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Date: Tue, 16 Jan 1996 14:33:23 -0700
From: Nate Williams <nate@sri.MT.net>
Message-Id: <199601162133.OAA05802@rocky.sri.MT.net>
To: max@maxie.com
Cc: freebsd-questions@freebsd.org
Subject: Re: PPP servers cannot talk to local machines
In-Reply-To: <199601162102.QAA11083@underdog.maxie.com>
References: <199601162102.QAA11083@underdog.maxie.com>
Sender: owner-questions@freebsd.org
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> I recently switched our PPP server from Linux to FreeBSD 2.1 (to match the
> rest of the lan), and I am having a rather odd problem with it.

What kind of machine is connecting to the PPP server?

>         There is no routing problem, you can successfully connect and start
> a session, for example FTP, and transfer file listings, but it will hang if
> you try to transfer a file. A Web session will transfer the page (if it is
> short) but hang on graphics.
> 
>         If the file is very small, it will successfully transfer it, but
> anything larger than around 1-2K will result in a hung connection. (Not
> session, it does not effect anything else going through PPP at all)

This sounds like a compression problem.  Are both ends of the link setup
to use compression, or *NOT* use compression?  Earlier versions of PPP
don't negotiate compression correctly, so it *may* be a compression
problem.

>         Exact same results whether I use user mode PPP or the kernel one. It
> seems to affect any TCP service with a large amount of data to transfer,
> FTP, Web, POP3, ect.

Both the user mode and kernel PPP correctly negotiate compression
options, but your remote host may not.

>         All the hardware is unchanged from the when it was Linux, and the
> clients (mostly Trumpet and Win95 systems) are unchanged as well.

I would try explicitly disabling compression on the server to see if that
helps.


Nate