HP FlexFabric 12900 Series Configuration Manual page 32

Excluding a port from the shutdown action upon detection of multi-active collision
CAUTION:
Excluding a VLAN interface and its Layer 2 ports from the shutdown action introduces IP collision risks
because the VLAN interface might be active on both the active and inactive IRF fabrics.
By default, all ports except the console and IRF physical interfaces shut down automatically when the IRF
fabric transits to the Recovery state.
You can exclude a port from the shutdown action for management or other special purposes. For
example:
Exclude a port from the shutdown action, so you can Telnet to the port for managing the device.
•
Exclude a VLAN interface and its Layer 2 ports from the shutdown action, so you can log in through
•
the VLAN interface.
To configure a port to not shut down when the IRF fabric transits to the Recovery state:
Step
1. Enter system view.
2. Configure a port to not shut
down when the IRF fabric
transits to the Recovery state.
Recovering an IRF fabric
After the failed IRF link between two split IRF fabrics is recovered, log in to the inactive IRF fabric in
Recovery state, and use the reboot command to reboot all its members. If the irf auto-merge enable
command has been configured, the inactive IRF member devices automatically reboot after the failed
link is recovered. After these member devices join the active IRF fabric as subordinates, IRF merge is
complete, as shown in
Figure 10 Recovering the IRF fabric
IRF fabric 1
(Active)
If the active IRF fabric fails before the IRF link is recovered (see
on the inactive IRF fabric. This command changes the MAD state of the inactive IRF fabric to Detect and
brings up all physical ports that were shut down by MAD. After you repair the IRF link, the two parts
merge into a unified IRF fabric.
Figure 10.
IP network
IRF fabric 2
(Recovery)
After the IRF link
is recovered
IP network
Command
system-view
mad exclude interface interface-type
interface-number
IP network
IRF fabric 1
(Active)
IP network
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Remarks
N/A
By default, all network ports on a
Recovery-state IRF fabric are shut
down, except for the IRF physical
interfaces and console port.
IRF fabric 2
(Recovery)
IRF merge
Figure 1 1), use the mad restore command
IP network
IRF
fabric
IP network