Specifications

8 Release Notes for Cisco uBR904 Cable Access Router for Cisco IOS Release 12.0(7)T
New and Changed Information
• CISCO-SYSLOG-MIB
• CISCO-FLASH-MIB
• BRIDGE-MIB
• IF-MIB
• CiscoWorks/CiscoView
Note The Cisco Management Information Base (MIB) User Quick Reference publication is no
longer published. For the latest list of MIBs supported by Cisco, see the Cisco Network Management
Toolkit on Cisco Connection Online (CCO). From the CCO home page, click on this path: Service
& Support: Software Center: Network Mgmt Products: Cisco Network Management Toolkit:
Cisco MIB
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 cable access router 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 cable access router 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 decrypt the TEK.
For more information on this feature, refer to the DOCSIS Baseline Privacy Interface Specification
(SP-BPI-IO1-970922).
Easy IP
Dynamic Host Configuration Protocol (DHCP) Server:
With the introduction of Easy IP, Cisco IOS Release 12.0(3)T supports Intelligent DHCP Relay and
DHCP Client functionality. A DHCP Relay Agent is any host that forwards DHCP packets between
clients and servers. A DHCP Relay Agent enables the client and server to reside on separate subnets.
If the Cisco IOS DHCP server cannot satisfy a DHCP request from its own database, it can forward
the DHCP request to one or more secondary DHCP servers defined by the network administrator
using standard Cisco IOS IP helper-address functionality.
Network Address Translation and Port Address Translation (NAT/PAT):
• Allows customers to maintain their own private networks while giving them full Internet access
through the use of one or more global IP addresses
• Allows several private IP addresses to use the same global IP address by using address
overloading
• Facilitates configuration and permits a large network of users to reach the network by using one
Cisco uBR904 cable access router and the same DOCSIS cable interface IP address