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Paradyne CSU User Manual

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5. Configuring the FrameSaver SLV Router
5-12
  
September 
2002
9128-A2-GB20-80
DHCP Server with NAT Configuration Example
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 network 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.
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
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
NAT with DHCP Server
02-17300
NAT
Private IP
Address
Public IP
Addresses
DHCP
Pool
Public
Network
Ethernet
Private
Network
FrameSaver SLV Router