Implementing CIFS

Figure 1.11a: Verification Query (RD == FALSE)

[Figure 1.11a: Query to an NBT node that is also the NBNS.]

RUBY sends a unicast query to node TERU asking about ANDOR. The RD bit is clear, so TERU does not check the NBNS database. It checks only the local name table and, finding no reference to the name ANDOR<20>, TERU sends a NEGATIVE NAME QUERY RESPONSE.

Figure 1.11b: Unicast Name Resolution Query (RD == TRUE)

[Figure 1.11b: Query to an NBT node that is also the NBNS.]

RUBY sends a unicast query to node TERU asking about ANDOR. The RD bit is set, so TERU checks the NBNS database, where it finds an entry for ANDOR<20>. TERU sends a POSITIVE NAME QUERY RESPONSE.