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Managing Cable Modems on the Hybrid
Fiber-Coaxial Network
After you have completed upstream and downstream configuration in
Modem Termination System for the First
modems (CMs) operate in the hybrid fiber-coaxial (HFC) network. You can set the following CM functions:
Section
"Activating Cable Modem
Authentication" section on page 5-2
"Activating Cable Modem Insertion
Interval" section on page 5-3
"Activating Cable Modem
Upstream Address Verification"
section on page 5-4
"Clearing Cable Modem Counters"
section on page 5-5
"Clearing Cable Modem Reset"
section on page 5-5
"Configuring Cable Modem
Registration Timeout" section on
page 5-6
"Configuring Dynamic Contention
Algorithms (Cable Insertion
Interval, Range, and Data Backoff)"
section on page 5-6
"Configuring the Dynamic Map
Advance Algorithm" section on
page 5-7
"Configuring Maximum Hosts
Attached to a Cable Modem"
section on page 5-8
"Configuring Per-Modem Filters"
section on page 5-8
"Configuring Sync Message
Interval" section on page 5-9
OL-2239-03
C H A P T E R
Time,"you have additional options to manage how your cable
Purpose
Provides instructions to require all CMs to return a known text
string to register with the CMTS and gain access to the network.
Limits the amount of time that a CM requests a channel for the first
time from the Cisco uBR7200 series.
Ensures that only CMs that have received DHCP leases through the
Cisco uBR7200 series CMTS can access the HFC network.
Clears the counters for the CMs in the station maintenance list.
Removes one or more CMs from the station maintenance list and
resets the cable modem (or all CMs) on the network.
Specifies the registration timeout interval for CMs connected to
the Cisco uBR7200 series CMTS.
Configures the algorithms that control the capacity of the
contention subchannel and how efficiently a given contention
subchannel capacity is used.
Enhances the upstream throughput from a CM connected to the
Cisco uBR7200 series CMTS. The system employs a new
algorithm that automatically tunes the lookahead time in MAC
allocation and management messages (MAPs), based on several
input parameters for the corresponding upstream channel.
Specifies the maximum number of hosts that can be attached to a
subscriber's CM.
Provides instructions to configure the Cisco uBR7200 series to
filter incoming packets from individual hosts or cable interfaces
based on the source Media Access Controller (MAC) or Internet
Protocol (IP) address.
Specifies the sync message interval between successive sync
message transmissions from the Cisco uBR7200 series CMTS.
Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide
5
Chapter 2, "Configuring the Cable
5-1
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