Administrator Guide

Data Center Bridging (DCB)

Data center bridging (DCB) refers to a set of IEEE Ethernet enhancements that provide data centers with a

single, robust, converged network to support multiple traffic types, including local area network (LAN),

server, and storage traffic. DCB features are auto-configured in standalone mode and supported in

stacking mode.

The Dell Networking OS commands for DCB features include 802.1Qbb priority-based flow control

(PFC), 802.1Qaz enhanced transmission selection (ETS), and the data center bridging exchange (DCBX)

protocol.

CLI commands for individual DCB features are as follows:

DCB commands

• dcb enable auto-detect on-next-reload

• dcb-map

• dcb-policy input stack-unit stack-ports all

PFC Commands

• clear pfc counters

• show interface pfc

• show interface pfc statistics

• show stack-unit stack-ports pfc details

ETS Commands

• clear ets counters

• show interface ets

• show stack-unit stack-ports ets details

• qos-policy-output ets

DCBX Commands

• dcbx version

• show dcb

• show interface dcbx detail

Data Center Bridging (DCB)