Network Address Translation

Network Address
Translation
THE CCNP EXAM TOPICS COVERED IN THIS
CHAPTER INCLUDE THE FOLLOWING:


Understand how NAT and PAT work.


Learn how to configure static and dynamic NAT and PAT.


Learn how to use route maps to control NAT functions.

In the previous chapter, we discussed how to extend the life of the
IP address space and how VLSM and CIDR helped when using
IPv4. We also talked about IPv6 and how it will create more
address space in the future. In this chapter we will find out how
NAT (Network Address Translation)
and
PAT (Port Address Translation)
can also be used to extend the current address space
by translating one address to another and how this might help to alleviate shortage. We will also
talk about how to configure both dynamic and static NAT and PAT.
While Cisco doesn’t specifically mention NAT and PAT in their exam objectives,
it’s still very important that you learn the topics covered in this chapter.