Cisco UBR904 Troubleshooting Guide - Page 4
CMTS to Cable Modem Network Topology - ios
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CMTS to Cable Modem Network Topology CMTS to Cable Modem Network Topology Figure 1 shows the physical relationship between the devices in the HFC network and the cable modem. Figure 1 Sample Topology ISP WAN IP-related ATM, FDDI, 100BT... 100BT Proxy server Cisco uBR7246 CMTS Analog TV 100BT 100BT ISP @ home... 100BT MSD: Maintenance Service Organization, Cable companies Upconvertor DS-RF 54-860 Mhz Digital TV Fiber Transceiver Fiber node (Telephone pole, underground box) 80 km 1000 ft Distribution Top amplifier amplifier Drop box 13304 Cisco u BR904 cable modem 4 Cisco IOS Release 12.0(3)T
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CMTS to Cable Modem Network Topology
4
Cisco IOS Release 12.0(3)T
CMTS to Cable Modem Network Topology
Figure 1 shows the physical relationship between the devices in the HFC network and the cable
modem.
Figure 1
Sample Topology
IP-related
ATM, FDDI, 100BT...
100BT
Analog TV
Digital TV
Upconvertor
ISP
@ home...
DS-RF 54-860 Mhz
Fiber
Transceiver
80 km
Fiber node
(Telephone pole,
underground box)
Distribution
amplifier
Top
amplifier
1000 ft
Drop box
Cisco u BR904
cable modem
100BT
100BT
100BT
Proxy server
ISP
WAN
Cisco
uBR7246
CMTS
MSD: Maintenance Service
Organization, Cable companies
13304