Asymmetric Flow Control; Show Flowcontrol - NETGEAR M6100 Series Reference Manual

Asymmetric Flow Control

Note: Asymmetric Flow Control is not supported on Fast Ethernet platforms.
Note: If Asymmetric Flow Control is not supported on the platform, then only
symmetric, or no flow control, modes are configurable.
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
Note: The flowcontrol command is available if the platform supports
only the symmetric flow control feature.
Use this command to enable or disable the symmetric flow control on the switch.
Default Flow control is disabled.
Format
flowcontrol
Mode Global Config
no flowcontrol
This command disables the symmetric flow control.
Format
no flowcontrol
Mode Global Config

show flowcontrol

Use this command to display the IEEE 802.3 Annex 31B flow control settings and status for a
specific interface or all interfaces. The command also displays 802.3 Tx and Rx pause
counts. Priority Flow Control frames counts are not displayed. If the port is enabled for priority
flow control, operational flow control status is displayed as Inactive. Operational flow control
status for chassis ports is always displayed as N/A.
M6100 Series Switches
Switching Commands
384