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Enhancements and Advancements in Cable Data Networks Management

This document outlines critical advancements and changes within the Internet Engineering Task Force's (IETF) framework for IP over Cable Data Networks, including significant updates to Subscriber Management MIB and other related components. Key topics include the transition to IPv6/SNMPv3 compliance, harmonization of DOCSIS/EuroModem standards, subscriber management controls, and the introduction of additional filtering criteria. This session aims to establish a pathway for Internet Drafts, improving network management and ensuring security within cable modem deployments.

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Enhancements and Advancements in Cable Data Networks Management

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  1. IP Over Cable Data Networks IETF-47 Michael StJohns Excite@Home

  2. Agenda • Agenda Bashing • RFC2669/2670 Advancement - StJohns • Subscriber Management MIB - StJohns • BPI MIB - Informational - Woundy • DOCSIS/EuroModem Harmonization - Woundy • DOCSIS DHCP - Woundy • Other Status - StJohns • Wrapup - StJohns

  3. RFC 2669/2670 Advancement Changes/Modifications to MIBs for IPv6/SNMPv3 compliance

  4. RFC Advancement - CD MIB • docsDevNmAccess - Deprecated in favor of coexistence document. • Need to determine whether interface access control necessary (docsDevNmAccessInterfaces) • docsDevSwServer, docsDevServerDhcp, docsDevServerTime, docsDevServerTftp, docsDevEvSyslog - Deprecated and replaced by IPv4orV6 typed objects

  5. CD MIB (cont) • docsDevEvThrottleAdminStatus, ...ThrottleInhibited, …ThrottleThreshold, …ThrottleInterval - Deprecated in favor of Notifications MIB • docsDevFilterLLCIfIndex, docsDevFilterIpIfIndex - Deprecated, replaced by interface bit mask and convenience objects • docsDevFilterIpContinue - Obsolete (?) Discuss

  6. CD MIB (cont) • Added optional table to AUGMENT docsDevFilterIpTable - IPv6 addr/mask objects • Added optional table to mirror docsDevCpeTable for IPv6 • Various language tweaks and corrections • Target: Internet Draft by 10 April 2000

  7. RF MIB • docsIfCmtsCmStatus - Deprecated, replaced by IPv4orV6 typed object • Need nominations for Counter64 objects • docsIfCmServiceTxSlotsImmed, …Ded? • docsIfCmtsCmStatusUnerroreds, …Correcteds, …Uncorrectables? • docsIfCmtsServiceInOctets? • Minor text tweaks • Target: Internet Draft by 10 April 2000

  8. Subscriber Management MIB M StJohns W Sawyer

  9. Subscriber Management • Background • Documents • MIB Structure • DOCSIS Changes

  10. Background • CMCI - Changes to support “host based” or CPE Controlled Cable Modems (CCCM) • Changes security model • Moves point of control to CMTS • CM no longer trusted device

  11. Documents • Subscriber Management MIB • Changes to DOCSIS CMCI • Changes to DOCSIS MAC • Support identification of CCCM modems • Support poison pill - hardware enforced shutdown of designated modems • Changes to config file • Additional TLVs to identify CMTS enforced filter sets

  12. Subscriber Management MIB - Structure • docsSubMgtCpeControlTable controls the population of subscriber host addresses behind a CM. • docsSubMgtCpeIpTable lists the CPE addresses which the CMTS believes exist or are permitted behind a CM. • docsSubMgtPktFilterTable specifies filtering criteria which can be applied to packets destined to or originating from a CM • docsSubMgtTcpUdpFilterTable augments docsSubMgtPktFilterTable with optional TCP or UDP port filtering criteria. • docsSubMgtCmFilterTable binds a CM to a filter set.

  13. Subscriber Management MIB • Registration TLV Support for upstream/downstream CM and CPE filter sets • Requires change to CMTS TLV MAC mechanism • Additional items to be added: • CCCM enrollment control • CCCM poison pill • Others? • Possible migration to CMTS centric provisioning? • LDAP Configuration store?

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