How PAT works

Hi All,

  I was going through the NAT FAQ link as pasted below to understand how PAT
works in cisco devices.I was able to understand the explanation stated
except the below point highlighted.What is the meaning of that ?..Kindly
help me to understand the same.

http://www.cisco.com/en/US/tech/tk648/tk361/technologies_q_and_a_item09186a00800e523b.shtml#qa12

*"If PAT knows about the traffic type, and that traffic type has "a set of
specific ports or ports it negotiates" that it will use, PAT sets them aside
and does not allocate them as unique identifiers"*
**
Thanks for the help

Regards
Anantha Subramanian Natarajan

Blogs and organic groups at http://www.ccie.net
Received on Fri Aug 28 2009 - 12:12:39 ART