Configures the action taken when the segment timeout timer expires.
| port | Specifies the port number of the common link port. |
| segment-down | Marks the segment as DOWN if the segment timer expires. No link-status-query is sent to verify that links are down. |
| send-alert | If the segment timer expires, the switch keeps segments up, but sends a warning message to the log. The segment fail flag is set, an SNMP trap is sent, and a link-status-query is sent to verify if any links are down. |
Default is send-alert.
By default, the action is to send an alert if the segment timeout timer expires. Instead of the segment going into a failed state and being marked as down, the segment remains in a segment up state with the failed flag set. The switch writes a critical error message to the syslog warning the user that there is a fault in the segment. An SNMP trap is also sent.
Note
Use caution when setting the segment-timeout expiry action to segment-down. Using this configuration, if the controller or partner node loses three consecutive hello PDUs, the failtimer expires—but there might not be a break in the segment. Opening a blocked port in this situation creates a loop.
When you configure your Extreme Networks switches as the partner and controller, respectively, make sure that their segment timer configurations are identical.
For example, if you have a partner switch with the segment-timeout expiry action set to send-alert, make sure the controller switch has its segment-timeout expiry action set to send-alert.
However, if you have a partner switch with the segment-timeout expiry action set to send-alert, and the controller switch does not have a segment timer configuration, you must configure the partner switch‘s segment-timeout expiry action to segment-down.
If you have a network containing non-Extreme Networks switches or non-EAPS devices, set the segment-timeout expiry action to segment-down.
There is a hardware failure.
The controller or partner received a Link Down message from the partner or controller, respectively.
The segment timer expires and the expiry action was set to segment-down. This means that either the controller or partner did not receive health check messages during the defined segment timeout period.
To view shared-port information, including shared-port segment status, use the following command:
This command was first available in ExtremeXOS 12.1.
This command is available on all platforms with the appropriate license. For complete information about software licensing, including how to obtain and upgrade your license and what licenses are appropriate for this feature, see the ExtremeXOS and Switch Engine 31.7 Feature License Requirements document.