Configuring, Modifying, and Monitoring the Unit

Setting the flow control

Ports are compliant to flow control specifications 802.3x or back-pressure.

You can set a port to perform flow control only if this port is in full duplex mode otherwise back- pressure is applied to control the incoming flow of data.

When the port is configured to do 802.3z flow control the switching engine sends a continuous flow of idle frames to avoid dead locks.

If the port applies back-pressure the mechanism is slightly different in the sense that instead of sending idle frames the switching engine sends a collision signal.

get-fctrl

The get-fctrlcommand displays the status of the flow control function.

get-fctrl <database> <port-number>

opt.[arg #0] database type - either {runnvramall}; default : run

opt.[arg #1] port index in format <dport>;default: all get-fctrl nvram

SYS_console>get-fctrl ?

Example

 

get-fctrl

gets the port

flow control request: enable or disable

 

opt.[arg #0]

database type - either {runnvramall}; default : run

 

opt.[arg #1]

port number -

1..25; default : all

 

SYS_console>

 

 

 

 

 

 

set-fctrl

 

 

The set-fctrlcommand sets a port’s flow control mode.

SYS_console>set-fctrl ?

set-fctrl sets the port flow control: enable or disable

[arg #0] database type - either {runnvramall}

[arg #1] port number - 1..25

opt.[arg #2] enter either {enabledisable}; default : enable

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IBM NH2025-10 manual Setting the flow control, Get-fctrl, Set-fctrl

NH2025-10 specifications

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