show ports link-flap-detection

show ports [port_list | all] link-flap-detection [disabled-ports | configuration | counters {refresh | no-refresh}]

Description

Displays the link-flap detection status for ports.

Syntax Description

ports Physical ports.
port_list List of ports that you want to see link-flap detection information.
all Shows link-flap detection information for all ports in the system.
disabled-ports Displays ports disabled due to excessive link flapping.
configuration Displays link-flap detection configuration information: link-flap detection enabled status, link-flap detection actions enabled, threshold value, interval value.
counters Displays counters related to link flapping.
refresh Continuous refresh of output (default).
no-refresh Page by page display without continuous refresh.

Default

Output is refreshed by default.

Examples

The following example shows link-flap detection configuration for all ports:

show ports all link-flap-detection configuration
Maximum threshold for interval of 10 seconds : 200
Port      Link-Flap Actions  Threshold     Interval  Disable Time
          Detection                         (secs)         (secs)
========= ========= ======= ========== ============ =============
1         E         D--             20            6           200
2         E         D--             20            6           200
3         D         D-T             20 indefinitely until-cleared
4         E         D-T             20            5           200
5         D         D-T             20            5           200
6         D         D-T             10            5           300
…
=================================================================
> indicates Port Display Name truncated past 8 characters
Link-Flap Detection: (E) Enabled, (D) Disabled
Actions: (D) Disable port, (L) Generate log, (T) Generate SNMP trap

The following example shows link-flap detection counter information for all ports:

show ports all link-flap-detection counters
Port Link-Flap Detection Counters
Port      Port     Current      Total       Time  Threshold
          State Link Flaps Link Flaps    Elapsed   Exceeded
                                          (secs)
========= ===== ========== ========== ========== ==========
1         E              0          0          0          0
2         E              0          0          0          0
3         D              0          0          0          0
4         D F           21         21          4          1
===========================================================
> indicates Port Display Name truncated past 8 characters
Port State: E-Enabled, D-Disabled, F-Disabled by link-flap detection
0->Clear Counters  U->page up  D->page down ESC->exit

The following example shows ports disabled due to excessive link flapping:

show ports all link-flap-detection disabled-ports
Ports disabled due to excessive link flapping
Disabled            Remaining
Port(s)          Disable Time
                       (secs)
=============== =============
1               until-cleared
4                         150
=============================
> indicates Port Display Name truncated past 15 characters

History

This command was first available in ExtremeXOS 22.1.

Platform Availability

This command is available on all Universal switches supported in this document.