
DSL LAN Extender 200 User’s Guide
© 2002 Black Box Corporation
Page 35
Case (D) ISP servicing SOHOs, using DSL LAN Extender as uplink for an area
Network Structure:
Subnetwork 194.1.1.0 is at area center, where CP_ISP serves as the uplink for 194.1.1.0, 194.1.2.0, and
194.1.3.0. (CO_X denotes a DSL LAN Extender
configured as CO, CP_X as CP.)
A WAN router at ISP’s POP serves the connection to the Internet
Routing Capabilities:
Every machine in the chart can talk to any other machine.
Every machine in the chart can access the Internet.
Configurations:
All DSL LAN Extenders have RIP enabled.
All machines’ IP setting are shown in the chart.
All DSL LAN Extenders at 194.1.1.0 (CO_A, CO_B,.., CP_ISP) can be replaced by an IP Address
Translator.
Example Traffic Path:
PC_A1 sends to Internet: PC_A1
→
CP_A
→
CO_A
→
CP_ISP
→
CO_ISP
→
WAN Router
→
Internet
PC_X1 sends to Internet: PC_X1
→
CO_A
→
CP_ISP
→
CO_ISP
→
WAN Router
→
Internet
PC_Xn sends to Internet: PC_Xn
→
CP_ISP
→
CO_ISP
→
WAN Router
→
Internet
Subnetwork 194.1.0.0 (ISP POP in CO)
PC_X1
IP: 194.1.1.11
GW: 194.1.1.2
CO_A
IP: 194.1.1.2
GW: 194.1.1.1
CO_B
IP: 194.1.1.3
GW: 194.1.1.1
CP_A
IP: 194.1.2.1
GW: 0.0.
0.0
CP_B
IP: 194.1.3.1
GW: 0.0.0.0
PC_A1
IP: 194.1.2.2
GW: 194.1.2.1
.
.
.
.
.
.
.
.
.
Subnet
194.1.2.0
Subnet
194.1.1.0
PC_Xn
IP: 194.1.1.12
GW: 194.1.1.1
Subnet
194.1.3.0
PC_B1
IP: 194.1.3.2
GW: 194.1.3.1
.
.
.
Internet
CP_ISP
IP: 194.1.1.1
GW: 0.0.0.0
CO_ISP
IP: 194.1.0.2
GW: 194.1.0.1
WAN Router
IP: 194.1.0.1
GW: x.x.x.x