symmetrical-flow-control enable
SFC is globally disabled.
Global configuration mode
The
no form of this restores the default flow-control settings.
Configuring the
symmetrical-flow-control enable command enables SFC globally for priorities 0-4 by default and optionally for all
priorities (0-7)
By default, the system runs in tail-drop mode, with all ports honoring 802.3x flow
control and disabling 802.3x transmit. The
symmetrical-flow-control enable command enables transmission of 802.3x pause frames.
Configuring the
symmetrical-flow-control enable command changes priority-to-PG mapping.
You cannot configure the
symmetrical-flow-control enable command if the
priority-flow-control command is enabled.
If the
symmetrical-flow-control enable command is not enabled, you cannot configure the
flow-control generate-only or the
flow-control both commands in interface configuration mode.
The following example shows how to enable all priorities to send the IEEE 802.3x pause:
Device(config)# symmetrical-flow-control enable all
The following example shows how to enable SFC for Generate-only mode:
Device(config)# symmetrical-flow-control enable Device(config)# flow-control generate-only
| Release version | Command history |
|---|---|
| 08.0.10 | This command was introduced. |