Configuring the DSL Router
3-3
6371-A2-GB20-00
March 2000
Numbered DSL Interface
In this scenario, the hosts attached to the DSL router’s Ethernet interface are on
a different logical network than the core router. The DSL router is the next hop
router for the hosts. The upstream next hop router for the DSL router is the core
router.
99-16609
DSL
Router
WAN
Core
Router
Host
(End Users)
Simplified Network Topology
The hosts can be assigned IP addresses on the network attached to the DSL
router’s Ethernet interface. The upstream next hop router is assigned an address
on a different logical network than the hosts.
Actions required to configure the DSL router interfaces in this scenario:
H
Assign IP address to Ethernet interface: e0
H
Assign IP address to DSL interface: d0
H
Assign upstream next hop router
Unnumbered DSL Interface
In this LAN extension application scenario, the hosts connected to a corporate
network for virtual office connection or teleworkers want to look like they are on
the same network as the core router. The core router will be the next hop router
for the hosts.
Actions required to configure the DSL router interfaces in this scenario:
H
Assign IP address to Ethernet interface: e0
H
Specify the DSL interface as unnumbered: d0
H
Assign upstream next hop router
H
Enable Proxy ARP for both the e0 and d0 interfaces
H
Disable scoping at the DSL card
