On Fri, Jun 10, 2011 at 12:00 PM, rajath kumara <rajathkum...@gmail.com> wrote:
> Thanks Harris for sucha quick reply.
>
> But , i tried it, its not working that way.
>
> Regarding Ostinato, only winpcap/libpcap functions are called to determine
> ports.
>
> what i am worried is , why is it (port numbering)acting so weird?
>
> On Fri, Jun 10, 2011 at 11:42 AM, Guy Harris <g...@alum.mit.edu> wrote:
>
>>
>> On Jun 9, 2011, at 10:22 PM, rajath kumara wrote:
>>
>> > I am working with ostinato for past 1 week, and found it great.
>>
>> By "ostinato" do you mean
>>
>> http://code.google.com/p/ostinato/
>>
>> ?
>>
>> > currently i'm facing problems with port numbering, right now i have 6
>> > ports( 4 D-link ethernet adapters and 2 Netgear , Ethernet PCI
>> > adapter ) . when i connect cables , ports are getting connected ( im
>> > able to transmit, receicve the frames ), but problem is, I'm not able
>> > to figure out the way port numbers are assigned.
>> >
>> > for example , like i mentioned i have 6 ports now, when i connect a
>> > cable to last port , port 3 is activated, if i connect cable to 1st
>> > port in my system, port 2 gets activated in ostinato.
>>
>> The page says
>>
>> Runs on Windows, Linux, BSD and Mac OS X (Will probably run on other
>> platforms also with little or no modification but this hasn't been tested)
>>
>> libpcap/WinPcap do not have any notion of "port numbers" for network
>> adapters. tcpdump/WinDump do, but all they're doing is getting a list of
>> network adapters from libpcap/WinPcap and using ordinal numbers in that
>> list. I don't know whether that's what Ostinato is doing or not.
>>
>> The list of network adapters libpcap/WinPcap supplies is, except for
>> loopback adapters on those platforms where libpcap supports them, in the
>> order in which the OS supplies them to libpcap or whatever order the WinPcap
>> driver gets them from the OS. (Loopback adapters are sorted to the end of
>> the list.)
>>
>> There is no simple rule to determine the order for the list the OS
>> supplies. This list:
>>
>> http://www.iniqua.com/wp-content/uploads/2010/12/ihaveadream.png
>>
>> is on a Mac OS X machine; the first interface is the built-in Ethernet, the
>> second interfaces is the FireWire adapter, the next three are probably
>> add-on Ethernets, and the last one is the loopback adapter. On my Mac, also
>> running OS X, the list is en0, fw0, ppp0, utun0, en1, lo0, with the build-in
>> Ethernet first, the FireWire adapter second, a PPP adapter for my VPN
>> connection to work third, a tunnel interface of some sort fourth, the
>> AirPort Wi-Fi adapter fifth, and the loopback adapter last. If I disconnect
>> the VPN, the list changes to en0, fw0, utun0, en1, lo0.-
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