Slack 10 and ISDN connection

tsampouk · 07-05-2004, 05:37 PM

Hi!

I just upgraded to Slack 10 from 9.1 (where everything worked fine).
I used an ISDN modem to connect to the internet. I use kppp to make the connection and everything seems OK except that I am not really online.
No address responds on a ping, not even the peer address.

Here is some log:
ifconfig:
ppp0 Link encap:Point-to-Point Protocol
inet addr:150.140.128.176 P-t-P:150.140.128.82 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:15 errors:0 dropped:0 overruns:0 frame:0
TX packets:7 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:690 (690.0 b) TX bytes:87 (87.0 b)

kppp:
Kernel supports ppp allright.
In parent: pppd pid 32095
Opener: received OpenResolv
Couldn't find interface ppp0: No such device

The last message appears after the authentication is over and the pppd deamon is started. It is really strange because the ppp interface is already registered.
Note that the exact kernel configuration (v2.6.6) worked fine in slack 9.1. All the ppp corresponding modules are loaded.

Thanks!

rdm · 07-18-2004, 04:27 PM

i have an isdn modem in my computer, but i cant use it on linux slackware... when i used suse it was configured automatically, but i dont know as can i configure it on slackware... please help me!

vagalati · 07-21-2004, 08:40 AM

I have the same problem with tsampouk.

I am using a usb ISDN modem (not a card). I am using acm driver (the device is /dev/ttyACM0) and one B-channel (64kbs).
I beleive though, that it is not a modem/ISDN related problem.

The problem is, when I dial up with kppp, everything is OK (modem init-> dialing->auth->ip address), but after I am online, i get no responce from the rest of the world. By that I mean that pinging my localnet, localhost, and ip address assigned from my ISP, I get responce. On the other hand pinging my ISP's gateway and beyond (every other ip OR hostname) i get no responce.

It doesn't seem to be a resolving problem (I tested hostnames AND ip-addresses) and my /etc/resolv.conf seems to be OK.
My routing seems to be table is OK too.

Here are some outputs:
ifconfig:

Code:

eth0      Link encap:Ethernet  HWaddr 00:04:75:B6:10:52
          inet addr:192.168.0.1  Bcast:192.168.0.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:165 errors:0 dropped:0 overruns:0 frame:0
          TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:21288 (20.7 Kb)  TX bytes:699 (699.0 b)
          Interrupt:10 Base address:0xe800

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:174 errors:0 dropped:0 overruns:0 frame:0
          TX packets:174 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:18214 (17.7 Kb)  TX bytes:18214 (17.7 Kb)

ppp0      Link encap:Point-to-Point Protocol
          inet addr:80.76.41.92  P-t-P:80.76.41.1  Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:3 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:3
          RX bytes:66 (66.0 b)  TX bytes:87 (87.0 b)

route -n

Code:

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
80.76.41.1      0.0.0.0         255.255.255.255 UH    0      0        0 ppp0
192.168.0.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
127.0.0.0       0.0.0.0         255.0.0.0       U     0      0        0 lo
0.0.0.0         80.76.41.1      0.0.0.0         UG    0      0        0 ppp0

cat /etc/resolv.conf

Code:

nameserver 80.76.39.10  #kppp temp entry
nameserver 80.76.33.227 #kppp temp entry

tail -f /var/log/messages

Code:

Jul 21 14:14:18 izgar pppd[4816]: pppd 2.4.2 started by root, uid 0
Jul 21 14:14:18 izgar pppd[4816]: Using interface ppp0
Jul 21 14:14:18 izgar pppd[4816]: Connect: ppp0 <--> /dev/ttyACM0
Jul 21 14:14:20 izgar pppd[4816]: CHAP authentication succeeded
Jul 21 14:14:20 izgar pppd[4816]: local  IP address 80.76.41.92
Jul 21 14:14:20 izgar pppd[4816]: remote IP address 80.76.41.1
Jul 21 14:14:20 izgar pppd[4816]: primary   DNS address 80.76.39.10
Jul 21 14:14:20 izgar pppd[4816]: secondary DNS address 80.76.33.227
Jul 21 14:21:04 izgar pppd[4816]: Terminating on signal 15.
Jul 21 14:21:04 izgar pppd[4816]: Connection terminated.
Jul 21 14:21:04 izgar pppd[4816]: Connect time 6.8 minutes.
Jul 21 14:21:04 izgar pppd[4816]: Sent 2648 bytes, received 114 bytes.
Jul 21 14:21:04 izgar pppd[4816]: Connect time 6.8 minutes.
Jul 21 14:21:04 izgar pppd[4816]: Sent 2648 bytes, received 114 bytes.
Jul 21 14:21:04 izgar pppd[4816]: Exit.

I had emptied /etc/ppp/options before dialing with kppp (in case there is an option-conflict).

The strange thing is that if I setup ppp with pppsetup and use ppp-go and ppp-off scripts to dial-up everything works fine (though pinging only my ISP's gateway doesn't work). I can access web pages, ssh etc.

Why using kppp nothing responds? Had anyone the same problem and managed to solve it? If so please tell us what you did.

I am using slack 10, with a custom-compiled 2.6.7 kernel. Furthermore, I am not running any iptables firewall service.
Before installing Slackware 10 I had version 9.0 with kernel 2.6.4 and there were no such problems.

Goo · 10-31-2004, 07:39 AM

hey everyone .. i'm also trying to get isdn working with kpp ... it's no problem getting it configured for ipppd ... but I can't seem to find the right init strings for ttyI0 ...dan anyone help ? how did u configure kppp ?