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CMTS to Cable Modem Network Topology
Figure 1 shows the physical relationship between the devices in the HFC network and the
Cisco uBR924 cable access router.
Figure 1
Proxy server
Sample Topology
ISP
WAN
100BT
100BT
100BT
Cisco
uBR7246
CMTS
100BT
Analog TV
Digital TV
Fiber node
(Telephone pole,
underground box)
IP-related
ATM, FDDI, 100BT...
ISP @ home...
MSD: Maintenance Service
Organization, Cable companies
Upconvertor
DS-RF 54-860 Mhz
Fiber
Transceiver
80 km
1000 ft
Distribution
Top
amplifier
amplifier
Troubleshooting Tips for the Cisco uBR924 Cable Access Router 7
List of Terms
Drop box
Cisco u BR904
cable modem
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