Cisco Cisco IOS Software Release 12.3(2)XF
11
Release Notes for Cisco uBR7100 Series for Cisco IOS Release 12.3 BC
OL-16010-07
System Requirements
Upgrading to a New Software Release
For general information about upgrading to a new software release, see Cisco IOS Upgrade Ordering
Instructions located at the following location on Cisco.com:
Instructions located at the following location on Cisco.com:
DOCSIS System Interoperability on the Cisco uBR7100 Series CMTS
This section describes the operation of primary interoperability features in the Cisco uBR7100 series
router. For additional DOCSIS information, refer to the following document on Cisco.com:
router. For additional DOCSIS information, refer to the following document on Cisco.com:
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DOCSIS 1.1 for the Cisco CMTS
DOCSIS 1.0 Baseline Privacy
DOCSIS baseline privacy interface (BPI) gives subscribers data privacy across the RF network,
encrypting traffic flows between the cable modem termination system (CMTS) and cable modem. BPI
ensures that a cable modem, uniquely identified by its Media Access Control (MAC) address, can obtain
keying material for services only it is authorized to access.
encrypting traffic flows between the cable modem termination system (CMTS) and cable modem. BPI
ensures that a cable modem, uniquely identified by its Media Access Control (MAC) address, can obtain
keying material for services only it is authorized to access.
To enable BPI, choose software at both the CMTS and cable modem that support this mode of operation.
Select a Cisco IOS image that supports BPI. BPI must be enabled using the DOCSIS configuration file.
Select a Cisco IOS image that supports BPI. BPI must be enabled using the DOCSIS configuration file.
The cable modem must also support BPI. Cable modems must have factory-installed RSA private/public
key pairs to support internal algorithms to generate key pairs prior to first BPI establishment.
key pairs to support internal algorithms to generate key pairs prior to first BPI establishment.
Note
RSA stands for Rivest, Shamir, and Adelman, inventors of a public-key cryptographic system.
Cable Modem Interoperability
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The Cisco uBR7100 series router supports DOCSIS-based two-way interoperability for cable
modems that support basic Internet access, VoIP, or Virtual Private Networks (VPNs).
modems that support basic Internet access, VoIP, or Virtual Private Networks (VPNs).
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EuroDOCSIS cable modems or set-top boxes (STBs) with integrated EuroDOCSIS CMs using
Cisco uBR-MC16E cable interface line cards and Cisco IOS Release 12.2(4)BC1 or higher.
EuroDOCSIS operation support includes 8-MHz Phase Alternating Line (PAL) or Systeme
Electronique Couleur Avec Memoire (SECAM) channel plans.
Cisco uBR-MC16E cable interface line cards and Cisco IOS Release 12.2(4)BC1 or higher.
EuroDOCSIS operation support includes 8-MHz Phase Alternating Line (PAL) or Systeme
Electronique Couleur Avec Memoire (SECAM) channel plans.
Note
Cisco IOS Release 12.3(21a)BC3 does not support telco-return cable modems or STBs.
Configuring the CMTS Cable Interface When in Routing Mode
If you have configured a Cisco cable modem (CM) for routing mode and are also using the cable-modem
dhcp-proxy nat command on the cable modem, you must configure the corresponding cable interface
on the Cisco uBR7100 series router with the cable dhcp-giaddr policy command. Otherwise, the cable
interface could flap and the CM could go offline unpredictably.
dhcp-proxy nat command on the cable modem, you must configure the corresponding cable interface
on the Cisco uBR7100 series router with the cable dhcp-giaddr policy command. Otherwise, the cable
interface could flap and the CM could go offline unpredictably.