CLI Guide

Version Description
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 traffic is mapped are lossless by default. Traffic may be
interrupted due to an interface flap (going down and coming up) when you
reconfigure 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 configured priority traffic (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-specific. 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(conf)#show dcb
DCB Status: Enabled, PFC Queue Count: 4
stack-unit Total Buffer PFC Total Buffer PFC Shared Buffer PFC Available Buffer
PP (KB) (KB) (KB) (KB)
----------------------------------------------------------------------------------
1 0.0 4096 3664 208 2574
1 0.1 4096 3664 208 2574
1 0.2 4096 3664 208 3180
1 0.3 4096 3664 208 3180
Data Center Bridging (DCB)
493