I
NTERFACE
C
OMMANDS
4-149
• 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
• Avoid using flow control on a port connected to a hub unless it is
actually required to solve a problem. Otherwise back pressure
jamming signals may degrade overall performance for the segment
attached to the hub.
Example
The following example enables flow control on port 5.
Related Commands
negotiation (4-146)
capabilities (flowcontrol, symmetric) (4-147)
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)
Console(config)#interface ethernet 1/5
Console(config-if)#flowcontrol
Console(config-if)#no negotiation
Console(config-if)#
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