Reference 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 Networking operating software 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 chapter includes the following sections:
● DCB Command
● PFC Commands
● ETS Commands
● DCBX Commands
Topics:
• DCB Command
•
PFC Commands
• ETS Commands
• DCBX Commands
• dcb-map
• dcb-map sfm all backplane all
• priority-pgid
• priority-group bandwidth pfc
• dcb-map linecard all backplane all
• dcb-policy buffer-threshold sfm all port-set all backplane all
• dcb pfc-shared-buffer-size
• dcb pfc-shared-buffer-size sfm all
• dcb-buffer-threshold
• priority
• show linecard port-set backplane all
• show sfm backplane all pfc buffer-threshold
• qos-policy-buffer
• dcb-policy buffer-threshold (Interface Configuration)
• dcb-policy buffer-threshold linecard all backplane all
• show qos dcb-buffer-threshold
• show hardware linecard buffer-stats-snapshot (With Polling and History)
• show running-config dcb-buffer-threshold
• dcb pfc-total-buffer-size
• dcb pfc-queues
• dcb <ets | pfc> enable
DCB Command
The following DCB command is supported on the Z9500 platform.
dcb-enable
Enable data center bridging.
Syntax
dcb enable[pfc-queues 1|4]
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Data Center Bridging (DCB) 447