List of Terms

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 Sample Topology

ISP

IP-related

WAN

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

80 km

1000 ft

Fiber node (Telephone pole, underground box)

Distribution Top

amplifier amplifier

Drop box

13304

Cisco u BR904

cable modem

Troubleshooting Tips for the Cisco uBR924 Cable Access Router 7

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Cisco Systems UBR924 manual Cmts to Cable Modem Network Topology