IPCDN Working GroupPage 1
IPCDN WG Update
Richard Woundy
Jean-François Mulé
IPCDN Co-Chairs
IPCDN Working GroupPage 2
Meeting Agenda
• Agenda Bashing• Review of Interim Meeting (February 13 in Colorado)• DOCSIS MIB Updates
• 5 WG drafts under revision• DOCSIS IGMP MIB is expiring• Impact of transition of IP ToS to DSCP – “mask” issue
• PacketCable/IPCablecom MIB Updates• 3 WG drafts under revision• In-depth review of PacketCable MTA MIB
• CableHome Updates• 6 drafts – currently all individual submissions, multiple authors• Approve as WG work items?
• DOCSIS Set-Top Gateway Discussion• Recommend to postpone
• Administration• Re-Chartering• WG next steps: reviews and last-calls
IPCDN Working GroupPage 3
Recent WG Progress
• Draft review status– Subscriber Management MIB completes MIB doctor review!
» Still need to close on “DSCP Mask” issue
– DOCSIS IGMP MIB is stalled» Requires development of MIB compliance statement» Retract draft from the Area Director, bring back to the WG
• Internet-draft management issues– Two previously-expired drafts have now been refreshed
» DOCSIS Event Notification MIB, DOCSIS QoS MIB
– 22 internet-draft submissions since November ’02 IETF» Includes multiple draft versions; 13 unique internet-drafts
– SNMP boilerplates modified in late December/early January– Guidelines for MIB Authors and Reviewers
» draft-ietf-ops-mib-review-guidelines-01.txt
• Launched IPCDN WG additional website– http://www.ipcdn.org (comments are welcomed)
• Interim meeting in February in Louisville, Colorado
IPCDN Working GroupPage 4
Interim Meeting Review
• Meeting Summary– Eighteen attendees for six hour face-to-face interactive meeting
– Thanks to Bert Wijnen for voluminous MIB doctor comments
• Meeting Discussion Topics– BPI+ MIB reviewed in depth
– DOCSIS QoS MIB reviewed in depth
– Subscriber Management MIB overview» Accepted by MIB doctor, although DSCP issue raised afterwards
– DOCSIS Cable Device MIB overview
– DOCSIS 2.0 RFI MIB overview
– DOCSIS Event Notification MIB overview
– Background discussion on the DOCSIS Set-Top Gateway MIB
– CableHome MIB introduction and overview
• Minutes available online– http://www.ipcdn.org/meetings/ipcdn-minutes-021303.html
IPCDN Working GroupPage 5
• Most Recent Internet Drafts– draft-ietf-ipcdn-bpiplus-mib-08.txt
– draft-ietf-ipcdn-device-mibv2-05.txt
– draft-ietf-ipcdn-docsisevent-mib-03.txt
– draft-ietf-ipcdn-docs-rfmibv2-06.txt
– draft-ietf-ipcdn-qos-mib-08.txt
– draft-ietf-ipcdn-subscriber-mib-10.txt
• DOCSIS BPI+ MIB– Draft –08 reviewed in depth at the interim meeting
– Draft –09 will incorporate extensive comments from interim meeting
• DOCSIS Cable Device MIB– Draft –04 discussed at the interim meeting
– Draft –05 incorporated new CM/CMTS compliance statements, added docsDevFilterInetTable, docsDevFilterDscpTable, and docsDevInetCpeGroup, and deleted VACM extension objects
DOCSIS Submissions 1
IPCDN Working GroupPage 6
DOCSIS Submissions 2• DOCSIS Event Notification MIB
– Draft –03 discussed at the interim meeting
– Draft –04 will incorporate minor comments from interim meeting
– This draft requires in-depth WG review
• DOCSIS 2.0 RFI MIB– Draft –05 discussed at the interim meeting
– Draft –06 incorporated comments from interim meeting
– Module name needs to revert to DOCS-IF-MIB
– This draft requires in-depth WG review
• DOCSIS QoS MIB– Draft –07 reviewed in depth at the interim meeting
– Draft –08 incorporated extensive comments from interim meeting
– DOCSIS 1.1/2.0 QoS protocols supports IP ToS instead of DSCP
IPCDN Working GroupPage 7
DOCSIS Submissions 3• DOCSIS Subscriber Management MIB
– Draft –08 discussed at the interim meeting
– Draft –09 changed module name to prevent namespace conflicts between the RFC version and the already-deployed CableLabs version
– Draft –10 changed the 8-bit TosValue/TosMask to a 6-bit Dscp/Mask
IPCDN Working GroupPage 8
• RFC 2474: IP ToS field replaced by Differentiated Services (DS) field
• RFC 3168: Remaining bits assigned for explicit congestion notification
• RFC 2780/RFC 3260 clarifies semantics of DS field• RFC 3289 defines the DiffServ MIB and “Dscp” textual-
convention• DiffServ mandates certain per-hop behaviors; but only
recommends DSCPs• DiffServ WG recommends strongly against “DSCP masks”
Related DiffServ Efforts
IPCDN Working GroupPage 9
DOCSIS / DiffServ Interactions• RFC 2669 defines IP ToS + Mask for traffic classification,
and defines And-Mask + Or-Mask for IP ToS overwrites• DOCSIS 1.1 RFI defines IP ToS Range + Mask for traffic
classification, and defines And-Mask + Or-Mask for IP ToS overwrites
• Cable Device MIB and Subscriber Management MIB internet-draft both used IP ToS instead of Dscp objects until recent versions– Cable Device MIB defines Dscp object
– Subscriber Management MIB defines Dscp + Mask objects
• Center of controversy is over “DSCP Mask” objects• DOCSIS QoS MIB seems to require IP ToS objects for
DOCSIS 1.1 support• Recent efforts begun to incorporate DiffServ into DOCSIS
standards
IPCDN Working GroupPage 10
PacketCable/IPCablecom Update 1• New Internet-Drafts
– draft-ietf-ipcdn-pktc-eventmess-01.txt– Need more frequent draft updates, and deeper draft reviews
• MTA MIB review summary– Fix issues discovered by (better) SMICng compilation– Conform to new MIB boilerplates, internet-draft requirements
» http://www.ipcdn.org/ipcdn-id-hints.html
– Fix erroneous comments in MIB, due to text wrap-around– Clean up glossary and references (normative versus informative)– Align with RFC 3495 (CCC DHCP option and DHCP option 6)– Correct errors in MODULE-IDENTITY (contact info, copyright)– Resolve naming of X.509 certificate TEXTUAL-CONVENTION
» Use new name DocsX509ASN1DEREncodedCertificate
– Resolve issues with RealmTable, CmsTable» Use integer index objects instead of Realm names and FQDNs» Add more DESCRIPTION text for RowStatus objects» Add StorageType objects?
– Resolve use of TFTP URL for firmware download– Resolve numerous comments on object SYNTAX
IPCDN Working GroupPage 11
PacketCable/IPCablecom Update 2• MTA Signaling MIB review summary - pktcSigMib
– Fix minor issues discovered by SMICng compilation» Revision and last-update dates for MODULE-IDENTITY pktcSigMib
» Object names longer than 32 chars
– General Comments» Conform to new MIB boilerplates, internet-draft requirements
• http://www.ipcdn.org/ipcdn-id-hints.html
» Fix MIB root, copyright statements
» Clean up glossary and references (normative versus informative)
– Align Codec encoding names with current IETF AVT RTP AVP profile– PktcSigType TEXTUAL-CONVENTION: remove references to DCS? – TOS vs. DSCP: For pktcSigDefCallSigTos and
pktcSigDefMediaStreamTos, replace TOS with DSCP and use Dscp Textual-Convention
– pktcNcsEndPntConfigCallAgentId should indicate when the call agent DNS name should be resolved
– pktcNcsEndPntStatusError description should be enhanced– Compliance statement and pktcInternationalGroup for IPCableCom?
IPCDN Working GroupPage 12
PacketCable/IPCablecom Update 3
Syslog mib’s SyslogSeverity:
emergency (0), -- system is unusable
alert (1), -- action must be taken immediately
critical (2), -- critical conditions
error (3), -- error conditions
warning (4), -- warning conditions
notice (5), -- normal but significant condition
info (6), -- informational
debug (7), -- debug-level messages
other (99) -- None of the above
pktcDevEvProgrammableLevel
critical(1) service-affecting, requires immediate corrective action
major(2) service-affecting, requires urgent corrective action
minor(3) non-service-affecting
warning(4)
information(5)
• Management Event MIB review summary
– MIB updated in January 2003, fixed boilerplate & 3 SMICng warnings
– General Comments (Fix MIB root & copyright statements)
– InetAddress descriptions must link to InetAddressType objects
– Any opinions w.r.t. syslog MIB?
»Management Event MIB allows for multiple transport protocols (local, syslog, traps, inform, …), syslog transport, logging severity?
IPCDN Working GroupPage 13
CableHome Updates 1• Individual submissions from CableLabs, YAS, and
CableHome vendors• Address Mapping MIB
– draft-jones-cable-gateway-addressing-mib-02.txt
• Configuration MIB– draft-jones-cable-gateway-config-mib-02.txt
• Gateway Device MIB– draft-jones-cable-gateway-device-mib-02.txt
• CableHome QoS MIB– draft-jones-cable-gateway-qos-mib-01.txt
– New since November ‘02 IETF
• Security MIB– draft-jones-cable-gateway-security-mib-02.txt
• Remote Diagnostic Tools MIB– draft-jones-cable-gateway-tools-mib-02.txt
IPCDN Working GroupPage 14
CableHome Updates 2
• Draft authorship and participation– Original submissions all authored by Doug Jones/YAS– New co-authors include representatives from
CableLabs, Ashley Laurent, Linksys, Motorola, and TI– Two sets of draft submissions since November ‘02 IETF
• Some object overlap to be resolved– draft-ietf-dhc-server-mib-08.txt– draft-ietf-nat-natmib-05.txt; draft is expired???
• Assumption is that we add them to the charter– Any objections?
IPCDN Working GroupPage 15
IPCDN WG Next Steps 1• Resolve “DSCP mask” issue
–Impacts Subscriber Management and Cable Device MIBs
• Publish Subscriber Management MIB draft for IETF last-call• Prepare DOCSIS MIB drafts for working group last-call
–DOCSIS 2.0 RFI MIB, Cable Device MIB, DOCSIS QoS MIB, Event Notification MIB, and BPI+ MIB
• Resolve ownership of DOCSIS IGMP MIB compliance statements, and issue another draft version
–Retract draft from the Area Director, bring back to the WG
• Review PacketCable/IPCablecom MIBs in depth• Review CableHome MIBs for technical correctness• Obtain author feedback on reasonable draft milestones• Align milestones with relevant CableLabs certification
waves• Obtain IESG agreement on new charter
IPCDN Working GroupPage 16
IPCDN WG Next Steps 2• Next steps for WG authors
–Help the chairs define reasonable milestones for charter–Make frequent draft updates – and don’t let drafts expire–Conform to internet-draft requirements (e.g. SNMP boilerplates, normative vs. information references, MIB guidelines)–Prepare drafts for working group last-call, etc.–Respond in a timely manner to MIB doctor comments, and help us resolve them–Let the chairs know when you need help
• Next steps for WG participants–Review DOCSIS MIBs in depth for WG last-call–Review PacketCable/IPCableCom MIBs in depth for WG last-call–Read and review CableHome MIBs for technical correctness–Provide technical comments on the ipcdn mailing list, not just privately to draft authors–Provide comments on the IPCDN recharter
Top Related