Data Center Bridging Exchange Protocol (Dcbx) - Dell C9000 Series Networking Configuration Manual

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PFC enabled or disabled

No bandwidth limit or no ETS processing

ETS uses the DCB MIB IEEE 802.1azd2.5.

Data Center Bridging Exchange Protocol (DCBx)

By default, the data center bridging exchange (DCBx) protocol is disabled; ETS is also disabled.

DCBx allows a switch to automatically discover DCB-enabled peers and exchange configuration information.

PFC and ETS use DCBx to exchange and negotiate parameters with peer devices. DCBx capabilities include:

Discovery of DCB capabilities on peer-device connections.

Determination of possible mismatch in DCB configuration on a peer link.

Configuration of a peer device over a DCB link.

DCBx requires the link layer discovery protocol (LLDP) to provide the path to exchange DCB parameters with

peer devices. Exchanged parameters are sent in organizationally specific TLVs in LLDP data units. For more

information, see

Link Layer Discovery Protocol

parameter exchange:

PFC parameters

PFC Configuration TLV and Application Priority Configuration TLV.

ETS parameters

ETS Configuration TLV and ETS Recommendation TLV.

(LLDP). The following LLDP TLVs are supported for DCB

Data Center Bridging (DCB)