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Multicast issue .

Hi All,

There are two network cards in one computer (named A) , and there is one
network card in another computer(named B).

On computer A: one network card is used to connect to internet, and the
other network card is used in intranet whose ipaddress is 192.168.0.1
On computer B: the network card's ipaddress is 192.168.0.2.

These two computer can connect to each other.

The question is :
B can receive multicast sent from A, A cannot receive the package from B
and itself.
If disable the internet network card on A, A can receive multicast
package sended from B.
Following code is used to receive multicast package:
----------------------------------------
this._clsMCastR eceiver = new Socket(AddressF amily.InterNetw ork,
SocketType.Dgra m, ProtocolType.Ud p);
IPEndPoint ipep=new IPEndPoint(IPAd dress.Any , iMCastPort);
this._clsMCastR eceiver.Bind(ip ep);
IPAddress ip=IPAddress.Pa rse(strMCastIPA ddress);
this._clsMCastR eceiver.SetSock etOption(Socket OptionLevel.IP, SocketOptionNam e
..AddMembership , new MulticastOption (ip , IPAddress.Any)) ;
Would you please give me some advise on this issue.

Thanks ,

Phlics.

Nov 15 '05 #1
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