I have a Motorola SM56 PCI Fax Modem (internal). I am using the driver given in the PCQLinux 7.1 distro (sm56-85.1-10.i386.rpm). I have checked that the modem is working properly.
I configured kppp as per the instructions given in the PCQ August issue (Pg 112, 113). The only ambiguous instruction was regarding the type of authentication used by the ISP. The options offered are PAP, CHAP, script-based and terminal-based. My ISP is VSNL and I don't have a clue what it requires so I chose terminal-based.
kppp dialed into the VSNL server successfully but after a few seconds pppd died because of this error:
"Error 17: The PPP negotiation failed because serial loopback was detected."
What is serial loopback? What can I do to avoid this error?
Thanks. Parul
Sometime Today, Parul Mathur assembled some asciibets to say:
the type of authentication used by the ISP. The options offered are PAP, CHAP, script-based and terminal-based. My ISP is VSNL and I
VSNL supports PAP, script and terminal. PAP is where the system does authentication through exchange of certain info. script is where you have an expect script read from the line, and write to it in exactly the same way as you would. terminal based is supposed to bring up a terminal for you to type your username and password.
This is what didn't happen, which is why pppd died.
You need to configure it as script-based, and enter required details in your script.
There are easier ways however.
Philip
Parul Mathur wrote on Thursday, October 18, 2001
I have a Motorola SM56 PCI Fax Modem (internal). I am using the
driver
given in the PCQLinux 7.1 distro (sm56-85.1-10.i386.rpm). I
have
checked that the modem is working properly.
I also have the same modem and same driver installed on SuSE 7.1. It used to work great untill last week. Since last week or so, I'm also getting the same message while connecting. My ISP is Roltanet and I'm using wvdial for connecting to the net. I also tried connecting using Kppp, but as expected it also detected serial loopback. I also have the same question, what is serial loopback? Some times, if i dial in as a root, then I used to get connected, but since last couple of days, even that has also stopped.
Btw, for allowing all the users on my home PC system, chmoded /dev/modem to 777. Is this okay or is there some better workaround? I did this becoz I read somewhere in our mail archives that one shud not dial-up as root for the sake of security reasons.
Thanks a lot in advance.
Warm regards, Kinjal Sonpal
The serial loopback error occurs when the pppd program tries to execute before a connection to the remote server is completed. In order to elimiate this problem be sure to place the following in your chat script.
CONNECT 'CONNECT' \
regards lilo ----- Original Message ----- From: Kinjal Sonpal kinjalsonpal@zeenext.com To: linuxers@mm.ilug-bom.org.in Sent: Friday, October 19, 2001 10:55 AM Subject: Re: [ILUG-BOM] pppd error no. 17
Parul Mathur wrote on Thursday, October 18, 2001
I have a Motorola SM56 PCI Fax Modem (internal). I am using the
driver
given in the PCQLinux 7.1 distro (sm56-85.1-10.i386.rpm). I
have
checked that the modem is working properly.
I also have the same modem and same driver installed on SuSE 7.1. It used to work great untill last week. Since last week or so, I'm also getting the same message while connecting. My ISP is Roltanet and I'm using wvdial for connecting to the net. I also tried connecting using Kppp, but as expected it also detected serial loopback. I also have the same question, what is serial loopback? Some times, if i dial in as a root, then I used to get connected, but since last couple of days, even that has also stopped.
Btw, for allowing all the users on my home PC system, chmoded /dev/modem to 777. Is this okay or is there some better workaround? I did this becoz I read somewhere in our mail archives that one shud not dial-up as root for the sake of security reasons.
Thanks a lot in advance.
Warm regards, Kinjal Sonpal
LInux LOver wrote on Monday, October 22, 2001
The serial loopback error occurs when the pppd program tries to
execute
before a connection to the remote server is completed. In order
to elimiate
this problem be sure to place the following in your chat
script.
CONNECT 'CONNECT' \
I don't use chat scripts. I use wvdial or kppp. I'm not aware of how to use chat scripts. What do I do?
regards lilo
Thanks a lot. Regards, Kinjal Sonpal
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Kinjal Sonpal -
LInux LOver -
Parul Mathur -
Philip S Tellis