NetBIOS, NetBEUI, NBF, NBT, NBIPX, SMB, CIFS Networking: NetBIOS to CIFS
<<< Previous NetBIOS protocols in IBM PC Network Next >>>

Comparison of NetBIOS protocols in IBM PC Network

Table 5. Name Management Packets

Name Claim / Cancel Name Response
< - 1 Octet (8 bits) -> < - 1 Octet (8 bits) ->
Start Deliminator = 0x7E Start Deliminator = 0x7E
Destination Address 6 octets Destination Address 6 octets
Source Address 6 octets Source Address 6 octets
Length 2 octets Length 2 octets
Value 0x5000 Value 0x4000
Claim 0x10 Cancel 0xA0 Value 0x30
No Packets to accept N No Packets to accept N
Connection id 2 octets Connection id 2 octets
Value 0x02 Undefined
Value 0x02 Undefined
Undefined Reason NAK
Undefined Undefined
Value 0x04 Value 0x04
Value 0x00 Value 0x00
Undefined 4 octets Undefined 4 octets
Value 0x10 Value 10h
Value XXh Value XXh
Value 0x00 Value 0x00
Value 0x00 Value 0x00
ASCII Dest name 16 octets ASCII Dest name 16 octets
Prev net con id Dest node conn id
Prev net con id Dest node conn id
Retransmit count CRC 4 octets
Retransmit count
Source node con id
Source node con id
Dest id 6 octets EOF 0x7E
Source id 6 octets  
Prev node id 6 octets
CRC 4 octets
EOF 0x7E

Table 6. Session frames

Name Query Session Request Session Accept Session Acknowledgment
< - 1 Octet (8 bits) -> < - 1 Octet (8 bits) -> <- 1 Octet (8 bits) -> < - 1 Octet (8 bits) -> < - 1 Octet (8 bits) ->
Start Deliminator = 0x7E Start Deliminator = 0x7E Start Deliminator = 0x7E Start Deliminator = 0x7E Start Deliminator = 0x7E
Destination Address 6 octets Destination Address 6 octets Destination Address 6 octets Destination Address 6 octets Destination Address 6 octets
Source Address 6 octets Source Address 6 octets Source Address 6 octets Source Address 6 octets Source Address 6 octets
Length 2 octets Length 2 octets Length 2 octets Length 2 octets Length 2 octets
Value 0x5000 Value 0x0040 Value 0x0040 Value 0x4000 Value 0x4000
Value 0x10 0x00 - 0x07 No Poll 0x80 -0x0F Send return packet 0x00 - 0x07 No Poll 0x80 -0x0F Send return packet 0x00 - 0x07 No Poll 0x80 -0x0F Send return packet 0x40 - 0x47 No Poll 0x48 -0x4F Send return packet
No Packets to accept 0?h No Packets to accept 0?h No Packets to accept 0?h No Packets to accept 0?h No Packets to accept N
Connection id 2 octets Connection id 2 octets Connection id 2 octets Connection id 2 octets Connection id 2 octets
Value 0x02 Ses Seq No Ses Seq No Ses Seq No Ses Seq No
Value 0x02 ACK Seq No ACK Seq No ACK Seq No ACK Seq No
Undefined Value 0x00 Value 0x00 0x80-0xF0 End message Undefined
Undefined Value 0x01 Value 0x02 DATA N octets Dest Node Con
Value 0x10 Response packet size Response packet size Dest Node Con
Value 0x00 Response packet size Response packet size CRC 4 octets
Undefined Value 0x00 Dest node conn id
Undefined Value 0x00 Dest node conn id
Undefined Value 0x10 CRC 4 octets
Undefined Value 0x10 EOF 0x7E
Value 0x10 ASCII Source name  
Value 0xXX ASCII Source name  
Value 0xXX ASCII Source name EOF 7Eh  
Value 0x10 ASCII Source name    
ASCII Dest name ASCII Source name    
ASCII Dest name ASCII Source name    
ASCII Dest name ASCII Source name    
ASCII Dest name ASCII Source name    
ASCII Dest name ASCII Source name    
ASCII Dest name ASCII Source name   Dest node con id  
ASCII Dest name ASCII Source name    
ASCII Dest name ASCII Source name   CRC 4 octets  
ASCII Dest name ASCII Source name    
ASCII Dest name ASCII Source name    
ASCII Dest name ASCII Source name    
ASCII Dest name ASCII Source name   EOF 0x7E  
ASCII Dest name ASCII Dest name      
ASCII Dest name ASCII Dest name      
ASCII Dest name ASCII Dest name      
ASCII Dest name ASCII Dest name      
Prev net con id ASCII Dest name      
Prev net con id ASCII Dest name      
Retransmit count ASCII Dest name      
Retransmit count ASCII Dest name      
Source node con id ASCII Dest name      
Source node con id ASCII Dest name      
Dest id ASCII Dest name      
Dest id ASCII Dest name      
Dest id ASCII Dest name      
Dest id ASCII Dest name      
Dest id ASCII Dest name      
Dest id ASCII Dest name      
Source id Dest node conn id      
Source id CRC      
Source id CRC      
Source id CRC      
Source id CRC      
Source id EOF 0x7E      
Prev node id        
Prev node id        
Prev node id        
Prev node id        
Prev node id        
Prev node id        
CRC        
CRC        
CRC        
CRC        
EOF 0x7E        
<<< Previous Home Next >>>
NetBIOS Session Management Protocol in IBM PC Networks Up Active Directory