Configuring Pfc Parameters; Dcbx Configuration Examples; Example: Configuring Dcbx - H3C S6850 Series Configuration Manual

Configuring PFC parameters

About PFC parameters
To prevent packets with an 802.1p priority value from being dropped, enable PFC for the 802.1p
priority value. This feature reduces the sending rate of packets carrying this priority when network
congestion occurs.
The device uses PFC parameters to negotiate with the server adapter and to enable PFC for the
specified 802.1p priorities on the server adapter.
For more information about PFC commands, see Interface Command Reference.
Procedure
1. Enter system view.
system-view
2. Enter Layer 2 Ethernet interface view.
interface interface-type interface-number
3. Enable PFC in auto mode on the Ethernet interface.
priority-flow-control auto
By default, PFC is disabled.
To advertise the PFC data, you must enable PFC in auto mode.
4. Enable PFC for the specified 802.1p priorities.
priority-flow-control no-drop dot1p dot1p-list
By default, PFC is disabled for all 802.1p priorities.

DCBX configuration examples

Example: Configuring DCBX

Network configuration
As shown in
adapter of the data center server (DC server).
Configure Switch A to implement lossless FCoE and FIP frame transmission to DC server.
NOTE:
In this example, both Switch A and the DC server support DCBX Rev 1.01.
Figure 8 Network diagram
Procedure
1. Enable LLDP and DCBX TLV advertising:
Figure 8, Twenty-FiveGigE 1/0/1 of the access switch (Switch A) connects to the FCoE
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