Command Reference Guide

Asymmetric Flow Control
CLI Command Reference
September 2014 Page 322
HP Moonshot Switch Module CLI Command Reference
Asymmetric Flow Control
When in asymmetric flow control mode, the switch responds to PAUSE frames received from a peer by stopping
packet transmission, but the switch does not initiate MAC control PAUSE frames.
When you configure the switch in asymmetric flow control (or no flow control mode), the device is placed in
egress drop mode. Egress drop mode maximizes the throughput of the system at the expense of packet loss in
a heavily congested system, and this mode avoids head-of-line blocking.
flowcontrol {symmetric|asymmetric}
Use this command to enable or disable the symmetric or asymmetric flow control on the switch. Asymmetric
here means that Tx Pause can never be enabled. Only Rx Pause can be enabled.
no flowcontrol {symmetric|asymmetric}
Use the no form of this command to disable symmetric or asymmetric flow control.
Note: Asymmetric Flow Control can only be configured globally for all ports.
Default Flow control is disabled.
Format
flowcontrol {symmetric|asymmetric}
Mode Global Config
Format
no flowcontrol {symmetric|asymmetric}
Mode Global Config