2.2.4 Association Start Response Message

After receiving an Association Start Request Message, a NBNS server sends back an Association Start Response Message if it accepts the association request. The following diagram shows the Association Start Response Message.

0	1	2	3	4	5	6	7	8	9	1 0	1	2	3	4	5	6	7	8	9	2 0	1	2	3	4	5	6	7	8	9	3 0	1
Common Replication Message Header (16 bytes)
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Sender Association Handle
NBNS Major Version																NBNS Minor Version
Reserved (21 bytes)
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Common Replication Message Header (16 bytes):  The Common Replication Message Header, as specified in section 2.2.2. The Packet Length field MUST be 41. The Message Type field MUST be set to 1. If the field is not 1, the association is not set up.

Sender Association Handle (4 bytes): An unsigned 32-bit integer that uniquely identifies this association on the machine that sends this Association Start Response Message.

NBNS Major Version (2 bytes): An unsigned 16-bit integer. It is the major version of NBNS on the sender machine. It MUST be set to 2. If the major version is not set to 2, then the packet MUST be silently discarded.

NBNS Minor Version (2 bytes): An unsigned 16-bit integer. It is the minor version of NBNS on the sender machine.

Reserved (21 bytes): 21 bytes to pad the packet length to 41 bytes. It MUST be ignored upon receipt.