fwp1@CC.MsState.Edu (Frank Peters) (01/13/91)
Hello,
We have for many months now been running slip between a Cisco Terminal
Server and various systems (Macs, PCs, Suns) using 19,200 Voice Data
Multiplexer units sold by our local telecommunications office.
We recently got two Telebit 2500 Modems and are attempting to use
these for slip connections.
The two modems connect fine at 19200 baud using PEP protocol.
Everything about the connection seems fine. The settings on the
Mac/PC and and on the Cisco end are identical to the working VDM
links.
When we invoke slip mode, however, the two ends seem unable to
communicate. The lights indicate that data is being sent but no
response is being received from the Cisco end. Eventually the
terminal server concludes that the link is dead and breaks the
connection.
Has anybody else seen this problem? Is there something about PEP that
makes slip impractical?
If anyone has T2500 working as slip modems please let me know. I'd
like to try to figure out what register settings might make this work.
Thanks,
FWP
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Frank Peters Internet: fwp1@CC.MsState.Edu Bitnet: FWP1@MsState
Phone: (601)325-2942 FAX: (601)325-8921vjs@rhyolite.wpd.sgi.com (Vernon Schryver) (01/15/91)
In article <FWP1.91Jan12192741@Jester.CC.MsState.Edu>, fwp1@CC.MsState.Edu (Frank Peters) writes: > .... > When we invoke slip mode, however, the two ends seem unable to > communicate.... One thing that can cause this is leaving UUCP or other protocol spoofing turned on in the TB's. The "control characters" in TCP/IP headers (and data) tend to confusing things. If this is the problem, setting S111=0 on at least one of the T2500's will fix it. Of course, one must avoid XON/XOFF flow control for the same reason. Vernon Schryver, vjs@sgi.com