Chapter 10
| Interface Commands
Interface Configuration
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Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
The description is displayed by the show interfaces status command and in the
running-configuration file. An example of the value which a network manager
might store in this object is the name of the manufacturer, and the product name.
Example
The following example adds a description to port 4.
Console(config)#interface ethernet 1/4
Console(config-if)#description RD-SW#3
Console(config-if)#
flowcontrol This command enables flow control. Use the no form to disable flow control.
Syntax
[no] flowcontrol
Default Setting
Disabled
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.
◆ Flow control can eliminate frame loss by “blocking” traffic from end stations or
segments connected directly to the switch when its buffers fill. When enabled,
back pressure is used for half-duplex operation and IEEE 802.3-2002 (formally
IEEE 802.3x) for full-duplex operation.
◆ To force flow control on or off (with the flowcontrol or no flowcontrol
command), use the no negotiation command to disable auto-negotiation on
the selected interface.
◆ When using the negotiation command to enable auto-negotiation, the optimal
settings will be determined by the capabilities command. To enable flow
control under auto-negotiation, “flowcontrol” must be included in the
capabilities list for any port
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