Visara CNA-8000 Installation - Manual (Page 94)

Chapter 7. SDLC Gateway
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Frame Size: This option determines the maximum frame size that will be sent by the
CNA-8000 to the remote platform, and ranges from 265-4105. Common values are:
 265: This is the default value and the smallest frame size that is allowed. All
SDLC platforms are required to support a minimum frame size of 265. Any 3274
or 3276 compatible platform will support this value.
 521: This is the commonly supported value for a 3174 compatible platform.
 4105: This value is supported by some platforms (such as a Visara 1174 HSC
card).
Configure a value that is compatible with the type of platform that is connected. Setting a
larger value than that which is supported by the remote platform will result in receive
overrun errors on the remote platform. If the remote platform is unknown, use the default
value initially.
Initial Status: This option determines whether the CNA-8000 should attempt to poll the
SDLC line whenever it is powered up. If set to Active, the CNA-8000 will attempt to poll
the drop at the configured interval anytime that the CNA-8000 is up. If set to Inactive, the
CNA-8000 will not attempt to bring up the drop.
Button Definitions
Return: Pressing this button will return you back to the ‘Configure SDLC Line’ panel.
Update: Selecting the Update button will save the current values. If there is a value in
error, an error message will display to the right of the buttons to inform you of the
problem.
Delete: Pressing the Delete button will cause a new panel with the currently defined
Drops listed, to allow you to delete one or more of them. Refer to the Deleting SDLC
Drops section below.
Add: Pressing this button will cause the fields to display their defaults and display the
next drop number. Make the configuration changes needed for the new drop, and press
the Update button to save the information.