Uplink and downlink port advanced statistics

The port statistics that are displayed in the Advanced Statistics section for uplink, downlink, and stacking ports provide information that helps to monitor and troubleshoot the operation of the interconnect. The statistics that are displayed depend on the interconnect and port type.

For Ethernet interconnects, the statistics are a subset of the values that are defined in the following Request for Comments (RFC).

  • RFC1213

  • RFC1493

  • RFC1757

  • RFC2233

  • RFC2665

The following list of statistics is displayed for both the uplink and the stacking ports. For these statistics, the stacking link ports display a value of 0.

Cisco FEX port statistics

Port counters

Description

Received

Unicast packets

The total number of unicast packets received on the interface.

Multicast packets

The total number of multicast packets received on the interface.

Broadcast packets

The total number of broadcast packets received on the interface.

Input packets

The total number of packets received on the interface.

Jumbo packets

The total number of jumbo packets received on the interface.

Storm suppression bytes

The total number of storm suppression bytes received on the interface.

Giants

The total number of giants received on the interface.

Short frame

The number of short frames where the frames are smaller than the minimum size of 64 bytes.

Overrun

The number of times the receiver hardware was unable to handoff received data to a hardware buffer.

Underrun

The number of times that the transmitter has been faster than the switch can handle.

Watchdog

The number of watchdog packets.

If down drop

The number of packets dropped due to the interface being down.

Input with dribble

The number of input packets with the dribble condition where the packets are slightly longer frames.

Input discard

The number of input packets that were discarded.

Rx pause

The number of receive pause frames.

Transmitted

Unicast packets

The total number of unicast packets transmitted on the interface.

Multicast packets

The total number of multicast packets transmitted on the interface.

Broadcast packets

The total number of broadcast packets transmitted on the interface.

Output packets

The total number of packets transmitted on the interface.

Collision

The number of frames for which one or more collisions occurred when the frames were sent.

Deferred

The number of times the interface has tried to send a frame, but found the carrier busy at the first attempt.

Late collision

The number of times a collision is detected on a particular interface late in the transmission process.

Lost carrier

The number of times the carrier was lost in transmission.

No carrier

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

Babble

The number of times the transmit jabber timer expired.

Tx pause

The number of transmission pause frames.

Interface resets

The number of times an interface has been reset.

More information