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Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide
OL-2239-05
Chapter1 Overview of Cisco uBR7200 Series Software
cops tcp window-size
technicians need specialized tools to resolve RF problems in the cable plant. Cisco Broadband
Troubleshooter 3.2 (CBT 3.2) is a simple, easy-to-use tool designed to accurately recognize and resolve
such issues.
Cisco IOS Release 12.3(9a)BC enhances support for the Cisco Broadband Troubleshooter (CBT)
Version 3.2 on the Cisco uBR7246VXR universal broadband, with newly supported interoperability for
the additional software features.
CBT 3.2 offers the following enhancements on the Cisco uBR7246VXR router:
• CBT 3.2 resolves the former caveat CSCee03388. This enable users to compare an upstream and
cable modem on the same trace window.
Formerly, trace windows could support the selection of up to three upstream or cable modems, but
the upstream(s) and cable modems could not be mixed. CBT 3.2 now supports three upstreams or
cable modems to be selected and mixed in the trace window.
For additional information about CBT 3.2, spectrum management and STM 1.1, refer to the following
documents on Cisco.com:
• Release Notes for Cisco Broadband Troubleshooter Release 3.2
http://www.cisco.com/en/US/products/sw/netmgtsw/ps530/prod_release_note09186a0080293344.html
• Spectrum Management for the Cisco CMTS
http://www.cisco.com/en/US/products/hw/cable/ps2217/products_feature_guide_chapter09186a00
8019b586.html
• Subscriber Traffic Management for the Cisco CMTS
http://www.cisco.com/en/US/products/hw/cable/ps2217/products_feature_guide09186a00801b17d
0.html
Cisco CMTS Static CPE Override
The cable submgmt default command enables Multiple Service Operators (MSOs) to override network
DHCP settings on CPE devices when performing troubleshooting with a laptop computer and console
connection to the Cisco universal broadband router.
For additional information about using the cable submgmt default command, refer to these documents
on Cisco.com:
• Cisco CMTS Static CPE Override
http://www.cisco.com/en/US/products/hw/cable/ps2217/prod_troubleshooting_guide09186a00802
84e08.html
• Cisco Broadband Cable Command Reference Guide
http://www.cisco.com/univercd/cc/td/doc/product/cable/bbccmref/index.htm
Fast Fault Detection
Cisco IOS Release 12.2(15)BC1 introduces support for Fast Fault Detection (FFD) on the Cisco
uBR7246VXR router. This feature improves performance and convergence times when performing N+1
redundancy switchovers by having the failing line card proactively notify the HCCP control system
about its failure. This results in a switchover occurring immediately upon a software fault, reducing the
downtime of the card and minimizing any interruptions in the traffic that is flowing across the card.