CLI Reference Guide-R04

Chapter 11 | Interface Commands
Interface Configuration
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Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
◆ 1000BASE-T does not support forced mode. Auto-negotiation should always be
used to establish a connection over any 1000BASE-T port or trunk.
◆ The 10GBASE-SFP+ transceivers do not support auto-negotiation. Forced mode
should always be used to establish a connection over any 10GBASE-SFP port or
trunk.
◆ When auto-negotiation is enabled,
10
the switch will negotiate the best settings
for a link based on the capabilities command. When auto-negotiation is
disabled, you must manually specify the link attributes with the speed-duplex
and flowcontrol commands.
◆ A connection can only be enabled on a port in which a recognized transceiver
is inserted. Refer to the Quick Start Guide for a list of compliant transceivers.
Example
The following example configures port 10 to use auto-negotiation.
Console(config)#interface ethernet 1/10
Console(config-if)#negotiation
Console(config-if)#
Related Commands
capabilities (409)
speed-duplex (416)
flowcontrol (412)
shutdown This command disables an interface. To restart a disabled interface, use the no
form.
Syntax
[no] shutdown
Default Setting
All interfaces are enabled.
Command Mode
Interface Configuration (Ethernet, Port Channel)
10. Support for auto-negotiation depends on transceiver type, such as 1G SFP.