Filter
Top Products
Send documentation comments to mdsfeedback-doc@cisco.com.
22-19
Cisco MDS 9000 Family Fabric Manager Configuration Guide
OL-6965-03, Cisco MDS SAN-OS Release 2.x
Chapter 22 FICON Configuration
Clearing FICON Device Allegiance
Port Swapping Guidelines
Be sure to follow these guidelines when using the FICON port swap feature:
• Port swapping is not supported for logical ports (PortChannels, FCIP links). Neither the
old-port-number nor the new-port-number can be a logical port.
• Port swapping is not supported between physical ports that are part of a PortChannel. Neither the
old-port-number nor the new-port-number can be a physical port that is part of a PortChannel.
• Before performing a port swap, the Cisco MDS SAN-OS software performs a compatibility check.
If the two ports have incompatible configurations, the port swap is rejected with an appropriate
reason code. For example, if a port with BB_credits as 25 is being swapped with an OSM port for
which a maximum of 12 BB_credits is allowed (not a configurable parameter), the port swapping
operation is rejected.
• If ports have default values (for some incompatible parameters), then a port swap operation is
allowed and the ports retain their default values. If you swap a 16-port module with a 32-port
module, the BB_credits will no longer be compatible and the ports can be swapped. If BB_credits
are not configured, the default settings will still be in effect at the time of the swap.
Note The 32-port module guidelines also apply for port swapping configurations (see the “32-Port
Configuration Guidelines” section on page 18-5).
Swapping FICON Ports
Note To view the latest FICON information, you must click the Refresh button. See the “FICON Information
Refresh Note” section on page 22-14 for more information.
To swap ports using Device Manager, follow these steps:
Step 1 Select two Fibre Channel ports, by holding down the CTRL key and clicking on them with the mouse.
Step 2 Select Swap Selected Ports from the FICON menu.
Clearing FICON Device Allegiance
FICON requires serialization of access among multiple mainframes, CLI, and SNMP sessions be
maintained on Cisco MDS 9000 Family switches by controlling device allegiance for the currently
executing session. Any other session is denied permission to perform configuration changes unless the
required allegiance is available.
Caution This task terminates the currently executing session.