Reference Guide

Command Modes CONFIGURATION
Command
History
Version Description
9.7(0.0) Introduced on the Z9500.
Usage
Information
The dcb-map linecard all backplane all command overwrites any previous DCB maps applied
to backplane
dcb-policy buffer-threshold sfm all port-set all
backplane all
Assign the DCB policy to all sfm and backplane ports interfaces. This setting takes precedence over the global buffer-threshold
interface configuration.
Syntax
dcb-policy buffer-threshold sfm all port-set all backplane all <dcb-policy-
name>
Parameters
buffer-threshold
Configure the profile name for the DCB buffer threshold
Defaults None.
Command Modes GLOBAL CONFIGURATION
Command
History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.7(0.0) Introduced on the Z9500.
Usage
Information
You can configure dcb-policy on all sfm and backplane ports and assign dcb-policy to the backplane ports.
Example
dcb-policy buffer-threshold sfm all backplane all test
dcb pfc-shared-buffer-size
Configure the maximum amount of shared buffer size for PFC packets in kilobytes.
You must configure the shared buffer size to be less than the total PFC buffer size. If the buffer size and DCB buffer threshold
settings are applied on one or more ports, a validation is performed to determine whether following condition is satisfied:
Shared-pfc-buffer-size <= (Total-pfc-buffer-size - Σpfc priority <> buffer-size on each port, priority).
If the preceding condition is not satisfied by the shared PFC buffer size value, the configuration is not saved and a system
logging message is generated stating that the shared buffer size that you attempt to specify cannot be configured because of
the existing total buffer space on the system being lower than the shared buffer size. You must either enter a smaller value for
the shared buffer size or increase the total buffer size appropriately by using the dcb pfc-total- buffer-size
command.
Syntax
dcb pfc-shared-buffer-size <value> linecard <0-2/all> port-set <0-3/all>
Parameters
KB Enter a number in the range from 0 to 11210.
Default 2496KB
Command Modes CONFIGURATION mode
464 Data Center Bridging (DCB)