36 Brocade ICX 6650 Administration Guide
53-1002600-01
Basic port parameter configuration
2
To disable flow control, enter the no flow-control command.
Brocade(config)# no flow-control
To turn the feature back on, enter the flow-control command.
Brocade(config)# flow-control
Syntax: [no] flow-control
NOTE
For optimal link operation, link ports on devices that do not support 803.3u must be configured with
like parameters, such as speed (10,100,1000), duplex (half, full), MDI/MDIX, and Flow Control.
Negotiation and advertisement of flow control
By default, when flow control is enabled globally and auto-negotiation is ON, flow control is enabled
and advertised on 10/100/1000M ports. If auto-negotiation is OFF or if the port speed was
configured manually, then flow control is not negotiated with or advertised to the peer. For details
about auto-negotiation, refer to “Port speed and duplex mode modification” on page32.
To disable flow control capability on a port, enter the following commands.
Brocade(config)# interface ethernet 1/1/1
Brocade(config-if-e10000-1/1/1)# no flow-control
To enable flow control negotiation, enter the following commands.
Brocade(config)# interface ethernet 1/1/1
Brocade(config-if-e10000-1/1/1)# flow-control neg-on
Error - This command is not supported for fiber ports and gbic copper optics
The error message is displayed because auto-negotiation of flow control is not supported on 10
Gbps and 40 Gbps ports.
Syntax: [no] flow-control [neg-on]
•flow-control [default] - Enable flow control, flow control negotiation, and advertise flow control
•no flow-control neg-on - Disable flow control negotiation
•no flow-control - Disable flow control, flow control negotiation, and advertising of flow control
After flow control negotiation is enabled using the flow-control neg-on command option, flow
control is enabled or disabled depending on the peer advertisement.
Commands may be entered in IF (single port) or MIF (multiple ports at once) mode.
Example
Brocade(config)# interface ethernet 1/1/1
Brocade(config-if-e10000-1/1/1)# no flow-control
This command disables flow control on port 1/1/1.
Brocade(config)# interface ethernet 1/1/1 to 1/1/2
Brocade(config-mif-1/1/1-1/1/2)# no flow-control
This command disables flow control on ports 1/1/1 to 1/1/2.