H3C S12500X-AF Series, Configuration Manual

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NOTE:
H3C devices support only the remote configuration feature.
Figure 66 DCBX application scenario
DCBX enables lossless packet transmission on DCE networks.
As shown in Figure 66 , DCBX applies to an FCoE-based data center network, and operates on an
access switch. DCBX enables the switch to control the server or storage adapter, and simplifies the
configuration and guarantees configuration consistency. DCBX extends LLDP by using the IEEE
802.1 organizationally specific TLVs (DCBX TLVs) to transmit DCBX data, including:
•
In DCBX Rev 1.00 and DCBX Rev 1.01:
{
Application Protocol (APP).
{
Enhanced Transmission Selection (ETS).
{
Priority-based Flow Control (PFC).
•
In IEEE Std 802.1Qaz-2011:
{
ETS Configuration.
{
ETS Recommendation.
{
PFC.
{
APP.
H3C devices can send these types of DCBX information to a server or storage adapter supporting
FCoE. However, H3C devices cannot accept these types of DCBX information.
DCBX configuration task list
Tasks at a glance
(Required.) Enabling LLDP and DCBX TLV advertising
(Required.) Setting the DCBX version
(Required.) Configuring ETS parameters
•
Configuring the 802.1p-to-local priority mapping
•
Configuring group-based WRR queuing
(Required.) Configuring PFC parameters
Enabling LLDP and DCBX TLV advertising
To enable the device to advertise APP, ETS, and PFC data through an interface, perform the
following tasks:
•
Enable LLDP globally.
•
Enable LLDP and DCBX TLV advertising on the interface.