HP 10500 Series Configuration Manual page 35

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 1 1.
Figure 11 Recovering the IRF fabric
If the active IRF fabric has failed, for example, because of device or link failures, before the IRF link is
recovered (see Figure 12), use the mad restore command on the inactive IRF fabric to change its MAD
state to Detect and bring 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 12 Active IRF fabric fails before the IRF link is recovered
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