HP StorageWorks 2/16V Brocade Web Tools Administrator's Guide (53-0000194-01, - Page 284
Displaying Code Information, Displaying the Control Device State
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18 Displaying Code Page Information The Code Page field identifies the language used to exchange information between the FICON director and Host Programming. It is a read-only field in Web Tools, as it is set by Host Programming only. When FMS mode is disabled, the code page is displayed as unavailable. To display the code page information 1. Click a FICON-enabled switch from the Fabric Tree. 2. Launch the Switch Admin module as described on page 3-3. 3. Click the FICON CUP tab. The FICON CUP tabbed page displays, with the FICON Management Server subtabbed page in front (see Figure 18-1 on page 18-3). All attributes on this tab are read-only until FMS mode is enabled. The code page format is displayed in the Code Page field as shown in the example below: Language used to exchange information with Host Programming: (EBCDIC) USA/Canada -- 00037 Displaying the Control Device State The control device is in either a neutral or a switched state. When it is neutral, the control device accepts commands from any channel that has established a logic path with it and accepts commands from alternate managers. When the control device is switched, it establishes a logical path and accepts commands only from that logical path ("device allegiance"). Commands from other paths cause a FICON CUP Busy Error. Most "write" operations from alternate managers are also rejected. Device allegiance usually lasts for a very short time. However, under abnormal conditions, device allegiance can get "stuck" and fail to terminate. It might cause the switch to be unmanageable with CUP, and you will continue to receive the FICON CUP Busy Error. In this case, you should check the control device state and the last update time to identify if the device allegiance is stuck. The Web Tools Switch Admin displays the control device state and last update time (see Figure 18-1 on page 18-3). You can click Refresh to get most recent update. You can manually reset allegiance to bring the control device back to the neutral state by clicking Reset Allegiance in the FICON CUP Busy Error display (see Figure 18-2). Figure 18-2 FICON CUP Busy Error 18-6 Web Tools Administrator's Guide Publication Number: 53-0000194-01