UUCP

[Gordon Brown_5]

Having problems communicating between two systems.

CU works fine.

uucico -r1 -sSYS -x9 works ok up to the point when the protocol starts - please see attachment for more details.

Thanks in advance.

Gordon

[Ross Zubritski]

Gordon,

In looking through your log, it appears that the connection is being established, and data is being tranferred. However, the connection for some reason is being dropped. This to me indicates a communication problem possibly at the line level. Are both modems "training" (negotiating) at the same speed, settings, etc.?

Just my two cents.

Regards.

RZ

[Gordon Brown_5]

Thanks Ross,

As I said cu will work fine all day but uucp stops after the protocol has been established.

Interestingly ppp exhibits the same problem.

The two modems are

US Robotics sportster
Multitech ZX

Link speed is 19200

Error correction has been disabled but it didn't make any difference.

G

[Jeff Schussele]

Hi Gordon,

Both MultiTech & US Robotics have proprietary command sets.
BUT they both also support & have the Hayes command set as well. I'd set both these modems to the Hayes mode & suspect that may mitigate the problem. US Robotics, particularly has trouble negotiating with non-USR modems when in it's own command mode.

Rgds,
Jeff

[Ron Kinner]

Seems to me if the modem connection were poor that it would fail before the g protocol took over. I would look at the

/usr/lib/uucp/Configuration

file on both machines.


From

http://osr5doc.ca.caldera.com:457/cgi-bin/man/man?Configuration+F

" The version of the `g' protocol implemented in SCO System V/386 Release 3.2 Version 4 (and earlier releases) used a fixed packet size of 64 bytes, and a fixed window size of 3, even though the specification for the `g' protocol allows different packet and window lengths to be selected. When communicating with such a `g' protocol host, the remote uucico may die if the correct packet and window sizes are not used in the modern uucico. (This limitation is common to many implementations of the UUCP `g' protocol under UNIX System V Release 3.2). "

Ron

[Gordon Brown_5]

Jeff,

The modems are both running in Hayes mode. And as stated cu works fine - I suspect it is something to do with packet sizes as per Ron's reply.

Ron,

Both systemes are running HP-UX 11i patched to the same level. HP-UX doesn't appear to support the Configuration file ( strings uucico reveals filenames being accessed and Configuartion isn't one of them)

So how do you force the PROTOCOL in HP-UX ?

G