LevelOne GTL-2691 - Manual (Page 1001)

C HAPTER 31 | Interface Commands
Interface Configuration
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E XAMPLE
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.
S YNTAX
[no] flowcontrol
D EFAULT S ETTING
Disabled
C OMMAND M ODE
Interface Configuration (Ethernet, Port Channel)
C OMMAND U SAGE
◆ 1000BASE-T and 10GBASE-T do not support forced mode. Auto-
negotiation should always be used to establish a connection over any
1000BASE-T and 10GBASE-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
E XAMPLE
The following example enables flow control on port 5.
Console(config)#interface ethernet 1/5
Console(config-if)#flowcontrol
Console(config-if)#no negotiation
Console(config-if)#
R ELATED C OMMANDS
negotiation (1002)
capabilities (flowcontrol, symmetric) ( 999 )