Ifmodeset - Brocade Communications Systems Brocade 8/12c Command Reference Manual

ifModeSet

Sets the link operating mode for a network interface.
SYNOPSIS
ifmodeset ["interface"]
DESCRIPTION
Use this command to set the link operating mode for a network interface.
An operating mode is confirmed with a y or yes at the prompt. If the operating mode selected differs from
the current mode, the change is saved and the command exits.
Changing the link mode is not supported for all network interfaces or for all Ethernet network interfaces.
On the CP of a Brocade DCX or DCX-S4, this command supports eth0 and eth3 as interface
parameters. On all other platforms, only eth0 is supported.
When selecting autonegotiation, you can choose the specific link operating modes that are advertised to
the link partner. At least one common link operating mode must be advertised by both sides of the link.
When forcing the link operating mode, both sides of the link must be forced to the same mode. The link
does not work reliably if one side is set to autonegotiate and the other side is set to forced mode.
Exercise care when using this command. Forcing the link to an operating mode not supported by the
network equipment to which it is attached might result in an inability to communicate with the system
through its Ethernet interface. It is recommended that this command be used only from the serial console
port. When used through an interface other than the serial console port, the command displays a warning
message and prompts for verification before continuing. This warning is not displayed and you are not
prompted when the command is used through the serial console port.
For dual-CP systems, the ifModeSet command affects only the CP you are currently logged in to. To set
the link operating mode on the active CP, you must issue this command on the active CP; to set the link
operating mode on the standby CP, you must issue this command on the standby CP. During failover, the
link operating mode is retained separately for each CP, because the physical links might be set to
operate in different modes.
NOTES
The execution of this command is subject to Virtual Fabric or Admin Domain restrictions that may be in
place. Refer to Chapter 1, "Using Fabric OS Commands" and Appendix A, "Command Availability" for
details.
OPERANDS
This command has the following operand:
"interface"
EXAMPLES
To advertise all modes of operation, when not entering this command through the serial console port,
follow this scenario for the ifModeSet command:
Fabric OS Command Reference
53-1001764-01
Specify the name of the interface, optionally enclosed in double quotation marks.
When issued on a Brocade DCX or a DCX-S4 CP, valid interfaces are eth0 and
eth3. On all other platforms, only eth0 is supported.
switch:admin> ifmodeset eth0
Exercise care when using this command.
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
ifModeSet
Forcing the link to
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