CHAPTER
5-1
Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide
OL-2239-03
5
Managing Cable Modems on the Hybrid
Fiber-Coaxial Network
After you have completed upstream and downstream configuration in Chapter 2, “Configuring the Cable
Modem Termination System for the First Time,”you have additional options to manage how your cable
modems (CMs) operate in the hybrid fiber-coaxial (HFC) network. You can set the following CM functions:
Section Purpose
“Activating Cable Modem
Authentication” section on page 5-2
Provides instructions to require all CMs to return a known text
string to register with the CMTS and gain access to the network.
“Activating Cable Modem Insertion
Interval” section on page 5-3
Limits the amount of time that a CM requests a channel for the first
time from the Cisco
uBR7200 series.
“Activating Cable Modem
Upstream Address Verification”
section on page 5-4
Ensures that only CMs that have received DHCP leases through the
Cisco
uBR7200 series CMTS can access the HFC network.
“Clearing Cable Modem Counters”
section on page 5-5
Clears the counters for the CMs in the station maintenance list.
“Clearing Cable Modem Reset”
section on page 5-5
Removes one or more CMs from the station maintenance list and
resets the cable
modem (or all CMs) on the network.
“Configuring Cable Modem
Registration Timeout” section on
page 5-6
Specifies the registration timeout interval for CMs connected to
the Cisco
uBR7200 series CMTS.
“Configuring Dynamic Contention
Algorithms (Cable Insertion
Interval, Range, and Data Backoff)”
section on page 5-6
Configures the algorithms that control the capacity of the
contention subchannel and how efficiently a given contention
subchannel capacity is used.
“Configuring the Dynamic Map
Advance Algorithm” section on
page 5-7
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.
“Configuring Maximum Hosts
Attached to a Cable Modem”
section on page 5-8
Specifies the maximum number of hosts that can be attached to a
subscriber’s CM.
“Configuring Per-Modem Filters”
section on page 5-8
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.
“Configuring Sync Message
Interval” section on page 5-9
Specifies the sync message interval between successive sync
message transmissions from the Cisco
uBR7200 series CMTS.
To Next Page
Loading...
Need help?
General
