Hi Gary,
Thanks for the detailed explanation.
> It appears you have done everything right but any little item missed will
> stop the link from working properly.
>
> There are several questions you need to ask yourself...
>
> Except where stated otherwise all the tests below are performed from the
> BeagleBone system.
>
> 1. Does ifconfig command show the correct information for the usb0
> interface?
>
ifconfig command shows as below and I think its fine.
usb0 Link encap:Ethernet HWaddr 32:c8:da:35:6b:a9
inet addr:192.168.7.2 Bcast:192.168.7.3 Mask:255.255.255.252
inet6 addr: fe80::30c8:daff:fe35:6ba9/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:564 errors:0 dropped:0 overruns:0 frame:0
TX packets:76 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:161443 (157.6 KiB) TX bytes:17438 (17.0 KiB)
>
> 2. Can you ping the ip address assigned to the usb0 interface
> (192.168.7.2)?
> If not then there is something not configured properly on your usb0
> interface. Check the /etc/network/interfaces file to make sure the entry
> for usb0 is correct.
>
Yes, it pings with 192.168.7.2 ( pings in SSH of putty)
>
> 3. Can you ping the ip address of the PC's link interface (192.168.7.1)?
> If you can not ping the PC link interface address then there is
> something incorrectly configured on that interface - double check the
> interface settings to make sure the assigned IP address & netmask address
> is set correctly.
>
Yes, I am able to ping 192.168.7.1 also after I added the gateway (
pings in SSH of putty)
>
> 4. From the PC can you ping the link interface (192.168.7.1)?
> If not there is something wrong with the link interface configuration.
>
Yes, I can. ( in Cmd line of windows 7)
>
> 5. From the PC can you ping the BeagleBone usb0 interface (192.168.7.2)?
> If not double-check the usb0 interface config
>
Yes, I can. ( in Cmd line of windows 7)
>
> 6. Can you ping the PC's network bridged IP address (the interface you
> have bridged over to the usb link interface on the PC)?
> If not make sure you have the bridging setup properly on the PC
> interfaces.
>
I am actually using wifi in my lap (no ethernet cable) and I have shared
this internet with the BBB's USB ethernet. When I typed ipconfig in cmd
line of Windows 7, I got IPv4 Address as 192.168.1.36 in Wireless LAN
adapter. And I was able to ping 192.168.1.36 in my cmd line of Windows 7. I
hope this is what you meant. Please correct me if I am wrong.
>
> 7. Can you ping the PC's default gateway IP address?
>
I was able to ping the Default Gateway (192.168.1.254) for this
Wireless LAN adapter in cmd line of Windows 7. But I am not able to
ping 192.168.1.36 and 192.168.1.254 from BBB's SSH
> If everything is reachable (pingable) up to this point then it has to be
> something in the resolver settings (DNS).
>
> Double check to make sure the /etc/resolv.conf file has the proper DNS
> server entry so you can resolve FQDN names (those listed in DNS that is).
>
> It has been my experience when network issues crop up they tend to be
> something simple but over looked if things had previously worked before
> something was changed.
>
My current settings in /etc/resolv.conf is as below. Is this fine?
domain localdomain
search localdomain
nameserver 192.168.1.1
nameserver 8.8.8.8
Moreover for my Wireless LAN settings, I have selected 'Obtain DNS server
adress automatically' for IPv4 protocol. But for LAN 3 (which is BBB'USB
ethernet), I could only select 'Use the following DNS server address' which
is actually blank.
And also, in Network connections, LAN 3 shows that it has 'No internet
access' and Wireless LAN shows it has internet access.
Please let me know if I there is any issue with DNS server entries and to
change it
Thank you very much for your detailed explanation.
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