H3C Technologies H3C S5560 Series Switches - Manual (Page 23)

9
flow-control
priority-flo
w-control
enable
priority-flow-contr
ol no-drop dot1p
Remarks
Configured Configurable Unconfigurable
• On a port configured with the flow-control
command, you can enable PFC, but you
cannot enable PFC for specific 802.1p
priorities.
• Enabling both generic flow control and PFC on
a port disables the port from sending common
or PFC pause frames to inform the peer of
congestion conditions. However, the port can
still handle common and PFC pause frames
from the peer.
Enabling energy saving features on an Ethernet interface
Enabling auto power-down on an Ethernet interface
IMPORTANT:
Fiber ports do not support this feature.
When the auto power-down feature is enabled on an interface and the interface has been down for a
certain period of time, both of the following events occur:
• The switch automatically stops supplying power to the interface.
• The interface enters the power save mode.
The time period depends on the chip specifications and is not configurable.
When the interface comes up, both of the following events occur:
• The switch automatically restores power supply to the interface.
• The interface enters its normal state.
To enable auto power-down on an Ethernet interface:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter Ethernet interface view. interface interface-type
interface-number
N/A
3. Enable auto power-down. port auto-power-down
By default, auto power-down is
disabled.
Enabling EEE energy saving for Ethernet interfaces in up state
IMPORTANT:
•
Fiber ports do not support this feature.
• Ports that operate at 1000 Mbps on an LSWM2XGT8PM interface card do not support this feature.
With the Energy Efficient Ethernet (EEE) energy saving feature, a link-up port enters the low power state
if it has not received any packet for a certain period of time. The time period depends on the chip