Methods and apparatus are disclosed for defining and using associative
memory entries with force no-hit and priority indications of particular
use in implementing policy maps in communication devices. In one use, a
set of entries is determined based on a policy map with a force no-hit
indication being associated with one or more of the entries.
Additionally, programmable priority indications may be associated with
one or more of the entries, or with the associative memory devices,
associative memory banks, etc. The force no-hit indications are often
used in response to identified deny instructions in an access control
list or other policy map. A lookup operation is then performed on these
associative memory entries, with highest matching result or results
identified based on the programmed and/or implicit priority level
associated with the entries, or with the associative memory devices,
associative memory banks, etc.