer, CRC, frame, overrun, and ignored counts.

Overrun Errors

The number of times the receiver hardware was unable to send received data to a hardware buffer because the input rate exceeded the receiver's ability to process the data.

Ignored Packets

The number of received packets ignored by the interface because the interface hardware ran low on internal buffers. Broadcast storms and bursts of noise can cause the ignored count to be increased.

Framing Errors

The number of packets received incorrectly having a CRC error and non-integer number of octets. These errors occur on a LAN as a result of a collision or malfunctioning Ethernet device.

CRC Errors

Cyclic redundancy checksum generated by the originating LAN station or far-end device that does not match the checksum calculated from the data received. These errors indicate noise or transmission problems on the LAN interface or LAN bus itself. A high number of CRC errors usually results in collisions or the transmission of bad data.

Packet too Short (Runts)

The number of packets that are discarded because they are smaller than the medium's minimum packet size. For example, any Ethernet packet that is less than 64 bytes is considered a runt.

Packet too Long (Giants)

The number of packets that are discarded because they exceed the medium's maximum packet size. For example, any Ethernet packet that is greater than 1,518 bytes is considered a giant.

Throttles

The number of times the receiver on the port was disabled, possibly due to buffer or processor overload.

Transmit

Total Output Errors

The sum of all errors that prevented the final transmission of datagrams from being examined.

Underrun Errors

The number of times the transmitter has run faster than the router can handle.

Deferred Packets

The number of packets deferred for an excessive period of time.

Babbles

The number of times the transmit jabber time expired.

Collisions

The number of packets retransmitted because of an Ethernet collision (only applicable in half duplex).

Late Collisions

The number of late collisions. This collision usually results from an overextended LAN where the Ethernet or transceiver cable is too long, where too many cascaded multiport transceivers are used, or where more than two repeaters are used between stations.

Last Output Hang

The number of hours, minutes, and seconds (or never) since the interface was last reset because of a transmission that took too long. When the number of hours in Time Since Last Input, Time Since Last Output, or Last Output Hang fields exceeds 24, the number of days and hours is printed.