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Enabling Irf Link Failure Detection And Auto-recovery; Configuring Mad - HP 12500 SERIES Configuration Manual

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Enabling IRF link failure detection and auto-recovery

IRF link failure detection and auto-recovery automatically check the health of IRF links and
automatically 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 between each two member devices.
To enable IRF link failure detection and auto-recovery:
Step
1.
Enter system view.
2.
Enable IRF link failure
detection.
3.
Enable IRF link
auto-recovery.
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, disables the physical IRF port to receive packets, and
outputs a log message (for example, "IRF member port GigabitEthernet1/4/0/1 does not work
in receive direction") every 10 seconds.
If the IRF fabric splits after that, the physical IRF port can continue to receive packets.
If you disable IRF link failure detection or auto-recovery, the physical IRF port shuts down.
To bring the port up, use the undo shutdown command.
If IRF link auto-recovery is disabled, shuts down the physical IRF port.
The port stays in DOWN state, even if you enable the IRF link auto-recovery function. To
bring the port up, use the undo shutdown command.
If the IRF fabric splits, the physical IRF ports in DOWN state change to the previous state.

Configuring MAD

You have the following MAD mechanisms for detecting multi-active collisions in different network
scenarios:
LACP MAD
BFD MAD
ARP MAD
Command
system-view
irf link-status detect enable
irf link-status auto-recovery enable
28
Remarks
N/A
Optional.
By default, this function is
enabled.
IRF link failure detection must
be enabled when a relay device
is present between two
member devices.
Optional.
By default, this function is
enabled.
You can enable IRF link
auto-recovery only if IRF link
failure detection has been
enabled.

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