90 Fabric OS Administrator’s Guide
53-1002745-02
Ports
3
Disabling a port
Use the following procedure to disable a port:
1. Connect to the switch and log in using an account with admin permissions.
2. Enter the appropriate command based on the current state of the port and on whether it is
necessary to specify a slot number:
• To disable a port that is enabled, enter the command portDisable portnumber or
portDisable slotnumber/portnumber. You can also use the -x option to enter the value in
hexadecimal if you prefer. See the Fabric OS Command Reference for more details on this
command.
• To disable a port that is persistently enabled, enter the command
portCfgPersistentDisable portnumber or portCfgPersistentDisable
slotnumber/portnumber.
Port decommissioning
Fabric OS 7.0.0 and later provides an automated mechanism to remove an E_Port or E_Port trunk
port from use. This feature identifies the target port and communicates the intention to
decommission the port to those systems within the fabric affected by the action. Each affected
system can agree or disagree with the action, and these responses are automatically collected
before a port is decommissioned.
All members of a trunk group must have an equal link cost value in order for any of the members to
be decommissioned. If any member of a trunk group does not have an equal cost, requests to
decommission a trunk member will fail and an error reminding the caller of this requirement is
produced.
The following restrictions apply to port decommissioning:
• The local switch and the remote switch on the other end of the E_Port must both be running
Fabric OS 7.0.0 or later.
• Port decommissioning is not supported on links configured for encryption or compression.
• Port decommissioning is not supported on ports with DWDM, CWDM, or TDM.
• Port decommissioning requires that the lossless feature is enabled on both the local switch
and the remote switch.
Use the portDecom [slot/]port command to begin the decommission process.
Setting port modes
Ports can be set to use one of three link operating modes: full duplex, half duplex, or autonegotiate,
subject to the following conditions and restrictions:
• Changing the link operating mode is not supported for all network interfaces or for all Ethernet
network interfaces. On the CP in a Brocade DCX, DCX-4S, DCX 8510-4, or DCX 8510-8, this
command supports eth0 and eth3 as interface parameters. On all other platforms, only eth0 is
supported.
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