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Cisco MDS 9000 Fabric Manager Switch Configuration Guide
OL-7753-01
Chapter 23 Configuring FICON
Swapping FICON Ports
Swapping the ports causes all configuration associated with old-port-number and new port-number to be
swapped, including VSAN configurations. This command is only associated with the two ports in
concerned. You must issue this VSAN-independent command from the EXEC mode.
Tip
If the
active equals saved
option is enabled on any FICON VSAN, then the swapped configuration is
automatically saved to startup. Otherwise, you must explicitly copy the running startup immediately
after swapping the ports.
MDS switches also allow port swapping for non-existent ports as specified below:
•
Only FICON-specific configurations (prohibit, block, and port address mapping) is swapped.
•
No other system configuration is swapped.
•
All other system configurations are only maintained for existing ports.
Once you swap ports, the switch automatically performs the following actions:
•
Shuts down both the old and new ports
•
Swaps the port configuration
•
Any attempt to bring the port up using the after swap noshut option after the new-port-number will
not work unless you explicitly issue the
no shutdown
command to resume traffic.
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 SAN-OS software performs a compatibility check. If the two
ports have incompatible configuration, 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 swap operation is
rejected.
•
If ports have default values (for some incompatible parameters), then port swap is allowed to go
through 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.
The 32-port module guidelines also apply for port swapping configurations.
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 23-15
for more information.
To swap ports, follow these steps:
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