IP Over Cable Data Networks

1
IP Over Cable Data Networks

• IETF-47
• Michael StJohns
• Excite_at_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?