Filter
Top Products
1-62
Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide
OL-2239-05
Chapter1 Overview of Cisco uBR7200 Series Software
Supported Software Features for the Cisco uBR7200 Series
Dynamic Map-Advance
A CMTS administrator can enhance the upstream throughput from a cable modem connected to the
Cisco CiscouBR7200series CMTS. The system employs a new algorithm that automatically tunes the
lookahead time in MAPs, based on several input parameters for the corresponding upstream channel.
The use of dynamic and optimal lookahead time in MAPs significantly improves the per-modem
upstream throughput.
For configuration information, refer to “Configuring the Dynamic Map Advance Algorithm” section on
page5-7.
Dynamic SID Support
For additional feature information, refer to the document titled Cisco uBR7200 - QoS/MAC
Enhancements for Voice and Fax Calls: DOCSIS 1.0+ on Cisco.com.
Fragmentation (Layer 2)
Layer 2 fragmentation on the upstream prevents large data packets from affecting real-time traffic, such
as voice and video. Large data packets are fragmented and then transmitted in the time slots that are
available between the time slots used for the real-time traffic.
Multiple SID Support
This feature consists of changes made to various show commands to expand service identifier (SID)
information.
• The show cable modem command has been changed to indicate that the SID shown is the primary
SID for each cable modem.
• The show interface cable command has been updated to include the secondary SIDs for each cable
modem.
For additional information, refer to Multiple Service ID Support for the Cisco uBR7200 Series Cable
Router on Cisco.com:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/120newft/120t/120t5/multisid.ht
m
Payload Header Suppression (PHS)
Payload Header Suppression (PHS) conserves link-layer bandwidth by suppressing unnecessary packet
headers on both upstream and downstream traffic flows.
To configure PHS, refer to the “Configuring Payload Header Suppression and Restoration” section on
page3-33. For additional information about configuring these and other DOCSIS features, refer to the
DOCSIS 1.1 for the Cisco uBR7200 Series Universal Broadband Routers feature module on Cisco.com:
http://www.cisco.com/univercd/cc/td/doc/product/cable/cab_rout/ub7200sw/index.htm
QoS Configuration
QoS configuration information is now included in the Cable Modem Database Manager, which is
described further in the document titled DOCSIS 1.1 for the Cisco uBR7200 Series Universal Broadband
Routers feature module on Cisco.com:
http://www.cisco.com/univercd/cc/td/doc/product/cable/cab_rout/ub7200sw/index.htm