MAXFRAME

Command

MAXFRAME -- Display / Set port MAXFRAME value.

Synopsis

MAX[FRAME] <port> [n]

Description

The MAXFRAME command is used to display and set the AX25 L2 MAXFRAME (window) value for the specified port. This is the maximum number of unacknowledged frames allowed before the link must stop and wait for an ack. The normal range is between 1 and 7, although maxframes of up to 127 are allowed in modulo-128 links.

If the second argument is ommitted, the current value is displayed.

If the setting is changed, the new setting remains in force until it is changed again, or until the router is restarted, in which case it returns to the default value specified in the port entry in the XROUTER.CFG file.

If the port PACLEN is set to 0, XRPi dynamicallys adapts MAXFRAME (and PACLEN) to the link conditions, to maximise throughput.

Example

MAX 2       - Display current maxframe setting for port 2
MAX 2 6     - Set maxframe for port 2 to 6.

Availability

MAXFRAME is a sysop-only command.