CHAPTER
4-1
Cisco uBR10012 Universal Broadband Router Software Configuration Guide
OL-1520-05
4
Managing Cable Modems on the Hybrid Fiber-Coaxial Network
Note Writer’s Note - Reinstate all topics/procedures that were removed for uBR10K SCG. Use the
previous uBR7200 SCG as first source. Verify that interface examples are taken from uBR7200, not
from uBR10K. This chapter ready for update, and is confirmed for this pending edition.
After you have completed upstream and downstream configuration in Chapter3, “Configuring Cable
Interface Features for the CiscouBR10012Router,” you have additional options to manage how your
CMs operate in the hybrid fiber-coaxial (HFC) network. You can set the following CM functions:
Section Purpose
“Activating CM Authentication”
section on page4 Configures the CiscouBR10000series CMTS to require all CMs
to return a known text string to register with the CMTS and gain
access to the network.
“Activating CM Authentication”
section on page2 Configures the CiscouBR10000series CMTS to require all CMs
to return a known text string to register with the CMTS and gain
access to the network.
“Activating CM Insertion Interval”
section on page3 Limits the amount of time that a CM requests a channel for the
first time from the CiscouBR10012router. (A CM's initial
channel request is known as insertion.)
“Activating CM Upstream Address
Verification” section on page5 Ensures that only CMs that have received DHCP leases through
the CiscouBR10000series CMTS can access the HFC network.
“Clearing CM Counters” section
on page5 Clears the counters for the CMs in the station maintenance list.
“Clearing CM Reset” section on
page6 Removes one or more CMs from the station maintenance list and
resets the cablemodem (or all CMs) on the network.
“Configuring CM Registration
Timeout” section on page7 Specifies the registration timeout interval for CMs connected to
the CiscouBR10012router.
“Configuring Dynamic Contention
Algorithms (Cable Insertion
Interval, Range, and Data
Backoff)” section on page7
Configures the algorithms that control the capacity of the
contention subchannel and how efficiently a given contention
subchannel capacity is used.