Displays the link-flap detection status for ports.
| 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. |
Output is refreshed by default.
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
This command was first available in ExtremeXOS 22.1.
This command is available on ExtremeSwitching X435, X440-G2, X450-G2, X460-G2, X465, X590, X620, X670-G2, X690, X695, X870, 5320, 5420, and 5520 series switches.