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.- > This is the tcpdump-workers list. > Visit https://cod.sandelman.ca/ to unsubscribe. > - This is the tcpdump-workers list. Visit https://cod.sandelman.ca/ to unsubscribe.
