Displays real-time receive error statistics. The switch automatically refreshes the output unless otherwise specified.
| port_list | Specifies one or more ports or slots and ports. |
| stacking-port-list | Specifies one or more stacking ports or slots. Applies to SummitStack and the ExtremeSwitching series switches only. |
| no-refresh | Specifies that auto-refresh is disabled. The output provides a real-time snapshot of the receive errors at the time the command is issued. This setting is not saved. |
| refresh | Specifies a continuous refresh of output. |
The switch automatically refreshes the output.
If you do not specify a port number or range of ports, receive error statistics are displayed for all ports.
If you do not specify the no-refresh parameter, the switch automatically refreshes the output (this is the default behavior).
If you specify the no-refresh parameter, the output provides a snapshot of the real-time receive error statistics at the time you issue the command and displays the output in page-by-page mode (this was the default behavior in ExtremeXOS 11.2 and earlier). This setting is not saved; therefore, you must specify the no-refresh parameter each time you want a snapshot of the port receive errors.
This status information may be useful for your technical support representative if you have a network problem.
Port Number.
Receive Bad CRC Frames (RX CRC)—The total number of frames received by the port that were of the correct length, but contained a bad FCS value.
For information about the available port monitoring display keys, see the show ports statistics command.
Note
On a V300 bridge port extender (BPE) port, neither show ports port_list qosmonitor {congestion} {no-refresh | refresh} {port-number} nor show ports port_list congestion {no-refresh | refresh}{port-number} increments when there is egress congestion. Instead, you can view egress congestion using this command on the ingress port (upstream port in many cases).The following command displays receive error statistics for all ports on the switches with auto-refresh enabled (the default behavior):
show ports rxerrors
The following is sample truncated output from this command:
Port Rx Error Monitor Tue Jul 5 15:07:13 UTC 2005 Port Link Rx Rx Rx Rx Rx Rx Rx State Crc Over Under Frag Jabber Align Lost ======================================================================== 1 R 0 0 0 0 0 0 0 2 R 0 0 0 0 0 0 0 3 R 0 0 0 0 0 0 0 4 R 0 0 0 0 0 0 0 5 R 0 0 0 0 0 0 0 6 R 0 0 0 0 0 0 0 7 R 0 0 0 0 0 0 0 8 R 0 0 0 0 0 0 0 9 R 0 0 0 0 0 0 0 10 R 0 0 0 0 0 0 0 11 R 0 0 0 0 0 0 0 12 R 0 0 0 0 0 0 0 13 R 0 0 0 0 0 0 0 14 R 0 0 0 0 0 0 0 15 R 0 0 0 0 0 0 0 16 R 0 0 0 0 0 0 0 17 R 0 0 0 0 0 0 0 ======================================================================== Link State: A-Active, R-Ready, NP-Port Not Present, L-Loopback 0->Clear Counters U->page up D->page down ESC->exit
This command was first available in ExtremeXOS 10.1.
The link state information was updated to include NP-Port not present in ExtremeXOS 11.2.
Support for the auto-refresh functionality and the no-refresh parameter were added in ExtremeXOS 11.3. Auto-refresh continually updates the display. The no-refresh parameter takes a real-time snapshot of the display at the time you issue the command.
The refresh keyword was added in ExtremeXOS 16.1.
This command is available on the ExtremeSwitching X435, X440-G2, X450-G2, X460-G2, X465, X590, X620, X670-G2, X690, X695, and X870 series switches.