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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.
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
Command
History
Version Description
9.7(0.0) Introduced on the Z9500.
Usage
Information
Configure the maximum shared buffer available for PFC traffic. You can choose to increase or decrease
the shared buffer that is allocated in the system by default. Configure the shared buffer size 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: If the shared buffer
size is more than the total PFC buffer size value, the configuration is not saved and a system logging
message is generated as follows:
Shared-pfc-buffer-size <= (Total-pfc-buffer-size — Σpfc priority <> buffer-size on each port, priority).
Dell(conf)#dcb pfc-shared-buffer-size 2000 %ERROR: pfc shared buffer size
configured cannot accommodate existing buffer requirement in the system.
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.
Example
Dell(conf)#dcb pfc-shared-buffer-size 5000
516 Data Center Bridging (DCB)