About Port Swapping - Cisco MDS 9000 Series Configuration Manual

Configuring FICON
Tip If you check the Active=Saved check box active equals saved is enabled on any FICON VSAN, then the
swapped configuration is automatically saved to startup. Otherwise, you must explicitly save the running
configuration immediately after swapping the ports.
Once you swap ports, the switch automatically performs the following actions:
• Shuts down both the old and new ports.
• Swaps the port configuration.
If you attempt to bring the port up, you must explicitly shut down the port to resume traffic.
Note
To view the latest FICON information, you must click the Refresh button. See the
Running Configuration, on page
The ficon swap portnumber command is only associated with the two ports concerned. You must issue this
VSAN-independent command from EXEC mode. Cisco MDS NX-OS checks for duplicate port numbers in
a VSAN before performing the port swap.
If you attempt to bring the port up by specifying the ficon swap portnumber old-port-number new-port-number
after swap noshut command, you must explicitly issue the no shutdown command to resume traffic.
This section includes the following topics:

About Port Swapping

Be sure to follow these guidelines when using the FICON port swapping feature:
• Port swapping is not supported for logical ports (PortChannels, FCIP links). Neither the old-port-number
• Port swapping is not supported between physical ports that are part of a PortChannel. Neither the
• Before performing a port swap, the Cisco NX-OS software performs a compatibility check. If the two
• Before performing a port swap, the Cisco NX-OS software performs a compatibility check to verify the
• If ports have default values (for some incompatible parameters), then a port swap operation is allowed
• Port tracking information is not included in port swapping. This information must be configured separately
Note The 32-port module guidelines also apply for port swapping configurations (Refer to the Cisco MDS 9000
Family NX-OS Interfaces Configuration Guide ).
nor the new-port-number can be a logical port.
old-port-number nor the new-port-number can be a physical port that is part of a PortChannel.
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.
extended BB_credits configuration.
and the ports retain their default values.
(refer to the Cisco MDS 9000 Family NX-OS Quality of Service Configuration Guide ).
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Cisco MDS 9000 Series Fabric Configuration Guide, Release 8.x
About Port Swapping
Automatically Saving the
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