2.3.5 IP over Cable Data Network (ipcdn)

NOTE: This charter is a snapshot of the 51st IETF Meeting in London, England. It may now be out-of-date. Last Modified: 31-Jul-01


Richard Woundy <rwoundy@cisco.com>
Andrew Valentine <a.valentine@eu.hns.com>

Internet Area Director(s):

Thomas Narten <narten@raleigh.ibm.com>
Erik Nordmark <nordmark@eng.sun.com>

Internet Area Advisor:

Thomas Narten <narten@raleigh.ibm.com>

Mailing Lists:

General Discussion:ipcdn@ietf.org
To Subscribe: http://www.ietf.org/mailman/listinfo/ipcdn
Archive: ftp://ftp.ietf.org/ietf-mail-archive/ipcdn

Description of Working Group:

The IETF IPCDN Working Group develops and standardizes SNMP MIBs for IP-capable data-over-cable systems, for example cable modems and associated cable-data equipment in a Headend. These MIBs cover not only cable data interfaces, but also management of cable-data equipment and systems.

The WG is also a forum for discussion of Internet-related issues in data-over-cable equipment and systems. In the event of a particular new Internet technology issue arising in the cable-data context, the WG will identify whether that is best handled within the IETF or is best handled by another standards body. In the event that new IETF work is identified, such items MAY be added that to the WG's charter, subject to normal IETF processes. Standardisation of MIBs for the EuroModem cable modem is within the scope of the IPCDN Working Group. Harmonisation of EuroModem MIBs and DOCSIS MIBs is desirable and will be examined by the IPCDN WG.

The IPCDN WG will also keep informed on what other groups in the industry are doing as it relates to the work of this working group.

Related groups:

The IEEE 802.14 WG was chartered to specify the physical layer and data link layer protocols for the CATV Data Network. The IEEE has discontinued the IEEE 802.14 effort, so that group no longer exists.

DOCSIS has completed its 1.0 versions of Data over Cable standards and is in the process of refining these standards to add additional functionality and to repair any flaws discovered in operational use. The IPCDN WG will update the documents produced which track the 1.0 versions accordingly. These include the RF Interface MIB and the Cable Device MIB. In addition, the operational and management issues of multicast over a Cable Data Network will be addressed.

Work items:

The IPCDN WG will address issues related to network management, especially as they concern HFC access networks. It is expected that other services (i.e. RSVP, IPSEC, etc.) will operate mostly unmodified.

- a MIB for managing the Telephone Modem Return Path (Telco Return) for 1-way cable modems. (draft-ietf-ipcdn-tri-mib-01.txt)

- a MIB for managing the Baseline Privacy system for DOCSIS. (draft-ietf-ipcdn-bpi-mib-01.txt), (draft-ietf-ipcdn-bpiplus-mib-00.txt)

- a MIB for managing the Quality of Service parameters for a Cable Data Network. (draft-ietf-ipcdn-qos-mib-02.txt)

- a MIB for managing Multicast (IGMP) over a Cable Data Network. (draft-ietf-ipcdn-igmp-mib-00.txt)

- a MIB for CMTS based customer management (draft-ietf-ipcdn-subscriber-mib-00.txt)

- Revisions to the Proposed Standard RF and CM MIBs to address SNMPv3 and IPv6 compliance and interoperability issues.

Goals and Milestones:



Post final I-D on Baseline Privacy MIB; Last call

Feb 00


Post I-Ds revising RF and CM MIBs to support DOCSIS1.1 and for compliance with SNMPv3 and IPv6



Submit Baseline Privacy MIB to IESG for publication as a Standards Track RFC

Feb 00


Submit updated RF and CM MIBs to IESG with implementation statement for advancement to Draft Standard

Jun 00


Revaluate charter and milestones.

Request For Comments:






Cable Device Management Information Base for DOCSIS compliant Cable Modems and Cable Modem Termination Systems



Radio Frequency (RF) Interface Management Information Base for MCNS/DOCSIS compliant RF interfaces



Baseline Privacy Interface Management Information Base for DOCSIS Compliant Cable Modems and Cable Modem Termination Systems

Current Meeting Report

IPCDN WG Minutes, August 9, 2001

The WG meeting was very short as there was only one I-D author present and less than a dozen attendees. Due to the lack of I-D authors present, the WG chair could only report the current status of the WG I-Ds (see slides) and was unable to agree timescales for completion of outstanding I-Ds with the exception of the DVB MIBs.

The WG chair explained to the WG that due to various factors, the slow adoption of DVB Cable return channel meant that is would not be possible to produce standards track RFCs for the DVB MIBs as there were not enough implementors. The AD (Thomas Narten) suggested that it may be possible to publish the DVB I-Ds as informational with a caveat in them stating they did not complete the IETF process and should anyone wish to implement them, the MIBs should be resubmitted to the IETF and the work finished.