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- Path: sparky!uunet!UB.com!pacbell.com!ames!olivea!sgigate!sgi!rhyolite!vjs
- From: vjs@rhyolite.wpd.sgi.com (Vernon Schryver)
- Newsgroups: comp.sys.sgi.admin
- Subject: Re: SLIP - (1)hangup and (2)"212" Dialer
- Keywords: SLIP Admin
- Message-ID: <veq4p8k@rhyolite.wpd.sgi.com>
- Date: 28 Jan 93 16:32:50 GMT
- References: <3330@contex.contex.com>
- Organization: Silicon Graphics, Inc. Mountain View, CA
- Lines: 44
-
- 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
-