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TOPIC: NAT layer 2

NAT layer 2 12 years 11 months ago #13864


Can we implement a layer 2 to layer 3 address mapping in NAT(Windows based)


I want to mapp a certain MAC address to a particular IP address

Thanks in advance,

Re: NAT layer 2 12 years 11 months ago #13866

just curious about what are you trying to do??

maybe etherchannel in a windows device?
2 nics in the same device each with its own phisycal mac address sharing only one ip address??

Thats what I understand, if you want that, the nic driver must support it.

Static DHCP - Is that what you want ? 12 years 11 months ago #13877

I guess 'Static DHCP' pretty much explains and denotes what you are looking for. Having a Windows-run DHCP server assigning static IP address (on a MAC address-IP address mapping scheme) is pretty simple and can be done as follows .......

:arrow: Open the DHCP console on the server. (Go to Start | Programs | Administrative Tools | DHCP.)

:arrow: Open the scope where you want to create the reservation.

:arrow: Right-click the Reservations branch, and choose New Reservation.

:arrow: In the New Reservation dialog box, enter the MAC address of the client computer in the MAC Address text box.

:arrow: In the IP Address text box, enter the desired IP address.

:arrow: In the Reservation Name text box, enter a descriptive name for the reservation.

:arrow: Under Supported Types, indicate whether DHCP clients, BOOTP clients, or both will support the reservation.

:arrow: Click Add, and close all dialog boxes.

~Beerz n Cheerz !!! :twisted:

Re: NAT layer 2 12 years 11 months ago #13902


Thanks for your updates!!

havohej ---I am sorry not in making clear on what my goal is

I am trying to setup a network on which two machines have the same ip address;


PC1--windows XP---2 IP addresses bound to the NIC

PC2---Windows XP--1 IP address bound to NIC

- Both PC1 (primary IP) and PC2 IP contains same IP address.

When I try to ping from PC1 it goes thru the PC3(NAT) and reaches PC2 reply from

When I ping from PC2 to PC1 --It goes thru the PC3 but the reply should be from --

Routing could be enabled not a problem with that.

Hope so I am making it clear.

tHe-SwItCh ----I think that good one will test that and let you know

Thanks Guys :wink:
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