SMC Networks TIGERSWITCH 10/100 User Manual
Page 237
I
NTERFACE
C
OMMANDS
3-95
Command Usage
• 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 802.3x 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
• 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 (3-92)
capabilities (flowcontrol, symmetric) (3-93)
Console(config)#interface ethernet 1/5
Console(config-if)#flowcontrol
Console(config-if)#no negotiation
Console(config-if)#