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SubjectRe: PPP bug
Hi Alan.

>> What happends: TCP connection's freezing when hex sequence occup:
>> 0x74 0xab 0x2b 0x2b 0x20 (attach included). All other TCP
>> connections still alive.

>> Try to up/down loading attached file or via telnet connections
>> type: cat TEST.

>> Both cases this tcp connections freezes (but netstat -an shows
>> ESTABLISHED).

>> Maybe I'm wrong? I've tryed all software combinations described
>> above on different computers. Also I've tryed -bsdcomp -pc
>> asyncmap combinations with pppd.

> The sequence in question is "+++". Either your modem is
> misconfigured (you've got no guard bands set) or faulty. You
> should refer to your manuals and possibly the modem vendor.

> Not a Linux bug

Another possibility that springs to mind is the old one of having the
modem set to use software handshaking, and tell Linux it's using
hardware handshaking. I now pretty much automatically set up PPP to
escape all four characters that can hit this, 0x11, 0x13, 0x91 and
0x93, simply so that I don't get called out unnecessarily...

Best wishes from Riley.

---
* ftp://ftp.MemAlpha.cx/pub/rhw/Linux
* http://www.MemAlpha.cx/~rhw/kernel.versions.html


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