New topicshow ports stack-ports qosmonitor congestion

show ports stack-ports stack_port_list qosmonitor congestion {no-refresh | refresh} {port-number}


Displays packet counts or dropped-traffic counts for each QoS (Quality of Service) profile on the specified stacking ports.

Syntax Description

stack_port_list Specifies one or more stacking ports.
congestion Specifies the display of packets dropped due to port congestion.
no-refresh Specifies a static snapshot of data instead of the default dynamic display.
refresh Specifies a continuous refresh of output.
port-number Displays port number instead of display string in the output of the command.


Displays packet counts in real-time.

If you do not specify a port number or range of ports, traffic counts appear for all ports.

Usage Guidelines

The bottom line in the real-time display shows keys that you can press to change the display. For example, the space bar changes the display from packet counts and dropped-packet counts.



This command does not work properly if another CLI session is displaying congestion statistics in real time.

If you specify the no-refresh option, you see a snapshot of the data at the time you issued the command.

The dropped packet display is limited to the 8 most-significant digits.

When you display the packet counts for a port, this action configures the hardware to monitor that port. If the switch was previously configured to monitor a different port, the counters are reset for the new port. If the selected port is the last port displayed on the switch, the counters are not reset.


The following example shows the dropped packet counts for ports 2:1 and 3:6:
# show ports 2:1, 3:6 qosmonitor congestion
QoS Monitor Req Summary                             Fri Apr 21 01:17:14 2017
Port    QP1      QP2      QP3      QP4      QP5      QP6      QP7      QP8
Pkt      Pkt      Pkt      Pkt      Pkt      Pkt      Pkt      Pkt
Cong     Cong     Cong     Cong     Cong     Cong     Cong     Cong
2:1     0        0        0        0        0        0        0        0
3:6     8745     0        129      0        0        0        0        0
> indicates Port Display Name truncated past 8 characters
Spacebar->Toggle screen 0->Clear counters U->Page up D->Page down ESC->exit


This command was first available in ExtremeXOS 22.3.

Platform Availability

This command is available on the Summit X450-G2, X460-G2, X670-G2, X770, and ExtremeSwitching X440-G2, X620, X690, X870 series switches.