4. DSL Router Configuration Examples
4-12 November 2003 6300-A2-GB20-10
DHCP Server with Basic NAT Configuration Example
In this DHCP Server with Basic NAT example:
The clients are using dynamic IP address assignment and use the Ethernet
interface (eth1) of the DSL router as the next hop router (default gateway).
The DSL interface (dsl1) must be numbered.
The DSL router is configured as the DHCP server providing 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 commands and syntax for this example are:
ip routing enable
ifn address eth1 10.1.3.10 255.255.255.240
ifn address dsl1 155.1.3.2 255.255.255.0
ip route create upstream eth1 155.1.3.1
nat basic address 155.1.3.0
nat basic enable
dhcp server addresses 10.1.3.2 10.1.3.9
dhcp server router 10.1.3.10
dhcp server nameserver 132.53.4.2
dhcp server enable
NOTES:
— The ip routing enable command is only required when using
firmware version 4.2.5 or higher.
— FUNI/MPOA (1483 routed) link encapsulation can be used with this
configuration and the DSL card Models 8304, 8314, 8344, and 8374. Lin k
encapsulation is configured on the DSL port. This link encapsulation must
match the core network encapsulation type. The ip route create
upstream command is not necessary when using FUNI/MPOA link
encapsulation.
01-16952
Customer Premises (CP)
DSL
Router
Hub
10.1.3.2
10.1.3.3
10.1.3.9
End-user
Systems
Console
Port
Connection
Ethernet
eth1
10.1.3.10
DSL
Core
Router
dsl1
155.1.3.2
WAN
155.1.3.1
DNS
Name
Server
132.53.4.2