🚀 go-pugleaf

In article <3330@contex.contex.com>, james@sam.contex.com (James McQueston) writes:
> I would like to have my remote (incoming) SLIP die when its modem loses
> DCD....

SLIP does not work well unless it does die when the modem does.  That's
why one should always use /dev/tty[mf]* for SLIP lines.  With a
reasonable (i.e. fast) modem, you should use /dev/ttyf* to get hardware
handshaking as well and "modem control."

Just change the line in /etc/inittab, and ensure that the cable is a
good, >=7 wire cable, and that the modem is programmed correctly.
Check /usr/lib/uucp/fix-*.  If you are already using /dev/ttyf*,
then it is likely that the modem has been incorrectly programmed to
keep DCD true at all times.


> When writing a /usr/lib/uucp/Devices line for outgoing SLIP, I find that
> it will not work on /dev/ttyf1 unless the "built-in" dialer-token pair
> "212 x" is given.  Of all the pages and pages of documentation on SLIP
> and UUCP in the IRIX Site Admin. Guide and IRIX Network Admin. Guide,
> the only reference to this is in the latter on page 7-4, where it says
> that
> 	The correct format for a line appropriate for SLIP in
> 	/usr/lib/uucp/Devices is:
> 	    ACUSLIP device null speed 212 x dialer
> 
> It never explains why.  The man page for SLIP never mentions this fact.
> And if you don't do it, the error you get from SLIP -ddd is a timeout
> when trying to access the device.
> 
> Can someone explain what the "212" dialer is, what the "x" token for it means,
> and why SLIP breaks when you don't use it.  Furthur, can someone at SGI
> add this explanation to the man page for SLIP, and convince the Documentation
> people to explain this a little more in section 7.2.2 of the Network Admin.
> Guide?


There is no short, interesting, and useful description of why that is
necessary.  It works if you do it that way, and most other ways do not
work.  There are no useful changes that can be made in that string of
gunk.  If you really care why, review the source for HDB UUCP.


Vernon Schryver,  vjs@sgi.com