Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

SLIP/PPP questions

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting SLIP/PPP questions
# 1  
Old 09-30-2010
SLIP/PPP questions
Hello all..

I need to script SLIP dial-up connections and wanted ask others about the following;

- does pppd support SLIP (noticed some releases do and some don't)
- if pppd doesn't support SLIP can bash variables be passed to a dip script (e.g. phone-number, ip-address)
- or is another means of establishing a SLIP connection

I have PPP dial-up connections working and was curious if anyone has ran into the following problem;

- each PPP connection established has a unique unit id (e.g. ppp0, ppp1 - basically the device numbers/indexes, in my case, are unique)
- from time to time chat timeout errors occur when initiating more than one PPP connection simultaneously (e.g. ppp0 on tty00, ppp1 on tty01, ppp2 on tty02)

Please advise if additional information is needed and I am using Ubuntu.

Thanks in advance.
Last edited by LAVco; 09-30-2010 at 09:03 PM..
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

No SMS notifications once ppp up

Hi all, I have an Siemens IoT2020 with a Sim7000e cellular board that I connect via USB to the board and connect to Telstra Cat-M1 network. I can send and receive SMS and do so using Node-Red but can also do with Minicom etc. When connected I get : root@iot2000:~# dmesg | grep USB ACPI:... (0 Replies)
Discussion started by: antc
0 Replies

2. UNIX for Dummies Questions & Answers

Not able to dial specific number using ppp

Hi all, I'm working on ppp establishment. When I tried calling a number using ppp, I could establish a PPP connection successfully. But, when I tried calling another ISP number, it is asking for authentication details whereas that is not the case with the other number. It throws an error saying... (0 Replies)
Discussion started by: sai2krishna
0 Replies

3. IP Networking

Load Balancing ppp

Hello everybody How can i Load Balance two slow ppp(gprs) connections with iptables . (4 Replies)
Discussion started by: rink
4 Replies

4. BSD

FreeBSD 8.2 Huawei E1750 ppp

Hi guys My DSL went down this morning and I needed internet to work. I searched for a config all over but couldn't find exactly what I wanted. After a bit I got mine working fine so I thought I'd post this to help anyone else out there. I am using a Huawei E1750 on T-Mobile UK running FreeBSD... (0 Replies)
Discussion started by: cmilos
0 Replies

5. Shell Programming and Scripting

Help with dial-up to multiple ppp servers

Hello all, I am trying to establish two ppp connections using chap authentication over dial-up. I am using the generic connect scripts and can connect to the first server but when I try to connect the second while the first one is connected there is a chat timeout that occurs. Any... (6 Replies)
Discussion started by: LAVco
6 Replies

6. Solaris

install PPP on Solaris 9

Background: I have been running Solaris 8 on an Ultra5 with 128MB and 4GB disk for years without upgrade. If it ain’t broke, don’t fix it. Now my ISP has upgraded their software, and no longer talks to my old (asppp!) software. Sun no longer ships newer versions of Solaris 8. So I bought Solaris... (1 Reply)
Discussion started by: sandee
1 Replies

7. IP Networking

CCP In PPP

Hi, I am using linux-2.6.10 mandrake. In which i am establishing PPP sessions with the peer.During the PPP negotiations i negotiate even CCP-deflate compression option. I just wanted to know the amount of memory which is being used in kernel space by the compression algorithms,when a ccp... (0 Replies)
Discussion started by: sriram.ec
0 Replies

8. IP Networking

How to get Caller Id in PPP

hello I am workin with PPP to send data from dos machine to unix & Linux machine using FTP with help of fax & voice modem(Caller id Enabled & Exchange provides facility). i need to identify phone(number) connect with Dos machine i.e. to identify from where data is send. so i want to get the... (0 Replies)
Discussion started by: yspl
0 Replies

9. IP Networking

PPP Network through TCP/IP

I have two unix systems. One is Redhat Linux and the other is Sun Solairs. I am runing PPP on my Linux machine but not on my Solaris machine. TCP/IP connects the two machines. I want to pick up PPP on both machines simultaneously with only one dial up connection on my linux machine. ... (4 Replies)
Discussion started by: Photon_Blast
4 Replies

10. UNIX for Dummies Questions & Answers

PPP in netcfg

Hi! I'm using RedHat 7.1 and I have some prolems with connecting with ppp. I have run modemtool and told that I'm using ttyS0. Whe I then try to set up a PPP connection using netcfg the PPP option is not there. I have all the other alternativs except PPP. What have I missed? (6 Replies)
Discussion started by: <Therapy>
6 Replies
Login or Register to Ask a Question

LEARN ABOUT NETBSD

sl

SL(4)							   BSD Kernel Interfaces Manual 						     SL(4)

NAME

     sl -- Serial Line IP (SLIP) network interface

SYNOPSIS

     pseudo-device sl

DESCRIPTION

     The sl interface allows asynchronous serial lines to be used as IPv4 network interfaces using the SLIP protocol.

     To use the sl interface, the administrator must first create the interface and assign a tty line to it.  The sl interface is created using
     the ifconfig(8) create subcommand, and slattach(8) is used to assign a tty line to the interface.	Once the interface is attached, network
     source and destination addresses and other parameters are configured via ifconfig(8).

     The sl interface can use Van Jacobson TCP header compression and ICMP filtering.  The following flags to ifconfig(8) control these properties
     of a SLIP link:

     link0	   Turn on Van Jacobson header compression.

     -link0	   Turn off header compression. (default)

     link1	   Don't pass through ICMP packets.

     -link1	   Do pass through ICMP packets. (default)

     link2	   If a packet with a compressed header is received, automatically enable compression of outgoing packets. (default)

     -link2	   Don't auto-enable compression.

DIAGNOSTICS

     sl%d: af%d not supported .  The interface was handed a message with addresses formatted in an unsuitable address family; the packet was
     dropped.

SEE ALSO

     inet(4), intro(4), ppp(4), strip(4), ifconfig(8), slattach(8), sliplogin(8), slstats(8)

     J. Romkey, A Nonstandard for Transmission of IP Datagrams over Serial Lines: SLIP, RFC, 1055, June 1988.

     Van Jacobson, Compressing TCP/IP Headers for Low-Speed Serial Links, RFC, 1144, February 1990.

HISTORY

     The sl device appeared in NetBSD 1.0.

BUGS

     SLIP can only transmit IPv4 packets between preconfigured hosts on an asynchronous serial link.  It has no provision for address negotiation,
     carriage of additional protocols (e.g.  XNS, AppleTalk, DECNET), and is not designed for synchronous serial links.  This is why SLIP has been
     superseded by the Point-to-Point Protocol (PPP), which does all of those things, and much more.

BSD
								   July 9, 2006 							       BSD