Brocade FICON Administrator's Guide v7.1.0 (53-1002753-01, March 2013)

FICON Administrator’s Guide 61

53-1002753-01

Configuration restoration in a FICON environment

If the switch is operating in a FICON CUP environment, and the ASM (Active=Saved) bit is set on,

then the switch ignores the IPL file downloaded when you restore a configuration. Table 7

describes this behavior in more detail.

If FMS mode is enabled in a configuration file, but is disabled on the switch, the configDownload

command fails and displays an error message. This prevents undesirable conditions that could

result from enabling fmsmode on a switch that does not require it.

Traffic Isolation Zoning

Traffic Isolation (TI) Zoning allows data paths to be specified. In a FICON fabric, you need Fabric OS

v6.2.0 or later. TI Zoning has the following benefits:

• Separates direct attached storage device (DASD) and tape traffic.

• Selects traffic for diverse ISL routes (typical of dual fiber networks).

• In conjunction with long-distance channel extension equipment (FICON Acceleration),

guarantee bandwidth for certain mission-critical data.

Creating logical switches is preferred over creating TI Zones for FICON emulation configurations.

Logical switches can be created easily and they naturally separate disk and tape traffic to different

tunnels and network bandwidth.

For more information on Traffic Isolation Zoning, refer to the Fabric OS Administrator’s Guide.

NOTE

Session-based zoning enforcement is not recommended on a FICON switch. For more information

on session-based zoning enforcement, refer to the Fabric OS Administrator’s Guide.

TABLE 7 Backup and restore in a FICON CUP environment

ASM bit Command Description

on or off configUpload All the files saved in the file access facility are uploaded to the

management workstation. A section in the uploaded configuration file

labeled FICON_CUP is in an encoded format.

on configDownload Files saved on the switch that are also present in the FICON_CUP

section of the configuration file are overwritten.

Files in the FICON section of the configuration file that are not

currently present on the switch are saved.

The IPL file is not replaced, because Active=Saved mode is on.

off configDownload Files saved on the switch that are also present in the FICON_CUP

section of the configuration file are overwritten.

Files in the FICON section of the configuration file that are not

currently present on the switch are saved.

The IPL file is replaced, because Active=Saved mode is off. A warning

message is displayed in the syslog to warn that the IPL file is not being

overwritten.