Discover Logical Domains Managers Running on Your Subnet

1. Open a multicast socket.

   Ensure that you use the port and group information specified in Multicast Communication.

2. Send a multicast_msg_t message over the socket.

   The message should include the following:

   • Valid value for version_no, which is 1 as defined by MAC_MULTI_VERSION

   • Valid value for magic_no, which is 92792004 as defined by MAC_MULTI_MAGIC_NO

   • msg_type of LDMD_DISC_SEND

3. Listen on the multicast socket for responses from Logical Domains Managers.

   The responses must be a multicast_msg_t message with the following:

   • Valid value for version_no

   • Valid value for magic_no

   • msg_type set to LDMD_DISC_RESP

   • Payload consisting of a ldmd_discovery_t structure, which contains the following information:

     • ldmd_version – Version of the Logical Domains Manager running on the system

     • hostname – Host name of the system

     • ip_address – IP address of the system

     • port_no – Port number being used by the Logical Domains Manager for communications, which should be XMPP port 6482

   When listening for a response from Logical Domains Managers, ensure that any auto-allocation MAC collision-detection packets are discarded.