Setting Mode Register Bits; Persistently Enabling/Disabling Ports - HP AE370A - Brocade 4Gb SAN Switch 4/12 Administrator's Manual

Setting mode register bits

Use the ficoncupset modereg command to set the FICON CUP mode register bits for the local switch.
Consider the following when changing mode register bits:
• As required by the CUP protocol, the UAM bit cannot be changed using this command.
• All mode register bits except UAM are saved across power on/off cycles; the UAM bit is reset to 0
following a power-on.
• Mode register bits can be changed when the switch is offline or online. If the ACP or HCP bits are
changed when the switch is online, they will take effect any time between the completion of the current
command and the end of the CCW command chain (or the next alternate manager operation).
The command format is:
ficoncupset modereg [bitname] 0 | 1
where:
bitname
0
1
The following example sets the mode register bit HCP to off:
switch:admin> ficoncupset modereg HCP 0
Mode register bit HCP has been set to 0.
The following example sets the mode register bit ACP to on:
switch:admin> ficoncupset modereg ACP 1
Mode register bit ACP has been set to 1.

Persistently enabling/disabling ports

When fmsmode is enabled, you cannot use the portCfgPersistentEnable and
portCfgPersistentDisable commands to persistently enable and disable ports. Instead, use the
following procedure:
1. Enter the ficoncupshow modereg command to display the mode register bit settings.
2. Verify that the ASM bit is set on (1).
3. If the ASM bit is set off (0), enter the ficoncupset modereg asm 1 command to set it on
4. Use the portEnable and portDisable commands to enable and disable ports as necessary.
The ports remain enabled or disabled after a switch reboot.
In the following example, the ASM bit is set to on; then, the port at slot 1, port 1 is enabled persistently:
switch:admin> ficoncupshow modereg
POSC UAM ASM
------------------------------
1 0
switch:admin> ficoncupset modereg ASM 1
Mode register bit ASM has been set to 1.
switch:admin> portenable 1/1
252 Administering FICON fabrics
One of the mode register bits described in
Specifies that the bit is off.
Specifies that the bit is on.
DCAM ACP HCP
0 0 1 1
Table 54 on page 251.