On Wed, 09 Feb 2000, Jiju Thomas Mathew used an e-pen to say :
>> >with one NIC enough, if ping/telnet/ftp is working to the 127.0.0.1
>> >as well as the *IP*, then the NIC is supposedly okay.
>
>>
>> Well,
>> That might not be exactly a sound inference. When you are using a
>> loopback interface, ie 127.0.0.1, the datastream is not channelised via
>> the Physical layer (ie NIC). The data is instead routed into the same
>
>I said , 'if ping/telnet/ftp is working to the 127.0.0.1 as well as the
>*IP*' okay ?
Majorly sorry,
I completely overlooked it.. probably because it wasn't
*highlighted* in your original post ;)
But does the OS really go down to the physical level if the i/f is
bound to the IP ? OR does it still loopback via the network layer ?
Actually, once you know that 192.168.x.y is your own address, there is no
need for the OS to go down to the PL. But I am not sure exactly what
happens.
A NIC has only 1 cable (ie either BNC or RJ45 conn) to do sends
and receives. So with 1 NIC only,and no cables, (even if you attach one
end of the cable, where does the other end go ?) how would you "float" a
data bit in the "Ethernet " ? And have some kindof IP matching and packet
grabbing ? These functionalities of the card might be absent /
malfunctioning , so it wouldn't be possible to check them.
My "guess" is that once an IP is bound to an i/f, the packets are
looped back via the Network layer. This is just a "guess", pl correct me,
if otherwise.
Shourya
_______________________________________________________________
Shourya Sarcar <[EMAIL PROTECTED]> <Tel:91-033-4710477>
Department of Computer Science and Engineering
Jadavpur University Calcutta, India 700 032
All the world's a stage..
And I am acting tonight
C - the difference : http://www.eskimo.com/~scs/C-faq/top.html
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