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.
The Dell EMC Networking OS commands for data center bridging features include 802.1Qbb priority-based flow control (PFC),
802.1Qaz enhanced transmission selection (ETS), and the data center bridging exchange (DCBX) protocol.
This section includes the following:
● DCB Command
● PFC Commands
● ETS Commands
● DCBX Commands
Topics:
• DCB Command
• PFC Commands
• ETS Commands
• DCBX Commands
• dcb-map
• priority-pgid
• pfc mode on
• priority-group bandwidth pfc
• dcb-map stack-unit all stack-ports all
• show qos dcb-map
• dcb pfc-shared-buffer-size
• dcb-buffer-threshold
• priority
• qos-policy-buffer
• dcb-policy buffer-threshold (Interface Configuration)
• dcb-policy buffer-threshold (Global Configuration)
• show qos dcb-buffer-threshold
• dcb pfc-total-buffer-size
• show running-config dcb-buffer-threshold
• service-class buffer shared-threshold-weight
• dcb pfc-queues
• dcb {ets | pfc} enable
DCB Command
The following DCB command is supported on the Dell EMC Networking OS.
dcb-enable
Enable data center bridging.
Syntax
dcb enable[pfc-queues 1–4]
To disable DCB, use the no dcb enable command.
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Data Center Bridging (DCB) 491