Brocade Fabric OS Administrators Guide (Supporting Fabric OS v7.3.0) - Manual (Page 76)

Example of setting the port mode to full autonegotiate
The following example sets the mode for eth3 to autonegotiate, and permits
both full and half duplex modes to be selected at both 10 and 100 Mbps. Note
that the caution shown in this example is not displayed when the command is
entered using the serial console port.
switch:admin> ifmodeset eth3
Exercise care when using this command. Forcing the link to an operating mode not
supported by the network equipment to which it is attached may result in an
inability to communicate with the system through its ethernet interface.
It is recommended that you only use this command from the serial console port.
Are you sure you really want to do this? (yes, y, no, n): [no] y
Proceed with caution.
Auto-negotiate (yes, y, no, n): [no] y
Advertise 100 Mbps / Full Duplex (yes, y, no, n): [yes] y
Advertise 100 Mbps / Half Duplex (yes, y, no, n): [yes] y
Advertise 10 Mbps / Full Duplex (yes, y, no, n): [yes] y
Advertise 10 Mbps / Half Duplex (yes, y, no, n): [yes] y
Committing configuration...done.
Example of setting the port mode to 10 Mbps half duplex operation
The following example forces the link for the eth0 interface from autonegotiation
to 10 Mbps half-duplex operation:
switch:admin> ifmodeset eth0
Auto-negotiate (yes, y, no, n): [yes] n
Force 100 Mbps / Full Duplex (yes, y, no, n): [no] n
Force 100 Mbps / Half Duplex (yes, y, no, n): [no] n
Force 10 Mbps / Full Duplex (yes, y, no, n): [no] n
Force 10 Mbps / Half Duplex (yes, y, no, n): [no] y
Committing configuration...done.
Setting port speeds
Use the following procedure to set port speeds.
1. Connect to the switch and log in using an account with admin permissions.
2. Enter the portCfgSpeed command.
The following example sets the speed for port 3 on slot 2 to 4 Gbps:
switch:admin> portcfgspeed 2/3 4
The following example sets the speed for port 3 on slot 2 to autonegotiate:
switch:admin> portcfgspeed 2/3 0
Setting all ports on a switch to the same speed
Use the following procedure to set all ports on a switch to the same speed.
1. Connect to the switch and log in using an account with admin permissions.
2. Enter the switchCfgSpeed command.
If the specified speed is not supported on a particular port or blade, then that port or blade is
skipped and the speed is not changed.
Setting port speeds
76 Fabric OS Administrators Guide
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