H3C Technologies H3C S12500 Series Switches - Manual (Page 38)

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Step Command Remarks
1. Enter system view. system-view N/A
2. Set the IRF link down report
delay.
irf link-delay interval
Optional.
The default IRF link down report
delay is 0 millisecond.
The recommended value range is
200 to 500 milliseconds. The
greater the interval, the slower
the service recovery.
Enabling IRF link failure detection and auto-recovery
IRF link failure detection and auto-recovery automatically check the health of IRF links and make link
recovery attempts when a failed IRF link is detected. The two functions are helpful for IRF fabrics that have
more than one IRF link.
To enable IRF link failure detection and auto-recovery:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enable IRF link failure
detection.
irf link-status detect enable
Optional.
By default, this function is
enabled.
IRF link failure detection must be
enabled when a relay device is
present between two member
devices.
3. Enable IRF link
auto-recovery.
irf link-status auto-recover enable
Optional.
By default, this function is
enabled.
You can enable IRF link
auto-recovery only if IRF link
failure detection has been
enabled.
When detecting an IRF link failure, the IRF link failure detection function handles the physical IRF port
depending on the status of IRF link auto-recovery:
• If IRF link auto-recovery is enabled, the IRF link failure detection feature disables the physical IRF
port to receive packets, and outputs a log message every 10 seconds (for example, "IRF member
port GigabitEthernet1/4/0/1 does not work in receive direction").
{
If the IRF fabric splits after the disable action, the physical IRF port can continue to receive
packets.
{
If you disable IRF link failure detection or auto-recovery after the disable action, the physical IRF
port shuts down. To bring the port up, use the undo shutdown command.
• If IRF link auto-recovery is disabled, the IRF link failure detection feature shuts down the physical IRF
port.