Enabling hardware failure protection for aggregation groups
After you enable hardware failure protection for aggregation groups, the system follows the following rules when it detects a hardware failure on a member interface of an aggregation group:
If the member interface is not the last member in up state in the group, the system shuts down the interface.
If the member interface is the last member in up state in the group, the system does not shut down the interface.
To enable hardware failure protection for aggregation groups:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Set the action to be taken in response to failures on the forwarding plane to isolate. | hardware-failure-detection forwarding isolate | By default, the system takes the action of warning (sending traps) in response to forwarding-plane failures. |
3. Enter Ethernet interface view. | interface interface-type interface-number | N/A |
4. Disable hardware failure protection for the interface. | undo hardware-failure-protection auto-down | By default, hardware failure protection is enabled. Configure this command on every member interface in the aggregation group. If you do not configure this command on a member device, the system shuts down the interface when it detects a hardware failure on the interface, whether or not the interface is the last member in up state in the group. |
5. Exit to system view. | quit | N/A |
6. Enable hardware failure protection for aggregation groups. | hardware-failure-protection aggregation | By default, hardware failure protection is disabled for aggregation groups. |
The hardware-failure-protection aggregation and hardware-failure-protection auto-down commands do not take effect on an interface in the following cases:
Loopback testing is enabled (using the loopback { external | internal } command).
The interface is forcibly brought up (using the port up-mode command).
The interface is a physical IRF port. For more information about physical IRF ports, see HP FlexFabric 12500 and 12500E Routing Switch Series Virtualization Configuration Guide.
An interface shut down for hardware failure protection is in Protect DOWN state. You can use the display interface command to view the status. To restore the interface to UP state, execute the undo shutdown command.
For a card that is isolated or forbidden to load software for hardware failure protection, you can remove it and then reinstall it to restore it to operating state.
To view hardware failure detection and protection information, use the display hardware-failure-detection command.