Allied Telesis AT-S62 - Manual (Page 104)

Chapter 6: Port Parameters
Section I: Basic Operations 104
When a switch port needs to stop a half-duplex end node from
transmitting data, it forces a collision on the data link, which stops
the end node. Once the port is ready to receive data again, it stops
forcing collisions.
The default setting for backpressure on a switch port is disabled.
Selecting this option displays the Back Pressure menu shown in
Figure 25.
Figure 25 Back Pressure Menu
The options on the Back Pressure menu are described below:
1 - Back Pressure
Enables and disables backpressure on a port. Possible values are:
Disabled - The port will not use backpressure. This is the default
setting.
Enabled - The port will use backpressure.
2 - Back Pressure Cell Limit
Specifies the number of cells. A cell represents 64 bytes. The range
is 1 to 57,344 cells. The default is 8192.
Note
For an explanation of the L - Rate Limit menu option, refer to Setting
the Rate Limit on page 106.
The last parameters on the Port Configuration menu are:
D - Set Default Port Configuration
Resets all port settings to the default values.
F - Force Renegotiation
If the port is already operating in Auto-Negotiation, this options
prompts the port to Auto-Negotiate again with the end node. This
can be helpful if you believe that a port and end node are not
Allied Telesyn Ethernet Switch AT-8524M - AT-S62
Production Switch
User: Manager 11:20:02 02-Jan-2004
Back Pressure
Configuring Port 11
1 - Back Pressure ................. Disabled
2 - Back Pressure Cell Limit ...... 8192
R - Return to Previous Menu
Enter your selection?