Users Guide
Version Description
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.12.0 Introduced on the S4810.
8.3.16.0 Introduced on the MXL 10/40GbE Switch IO Module.
Usage Information
The default number of 802.1p priorities that you can enable for PFC is –2. The maximum number of 802.1p
priorities that you can enable for PFC is –4. Queues to which PFC priority trac is mapped are lossless by default.
Trac may be interrupted due to an interface ap (going down and coming up) when you recongure the lossless
queues for no-drop priorities.
The default number of lossless queues supported on the switch is two. The maximum number of lossless queues
supported on the system is 4.
A PFC peer must support the congured priority trac (as DCBX detects) to apply PFC.
show dcb
Displays the data center bridging status, the number of PFC-enabled ports, and the number of PFC-enabled queues.
Syntax
show dcb
Command Modes EXEC Privilege
Command History
This guide is platform-specic. For command information about other platforms, see the relevant Dell Networking
OS Command Line Reference Guide.
Version Description
9.8(1.0) Introduced on the Z9100–ON.
9.7(0.0) Introduced on the S6000-ON and Z9500.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.12.0 Introduced on the S4810.
8.3.16.0 Introduced on the MXL 10/40GbE Switch IO Module.
Usage Information Specify a stack-unit number on the Master switch in a stack.
Example
Dell# show dcb
stack-unit 1 port-set 0
DCB Status : Enabled
PFC Port Count : 56 (current), 56 (configured)
PFC Queue Count : 2 (current), 2 (configured)
Dell#
476 Data Center Bridging (DCB)