Edge-Core ECS4110-28T Management Manual page 1000

| Interface Commands
C 27
HAPTER
Interface Configuration
flowcontrol
This command enables flow control. Use the no form to disable flow
control.
S
YNTAX
[no] flowcontrol
D S
EFAULT ETTING
Disabled
C M
OMMAND ODE
Interface Configuration (Ethernet, Port Channel)
C U
OMMAND SAGE
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
◆
optimal settings will be determined by the
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 C
ELATED OMMANDS
negotiation (1001)
capabilities (flowcontrol, symmetric) (997)
– 1000 –
command to enable auto-negotiation, the
capabilities command. To