HP A7533A - Brocade 4Gb SAN Switch Base Administrator's Manual page 443

3. Enter the interopmode 0 command to disable interoperability. This command resets a number of
parameters and disables interactive mode.
4. You must reboot the switch after changing the interoperability mode:
switch:admin> switchdisable
switch:admin> interopmode 0
The switch effective configuration will be lost when the operating mode is changed;
do you want to continue? (yes, y, no, n): [no] y
done.
Interopmode is disabled
Note: You must reboot this switch for the new change to take effect.
switch:admin>
5. Wait for a fabric reconfiguration after removing each switch.
6. Each non-HP StorageWorks switch might require the execution of a similar command to disable
interoperability.
7. Repeat this procedure on all HP StorageWorks switches in the fabric.
Fabric OS 5.3.0 administrator guide 445