Understanding IP NAT: the options

[jp.ward16]

I'm beginning to understand IP NAT, but am not fully cognitive on the options, would someone translate them to easy?

Those options being:

extendable

no-alias

no-payload

vrf

In addition, what happens if you do not include inside or outside specification in your IP NAT statements?

Is it possible to overload the IP NAT outside ?

How would you code a statement to allow return traffic from inside to receive port 80 from an overload interface? 

[paul driver]

Hello

Have a look at this-

http://brbccie.blogspot.co.uk/2013/06/everything-nat.html

res

Paul

[jp.ward16]

Thanks!

[Rejohn Cuares]

I don't want to explain NAT in my own words as Cisco did a very good job in explaining this topic on the following documentations.

http://www.cisco.com/c/en/us/support/docs/ip/network-address-translation-nat/13772-12.html

http://www.cisco.com/c/en/us/tech/ip/network-address-translation-nat/index.html?referring_site=bodynav

http://www.cisco.com/c/en/us/support/docs/ip/network-address-translation-nat/6209-5.html?referring_site=bodynav

http://www.cisco.com/c/en/us/support/docs/ip/network-address-translation-nat/26704-nat-faq-00.html

http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipaddr/command/ipaddr-cr-book/ipaddr-i4.html