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Author Topic: Can't connect to the internet via WLAN  (Read 4016 times)

Offline r50e

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Can't connect to the internet via WLAN
« on: February 05, 2014, 08:54:04 AM »
Hi there,

I run in the same problem as Trace. I have tried to setup a static IP for my WLAN device - without success. See:  (http://forum.tinycorelinux.net/index.php/topic,16571.0.html).

I decided to activate DHCP for testing on the AP. And now I'm really confused:

1. Used wifi.sh and entered credentials for WPA
2. I get IP from AP (as expected)
3. But I can't connect to the Internet

In fact, if I get a IP from AP the connection (wpa_supplicant is correct konfigured).
I have a correct default gateway and a DNS Server (from DHCP)
But I can't connect to the internet - why???

I figured out, that there are some errors on the eth1 (my wlan device) in the RX queu (2 errors and 80 dropped). But why is dhcp working and the rest of the connection not?

The hardware I run TC is a IBM R50e and the firmware driver I load for WLAN is the ipw2020

Offline gerald_clark

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Re: Can't connect to the internet via WLAN
« Reply #1 on: February 05, 2014, 09:10:27 AM »
Post the output of
ifconfig -a
ipconfig
route -n
cat /etc/resolv.conf

Offline r50e

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Re: Can't connect to the internet via WLAN
« Reply #2 on: February 05, 2014, 09:27:06 AM »
Here the output


Code: [Select]
ifconfig -a
dummy0    Link encap:Ethernet  HWaddr 82:D0:B1:DF:DB:10 
          BROADCAST NOARP  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

eth0      Link encap:Ethernet  HWaddr 00:0A:E4:3A:B7:23 
          inet addr:192.168.222.65  Bcast:192.168.222.255  Mask:255.255.255.0
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

eth1      Link encap:Ethernet  HWaddr 00:13:CE:8D:F7:46 
          inet addr:192.168.222.60  Bcast:192.168.222.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:20233 errors:25 dropped:2510 overruns:0 frame:0
          TX packets:34 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:4304700 (4.1 MiB)  TX bytes:5384 (5.2 KiB)

ip_vti0   Link encap:UNSPEC  HWaddr 00-00-00-00-FF-00-00-00-00-00-00-00-00-00-00-00 
          NOARP  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

lo        Link encap:Local Loopback 
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:216 errors:0 dropped:0 overruns:0 frame:0
          TX packets:216 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:21944 (21.4 KiB)  TX bytes:21944 (21.4 KiB)

tunl0     Link encap:UNSPEC  HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 
          NOARP  MTU:1480  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

Code: [Select]
route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.222.1   0.0.0.0         UG    0      0        0 eth1
0.0.0.0         192.168.222.1   0.0.0.0         UG    0      0        0 eth0
127.0.0.1       0.0.0.0         255.255.255.255 UH    0      0        0 lo
192.168.222.0   0.0.0.0         255.255.255.0   U     0      0        0 eth0
192.168.222.0   0.0.0.0         255.255.255.0   U     0      0        0 eth1

Code: [Select]
cat /etc/resolv.conf
search fritz.box
nameserver 192.168.222.1

I startet with syslog option, but I found nothing of interest (dmesg also not)

Offline tinypoodle

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Re: Can't connect to the internet via WLAN
« Reply #3 on: February 05, 2014, 10:19:17 AM »
Use boot code "nodhcp".
"Software gets slower faster than hardware gets faster." Niklaus Wirth - A Plea for Lean Software (1995)

Offline gerald_clark

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Re: Can't connect to the internet via WLAN
« Reply #4 on: February 05, 2014, 10:29:21 AM »
Also, don't have two network interfaces up on the same subnet.

Offline r50e

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Re: Can't connect to the internet via WLAN
« Reply #5 on: February 05, 2014, 10:33:43 AM »
@ tinypoodle

That is the second step I will do. But now my problem is that the connection to the internet don't work - even with DHCP. And what is the cause for the errors I get on eth1?

eth1      Link encap:Ethernet  HWaddr 00:13:CE:8D:F7:46 
          inet addr:192.168.222.60  Bcast:192.168.222.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:20233 errors:25 dropped:2510 overruns:0 frame:0
          TX packets:34 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:4304700 (4.1 MiB)  TX bytes:5384 (5.2 KiB)

@ gerald_clark
this was the solution. Thank you!
sudo ifconfig eth0 down


Offline tinypoodle

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Re: Can't connect to the internet via WLAN
« Reply #6 on: February 05, 2014, 10:38:37 AM »
Cause is two interfaces on same subnet, plus two default gateways for one host (or if you want, one and the same gateway assigned to two interfaces), therefore routing becomes random.
« Last Edit: February 05, 2014, 10:49:55 AM by tinypoodle »
"Software gets slower faster than hardware gets faster." Niklaus Wirth - A Plea for Lean Software (1995)