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If I now have both access to wired (Ethernet) and wireless networks, how I know which network I'm using currently without the help of NetworkManager (I had disabled the NetworkManager ...
- 12-26-2008 #1Just Joined!
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How to detect whether I'm using Ethernet or wireless without NetworkManager?
If I now have both access to wired (Ethernet) and wireless networks, how I know which network I'm using currently without the help of NetworkManager (I had disabled the NetworkManager application). From where I can check it? Or which command I can used in terminal to know about it?
Thanks in advance
- 12-26-2008 #2Just Joined!
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su ifconfig -a
(enter root password)
this will tell you which adapter has a valid IP address, which will be the adapter you are currently connecting with.
- 12-27-2008 #3Just Joined!
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but my both interface eth0 and eth1 also have a valid IP address.
so how?Code:christyyim@christyyim-laptop:~$ ifconfig -a eth0 Link encap:Ethernet HWaddr 00:1D:92:51:AF:27 inet addr:192.168.1.124 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::21d:92ff:fe51:af27/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1380 errors:0 dropped:0 overruns:0 frame:0 TX packets:142 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:487944 (476.5 KB) TX bytes:22067 (21.5 KB) Interrupt:17 Base address:0x2000 eth1 Link encap:Ethernet HWaddr 00:1C:BF:98:B1:60 inet addr:192.168.1.8 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::21c:bfff:fe98:b160/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:3308 errors:0 dropped:446 overruns:0 frame:0 TX packets:3125 errors:0 dropped:0 overruns:0 carrier:1 collisions:0 txqueuelen:1000 RX bytes:7472253 (7.1 MB) TX bytes:1527526 (1.4 MB) Interrupt:18 Base address:0xe000 Memory:fdeff000-fdefffff
- 12-27-2008 #4Super Moderator
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eth0 (476.5 KB)
Originally Posted by christyyim 
eth1 (7.1 MB)
I think it safe to say eth1 is doing all the work here.I do not respond to private messages asking for Linux help, Please keep it on the forums only.
All new users please read this.** Forum FAQS. ** Adopt an unanswered post.
- 12-27-2008 #5Just Joined!
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Strange... I'm not able to duplicate that on my SUSE machine.
Connected LAN:
ath0 Link encap:Ethernet HWaddr 00:14:A4:61:16:EC
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:2587 errors:0 dropped:0 overruns:0 frame:0
TX packets:2878 errors:3 dropped:3 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1802457 (1.7 Mb) TX bytes:619314 (604.7 Kb)
eth0 Link encap:Ethernet HWaddr 00:C0:9F:EB:4C:05
inet addr:10.1.2.2 Bcast:10.1.2.255 Mask:255.255.255.0
inet6 addr: fe80::2c0:9fff:feeb:4c05/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:150306 errors:1 dropped:0 overruns:0 frame:1
TX packets:98315 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:150393927 (143.4 Mb) TX bytes:14468536 (13.7 Mb)
Interrupt:20
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:3299 errors:0 dropped:0 overruns:0 frame:0
TX packets:3299 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:218851 (213.7 Kb) TX bytes:218851 (213.7 Kb)
wifi0 Link encap:UNSPEC HWaddr 00-14-A4-61-16-EC-30-30-00-00-00-00-00-00-00-00
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:58232 errors:0 dropped:0 overruns:0 frame:20536
TX packets:3086 errors:0 dropped:3 overruns:0 carrier:0
collisions:0 txqueuelen:199
RX bytes:10657796 (10.1 Mb) TX bytes:745421 (727.9 Kb)
Interrupt:22
Connected wlan:
ath0 Link encap:Ethernet HWaddr 00:14:A4:61:16:EC
inet addr:10.1.2.4 Bcast:10.1.2.255 Mask:255.255.255.0
inet6 addr: fe80::214:a4ff:fe61:16ec/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2632 errors:0 dropped:0 overruns:0 frame:0
TX packets:2942 errors:4 dropped:4 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1820023 (1.7 Mb) TX bytes:627615 (612.9 Kb)
eth0 Link encap:Ethernet HWaddr 00:C0:9F:EB:4C:05
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:150327 errors:1 dropped:0 overruns:0 frame:1
TX packets:98321 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:150396411 (143.4 Mb) TX bytes:14469256 (13.7 Mb)
Interrupt:20
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:3299 errors:0 dropped:0 overruns:0 frame:0
TX packets:3299 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:218851 (213.7 Kb) TX bytes:218851 (213.7 Kb)
wifi0 Link encap:UNSPEC HWaddr 00-14-A4-61-16-EC-30-30-00-00-00-00-00-00-00-00
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:59106 errors:0 dropped:0 overruns:0 frame:20747
TX packets:3371 errors:0 dropped:4 overruns:0 carrier:0
collisions:0 txqueuelen:199
RX bytes:10817033 (10.3 Mb) TX bytes:766369 (748.4 Kb)
Interrupt:22
Not able to get both to connect simultaneously...
What distro are you running?
Hardware?
- 12-27-2008 #6Super Moderator
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I didn't think it could be done very easily, I have never been able to do it. I don't even know if it's good or bad?!?! Originally Posted by mhanan I do not respond to private messages asking for Linux help, Please keep it on the forums only.
All new users please read this.** Forum FAQS. ** Adopt an unanswered post.
- 12-27-2008 #7Just Joined!
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Two adapters fighting over control... can't possibly be good. Originally Posted by MikeTbob
- 12-27-2008 #8Just Joined!
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the big difference here is because I connected to wireless network at the begining. After a while i only conneced to both wired and wireless network. So i think this is not a suitable way to determine the current used network because the number of bytes received is being accumulated all the way and is not the instantaneous received bytes. It only can be reset when you restart your pc. Originally Posted by MikeTbob
I think i can get both IP address is because i had disabled the NetworkManager application. With the NetworkManager enabled, I also get like what you get. Hence, I still no idea on how to determine whether I'm using wired or wireless networks without NetworkManager. Originally Posted by mhanan
Any advices? Thanks
- 12-27-2008 #9Just Joined!
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a brute force way would be to run packet sniffer on both interfaces to see where the traffic is going realtime.
You could also use netstat to get a snapshot of active network connections. This will show by ip address (to/from) as well as ports and interfaces.
route -e will show you your servers routing tables.
CSR
- 12-27-2008 #10Just Joined!
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Besides route command, got any other command? Because i not really understand how route command runs.
Thanks.
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