SLIP connection very slow compared to that under DOS, WHY?

SLIP connection very slow compared to that under DOS, WHY?

Post by Liangsheng Che » Fri, 12 May 1995 04:00:00



Hi, there:

I use DIP to enable SLIP connection (mode CSLIP) for my Linux machine (Slackware 2.2.0). I have
noticed that the SLIP connecton is much slower than that under DOS. I come to this conclusion
based on my experience on FTP and Netscape. It seems that I can never exceed the limit of
1.3kb/s ! However under DOS, I use Lan Workplace and Telix to establish SLIP (I hate to admit I
just couldn't get SLIP up with Trumpet Winsock. Actually I got SLIP to run once using TCPMAN
then never again no matter how hard I was trying.) under DOS. The transfer rate I get can be
much higher (sometimes >7kb/s).

The modem I have is a 14.4k. I set MTU 296 and SPEED 38400 for Linux.

Your comments would be greatly appreciated.

 
 
 

SLIP connection very slow compared to that under DOS, WHY?

Post by Lehmkuehl » Sun, 14 May 1995 04:00:00


: Hi, there:

: I use DIP to enable SLIP connection (mode CSLIP) for my Linux machine (Slackware 2.2.0). I have
: noticed that the SLIP connecton is much slower than that under DOS. I come to this conclusion
: based on my experience on FTP and Netscape. It seems that I can never exceed the limit of
: 1.3kb/s ! However under DOS, I use Lan Workplace and Telix to establish SLIP (I hate to admit I
: just couldn't get SLIP up with Trumpet Winsock. Actually I got SLIP to run once using TCPMAN
: then never again no matter how hard I was trying.) under DOS. The transfer rate I get can be
: much higher (sometimes >7kb/s).

That's not possible with an 14.4k. On my system I get 1.3kb/s and that is the
physical limit for an SLIP connection. Perhaps you can exceeed some more bytes/s
if you use CSLIP or PPP but not >7kb/s

: The modem I have is a 14.4k. I set MTU 296 and SPEED 38400 for Linux.

Andreas
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1. Help - slow,slow, slip,slip, slow

        I'm trying to connect to the Net using Linux.

        Everything works fine in Windows..14.4k,Cslip

        When I connect using Dip/Slip it's VERY SLOW.

        Ping to local ISP host 300ms using Windows...

        about 12secs using Linux and a lot of errors

        (lost pkts). The modem has a 16550A uart,connects

        at 14400 Rel LAPM ok and I've the speed set to 38400

        in Dip....(stty shows speed 38400 and crtscts set)

        Any advice/help would be appreciated.
                                             Thanks,FMcG

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