22.4.6 Configuring Flow Control

For the Switch, you can enable flow control for a specific port, and can disable flow control for all ports on the Switch. If flow control for all ports is disabled, port-specific flow control settings remain in a configuration file, but have no effect.

<Structure of this section>

(1) Configuring Per-Port Flow Control

Points to note: Determine flow control settings that do not conflict with the settings on the remote device.

Command examples

(config)# interface tengigabitethernet 1/0/27

(config-if)# shutdown

Shuts down the Ethernet interface.
(config-if)# flowcontrol send off

(config-if)# flowcontrol receive off

Stops the passing of pause packets between the switch and the remote device.
(config-if)# no shutdown

Releases the Ethernet interface from the shutdown status.

(2) Configuring flow control common to all ports

Points to note: The example below shows how to disable flow control for all ports on the switch.

Command examples

(config)# system flowcontrol off

Disables the passing of pause packets between the switch and the remote device through any port.
(config)# save

(config)# exit

Saves the settings and switches from configuration mode to administrator mode.
# restart vlan

Restarts the VLAN program. After the VLAN program has restarted, pause packets can neither be sent to nor received from the remote device through any port. All Ethernet interfaces are initialized again, and the ports that make up the VLAN temporarily cannot be used to send or receive data.

(3) Loose mode setting for flow control

Points to note: The example below shows how to set loose flow control mode.

Command examples

(config)# interface tengigabitethernet 1/0/25

(config-if)# shutdown

Shuts down the Ethernet interface.
(config-if)# flowcontrol send on loose

Sets the mode for sending pause packets to the remote device to loose mode.
(config-if)# no shutdown

Releases the Ethernet interface from the shutdown status.