Enabling Energy Saving Features On An Ethernet Interface - HPE FlexFabric 5940 Series Configuration Manual

•
The Enabled and Disabled fields in other cells are possible negotiation results.
Make sure all interfaces that a data flow passes through have the same PFC configuration.
Table 1 PFC configurations and negotiation results
Local (right)
Peer (below)
enable
auto
Default
Configuration restrictions and guidelines
When you configure PFC, follow these restrictions and guidelines:
•
For IRF and other protocols to operate correctly, as a best practice, do not enable PFC for
802.1p priorities 0, 6, and 7.
•
To avoid packet loss, apply the same PFC configuration to all interfaces that the packets pass
through.
•
If you do not enable PFC on an interface, the interface can receive but cannot process PFC
pause frames. To make PFC take effect, you must enable PFC on both ends.
•
If you configure the flow control or flow-control receive enable command on a PFC-enabled
interface, the following rules apply:
The PFC configuration takes effect.
The configuration of the flow control or flow-control receive enable command is ignored.
The flow control or flow-control receive enable command takes effect on the interface
only when PFC is disabled on it.
Configuration procedure
To configure PFC on an Ethernet interface:
Step
Enter system view.
1.
Enter Ethernet interface
2.
view.
Enable PFC in auto mode or
3.
forcibly on the Ethernet
interface.
Enable PFC for 802.1p
4.
priorities.

Enabling energy saving features on an Ethernet interface

IMPORTANT:
Fiber ports do not support these features.
enable
Enabled
Enabled
Disabled
Command
system-view
interface interface-type
interface-number
priority-flow-control { auto |
enable }
priority-flow-control no-drop
dot1p dot1p-list
auto
Enabled.
•
Enabled if negotiation
succeeds.
•
Disabled if negotiation fails.
Disabled.
8
Default
Disabled
Disabled
Disabled
Remarks
N/A
N/A
By default, PFC is disabled.
By default, PFC is disabled for all
802.1p priorities.