FRACK

Command

FRACK -- Display / Set FRACK for a port.

Synopsis

FRACK <port> [msec]

Description

Displays the current FRACK (AX25 level 2 T1 timer) setting for the specified port, or allows it to be changed.

If the second argument is ommitted, the current value is displayed, otherwise the value in millseconds is used.

The new setting overrides the value specified in the CFG file, and remains in force until changed or the next restart.

Examples

FRACK 2          - Display port 2 frack setting
FRACK 2 6000     - Set port 2 frack to 6 seconds

Notes

A typical FRACK setting for 1200 baud is 7000 (7 secs), and specifies how long AX25 will wait for a level 2 ack before requesting confirmation. Setting this figure too low is antisocial, achieves nothing, and could result in the link retrying out.

However, on AXUDP links 7 secs is excessive, and a figure more like 2000 (2 secs) should be used.

FRACK=n may be used within PORT definition blocks in XROUTER.CFG to specify the default setting for a port.

Availability

Sysop-only.