5. Configuring the FrameSaver DSL Router

DHCP Server with NAT Configuration Example

NAT with DHCP Server

 

 

 

 

FrameSaver xDSL Router

Public

 

NAT

DHCP

Network

Public IP

Pool

 

 

 

 

 

Addresses

 

 

Private IP

Address

Ethernet

Private

Network

01-16924

In this DHCP Server with NAT example:

The clients are using dynamic IP address assignment and use the Ethernet interface of the router as the next hop router (default gateway).

The DHCP server assigns private IP addresses which are converted to public IP addresses by NAT.

The DSL interface must be numbered.

The router is configured as the DHCP server giving the private IP addresses

￿to the clients.

The Ethernet interface is in private address space. NAT is used for one-to-one mapping of addresses.

Public IP Addresses for NAT

Private IP Addresses

 

 

192.128.22.1

10.1.3.2

 

 

192.128.22.2

10.1.3.3

 

 

. . .

. . .

 

 

192.128.22.nnn

10.1.3.nnn

 

 

The command line syntax for this example, where x is the number configured for the sub-interface, is:

ip nat pool public 192.128.22.1 netmask 255.255.255.0 access-list 1 permit 10.1.1.0 0.0.0.255

ip nat inside source list 1 pool public interface ethernet 0

ip nat inside interface serial 0.x ip nat outside

5-12

December 2002

9700-A2-GB20-20

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Paradyne 9788, 9720 manual Dhcp Server with NAT Configuration Example, Public IP Addresses for NAT Private IP Addresses, Nat
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9720, 9788 specifications

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