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Dell EMC SmartFabric OS10 User Guide Release 10.5.1

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pfc-shared-headroom-buffer-size

Configures the shared headroom size for absorbing the packets after pause frames generate.

NOTE: This command is available only on the following platforms:
  • S5212F-ON, S5224F-ON, S5232F-ON, S5248F-ON, S5296F-ON
  • Z9100-ON
  • Z9264F-ON
Syntax
pfc-shared-headroom-buffer-size headroom-buffer-size
Parameters
headroom-buffer-size — Enter the size of the priority flow-control headroom buffer in KB, from 1 to 3399.
Default
1024 KB
Command Mode
SYSTEM-QOS
Usage Information
All PFC-enabled priority groups can use the shared headroom space. Headroom is the buffer space that absorbs the incoming packets after the PFC frames reach the sender. After the threshold is reached, PFC frames generate towards the sender. The packets sent by the sender after the PFC frames generate are absorbed into the Headroom buffer. The no version of this command returns the value to the default.
Example
OS10(conf-sys-qos)# pfc-shared-headroom-buffer-size 2000
Supported Releases
10.4.0E(R1) or later

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