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- Newsgroups: comp.sys.apollo
- Path: sparky!uunet!cs.utexas.edu!sun-barr!ames!xn.ll.mit.edu!ll.mit.edu!rocco
- From: rocco@ll.mit.edu (A. Gregory Rocco Jr.)
- Subject: Unable to open a stream to the SIO line, SLIP, hardware flow control
- Message-ID: <1992Aug26.191122.4569@ll.mit.edu>
- Originator: rocco@ll.mit.edu (A. Gregory Rocco Jr.)
- Keywords: SIO, SLIP
- Sender: news@ll.mit.edu
- Organization: MIT Lincoln Lab; Lexington Ma
- Date: Wed, 26 Aug 92 19:11:22 GMT
- Lines: 47
-
-
- In article <DISSER.92Aug21075108@metaphor.engin.umich.edu>
- disser@engin.umich.edu (David Disser) writes:
-
- > I've got a DN3000 I want to hook up via SLIP at 14.4kbps. I can't even get
- > started. I've got the modem hooked up, and I've got what I think are good
- > tctl settings, but when I try to use emt and go into remote mode, I get
- >
- > ?(emt) Unble to open a stream to the SIO line (/dev/sio1).
- > - requested object is in use (stream manager/IOS)
-
- There is a good chance that the line is in use because the
- server_process_manager is using it. If you look in /dev (generally linked
- to `node_data/dev) you will probably find a symbolic link which looks
- something like:
- //hamerkop/sys/node_data/dev/sio.spm -> sio1
-
- This link controls which sio line if any spm talks to. You do not need to
- have it talk to any sio line at all. To fix the problem change the link to
- be something like:
- //kingfisher/sys/node_data/dev/sio.spm -> null
-
- If you are logged into the machine that has the sio line, the following
- Aegis command can be used accomplish this:
- /com/crl -r /dev/sio.spm null
-
- Once you have changed the link you should reboot the node so that spm will be
- restarted, making the change take effect.
-
-
- I have a DN4000 at home and am using US Robotics Courier V.32BIS modem to
- talk to my systems back at work. I am using the vt100 emulator and
- kermit when I am using the DN4000 as a terminal. I have the DN4000 and the
- modem talking to each other at 19.2 Kbaud and connect to my systems at work
- at 9600 baud with some compression. I have not been loosing any data since
- I turned on hardware flow control. From the LEDs on an RS-232 breakout box,
- I can see that the hardware flow control is working.
-
- I am planning on setting up a SLIP connection but am having some trouble and
- have not had the time to resolve it yet. In one configuration the connection
- works long enough to pass a list of routes to the routed running on my
- machine at home and then the SLIP connection hangs.
-
- Greg Rocco
- MIT Lincoln Lab
- Lexington Ma USA
- rocco@ll.mit.edu
-