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Release Notes for Cisco uBR904 Cable Access Router for Cisco IOS Release 11.3 NA 5

New Features In Release 11.3(4)NA

DOCSIS Baseline Privacy

The DOCSIS Baseline Privacy feature is based on the DOCSIS Baseline Privacy Interface

Speciﬁcation. It provides data privacy across the HFC network by encrypting trafﬁc ﬂows between

the Cisco uBR904 and the cable operator's CMTS.

Baseline Privacy security services are deﬁned as a set of extended services within the DOCSIS MAC

sublayer. Two new MAC management message types, BPKM-REQ and BPKM-RSP are employed

to support the Baseline Privacy Key Management (BPKM) protocol.

The BPKM protocol does not use authentication mechanisms such as passwords or digital

signatures; it provides basic protection of service by ensuring that a cable modem, uniquely

identiﬁed by its 48-bit IEEE MAC address, can only obtain keying material for services it is

authorized to access. The Cisco uBR904 is able to obtain two types of keys from the CMTS: the

Trafﬁc Exchange Key (TEK), which is used to encrypt and decrypt data packets, and the Key

Exchange Key (KEK), which is used to the decrypt the TEK.

For more information on this feature, refer to the DOCSIS Baseline Privacy Interface Speciﬁcation

(SP-BPI-IO1-970922).

New Features In Release 11.3(4)NA

The following new feature was introduced in the Cisco uBR904 for Cisco IOS Release 11.3(4)NA:

Cable Device MIB

The Cable Device MIB is for DOCSIS-compliant cable modems and Cable Modem Termination

Systems (CMTS). The Cable Device MIB records statistics related to the conﬁguration and status of

the cable modem. Statistics include an events log and device status. The following list details the

components of the Cable Device MIB:

• The docsDevBase group extends the MIB-II “system” group with objects needed for cable

device system management.

• The docsDevNmAccess group provides a minimum level of SNMP access security.

• The docsDevSoftware group provides information for network downloadable software

upgrades.

• The docsDevServer group provides information about the progress of interaction with various

provisioning servers.

• The docsDevEvent group provides information about the progress of reporting.

• The docsDevFilter group conﬁgures ﬁlters at link layer and IP layer for bridge data trafﬁc.

The Cable Device MIB is very similar to the RFI MIB in that both allow access to statistics; they are

different in that the Cable Device MIB reports statistics on the Cisco uBR904 cable access router,

and the RFI MIB reports statistics on the radio frequency transmissions over the cable television line.

Cisco Standard MIBs

The Cisco Standard MIBs consist of the following components:

• CISCO-PRODUCT-MIB

• CISCO-SYSLOG-MIB

• CISCO-FLASH-MIB

• BRIDGE-MIB

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