DHCP - REQUESTING an ip? AND DHCP vs NAT-PAT?

Node Man

Hi Everybody,
Is configuring a switch or router to request an IP covered in ICND1 or ICND2? I could have sworn it was covered in one of them, but I cant find anything anywhere. Just configing DHCP Pool.


Also, what is the difference between DHCP Pools and NAT-PAT? I mean i know nat-pat reduces the need public IP's and DHCP assigns IP's, but they seem similiar.

Thanks so much

Zartanasaurus

Configuring and verifying dhcp is listed in the exam topics so it's possible. I imagine they are focusing more on making a device into a dhcp server. Making an interface a dhcp client isn't particularly involved though. Just play around with your context sensitive help on an interface and I think you can figure it out. It's good to know how to do anyway since it's a quick and easy way to verify your dhcp config.

FLEOHB

I am not sure but I think DHCP is for local addresses and NAT is for external addresses

I would think PAT is not similar because it is a port based protocol

If I am wrong, someone please correct me

SecurityThroughObscurity

NAT/PAT ain't a protocol.

xXErebuS

Very basic information - DHCP is for Dynamically assigning IP addresses, NAT / PAT is translating one IP address to another.

I'm a laptop needing to get on the network so I get my IP from DHCP
Changing 192.168.1.100 to 78.96.34.82 = NAT
Changing all of your client's IP Addresses in your network (192.168.1.100-110) to 78.96.34.82 = PAT (associates a port to each translation).

EV42TMAN

for the CCNA you have to know how to configure DHCP and NAt/PAT from the SDM, not from the command line FYI