Scenario IV – Configuration changes for installing a FICON bridge card in a 9032–5 ESCON director

The new FICON Conversion Channels ( FCVs ), with their wider bandwidth compared to classical ESCON channels, allow connecting more I/O equipment to a single channel. To use the FCV channels, they must be connected to a FICON bridge card installed in a 9032-5 ESCON director. To install FCV channels and a FICON bridge card in an 9032-5 you must follow some configuration rules:

FCV channels can only be installed in specific locations in the processor and have particular CHPID numbers depending on the processor type.
FICON bridge cards can have only one port address (and link address), on a modulo 8 + 4 port address.
The 7 consecutive subsequent port addresses of a FICON bridge port address are used by the FICON bridge card and cannot be used for other connections.

The FICON conversion utility can be used for adapting an IODF to use FCV channels. The following scenario shows an example of how an I/O configuration can easily be changed using the utility. The starting point in this scenario is a configuration in which a CNC CHPID D4 is connected to a port 74. CNC CHPID D7 is also connected to the ESCD. Three additional CHPIDs are connected to ports 75, 78, and 79. The objective of the configuration changes is to have a FICON bridge card at position 74, and CHPID D4 must be converted from CHPID type CNC to FCV. Also, all attached I/O equipment of CHPID D7 is disconnected and reconnected to the FCV CHPID D4 (aggregation of CHPID D7 to D4) to make use of the wider bandwidth of the FCV channel. The original connection between ESCD port E0 and CHPID D7 will be disconnected (since this connection is no longer used). The connections between ports 75, 78, and 79 and their channels must be relocated to different positions on the director, since the original port addresses can no longer be used after installing a FICON Bridge card . Re locating the connections from 75, 78, and 79 to different positions using this utility will not affect the connectivity of the respective CHPIDs to their I/O equipment.

To perform the changes, proceed as follows:

Invoke the Convert ESCON Port to FC... utility from the Utilities menu.
The wizard will appear and explain the following steps.
Click the Next > button to continue.
A list of all possible ports that can be used to hold a FICON bridge card will be shown . The only selectable ports will be those with an appropriate port address (starting with 04 modulo 8 + 4 of 9032-5) and which are already connected to an FCV or to an FCV-eligible CHPID (for example, a CHPID whose type can be changed to FCV). All ports that are not usable for a FICON bridge card are grayed out .
Select port 74 of director 05 connected to CHPID D4 of processor SYSB and click Next >.
In the following step, you have the chance to aggregate I/O equipment of other CHPIDs to CHPID D4. Select CHPID D7 of processor SYSB to be aggregated to D4 and click the ADD > button.
In the bottom part of the window you see CHPIDs and their I/O equipment as it is aggregated. Click Next > to continue.
In the following window, you can specify whether or not to disconnect the just selected CHPID for aggregation of D7 from its port of the ESCD.
Click Next > to continue to displace port connections.
You can now determine where to move port connections from connections to port addresses which must be freed, since they follow directly after the port address of the FICON bridge port address. For port address 75 connected to CHPID DF of processor SYSB, specify the new port address 06. For port address 78 connected to CHPID EA of processor SYSB, specify the new port address 07. For 79 connected to CHPID DD of processor SYSB, specify the new port address 08. You can use the prompting capability to check for free port addresses. After selecting new port addresses for connections that must be displaced, click Next > to see the final summary.
You now see the final summary of all changes to the configuration. This summary lists all affected objects including the changes to be performed to the IODF. Scroll down to examine the complete list, which will contain information such as:
- CHPID that will be the FCV
- Aggregated CHPIDs
- Possibly disconnected CHPIDs
- Control unit connections moved
- Port connections moved
- Uninstalled ports
Scroll down to see the complete summary. You can save the summary to a file to store the list of changes for archive purposes or to use the list as a worksheet for guidance for changing the cable connections directly at the hardware box. As long as you do not click the Finish button, no changes are written to the HCM configuration and no changes are made to the IODF. It is still possible to refrain from performing the specified changes. Click the Finish button to allow the wizard to complete. Confirm the configuration changes after you have examined all the listed items in the summary and agree with it.

If you save this summary to a file, you will have the following list of configuration changes:

CHPID SYSB.D4 's type will be changed from CNC to FCV.
The following CHPIDs will be aggregated with SYSB.D4:
```
  SYSB.D7
```
The following CHPIDs will be disconnected :
```
  CHPID       Port
  SYSB.D7     05.E0
```
Port names will be moved with their ports.

The following connections will be moved :

                                  From    To
SYSB.DF                           05.75   05.06
SYSB.E4                           05.78   05.07
SYSB.DD                           05.79   05.08

The IODF will beont BackColor="#7DFB87">updated as follows:

CHPID Type changes                From    To
SYSB.D4                           CNC     FCV

The following control unit connections will be moved :

                                  From         To
CU 0241 (3990-3)                  SYSB.D7      SYSB.D4

Any devices using a source CHPID as the preferred CHPID will be updated to use the target CHPID.

The following port connections will be moved :

                                  From    To
SYSB.D7                           05.E0   -----
SYSB.DD                           05.79   05.08
SYSB.DF                           05.75   05.06
SYSB.E4                           05.78   05.07

The switch configurations on director 05 (if any) will be updated as required.

The following ports will be un installed :