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- Network Management Area
-
- Director(s):
-
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- o James Davin: jrd@ptt.lcs.mit.edu
-
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- Area Summary reported by James Davin/MIT
-
- At the San Diego meeting of the IETF, seven working groups of the
- Network Management Area held one or more sessions throughout the week.
- Also, three Birds of a Feather sessions were held. Owing to a brief
- hiatus in pending MIB reviews, the SNMP Network Management Directorate
- did not meet.
-
- Chassis MIB Working Group (CHASSIS)
-
- The Chassis MIB Working Group met for the first time at the San Diego
- IETF meeting. This Working Group will produce a document describing MIB
- objects for use in a ``chassis'' --- which is a collection of
- traditionally discrete network devices packaged in a single cabinet and
- power supply. A chassis may comprise, for example, combinations of
- layer 1 repeater elements, MAC layer bridges, or internetwork layer
- routers.
-
- The Working Group discussed the optional items of its charter. It
- decided to address the instrumentation of power supplies and other
- physical properties of a chassis box by attempting to align existing
- proprietary MIBs in these areas. The co-chair will prepare a
- distillation of such MIBs for consideration at the next meeting.
-
- The Working Group also decided that development of an ``aggregation
- MIB'' for instrumenting aggregate properties of a collection of network
- elements was worthy of effort but that work in that direction should not
- be permitted to interfere with the highest priority goal of the Group
- --- to wit, a MIB to represent the mapping of logical network devices
- onto the physical components of a chassis.
-
- The Working Group heard two presentations about the possible shape of a
- chassis MIB. Draft documents will be prepared and discussed at the next
- meeting.
-
- DS1/DS3 MIB Working Group (TRUNKMIB)
-
- The TRUNKMIB Working Group is chartered to formulate any necessary
- revisions to the DS1 and DS3 transmission MIBs (RFC 1232 and RFC 1233)
- as these specifications are considered for elevation from Proposed
- Standard to Draft Standard status. The Group is considering those
- changes motivated by implementation experience and those motivated by
- the desire to align with relevant work within ANSI T1M1. The Working
- Group discussed what changes to the MIB might be desirable in order to
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- support both traditional transmission interfaces as well as proxy
- representation of discrete CSU/DSU devices. The Working Group also
- discussed identified conformance groupings of the MIB objects that
- better reflect existing implementations. A number of issues remain
- outstanding, and it is hoped that these can be resolved by an email
- discussion of revised drafts.
-
- Ethernet MIB Working Group (ETHERMIB)
-
- The Ethernet MIB Working Group met to continue its work on conformance
- issues related to the MIB for Ethernet-like transmission media.
- Discussion took a giant step forward with the presentation of data on
- the implementation of objects defined in the current Ethernet MIB. Based
- on this data, the Group decided to reduce significantly the number of
- required MIB objects. The Group also worked on documenting the
- rationale for remaining objects.
-
- Host Resources MIB BOF (HOSTMIB)
-
- A Birds of a Feather session on SNMP instrumentation of host resources
- was conducted by Steve Waldbusser of CMU. An emphasis in this discussion
- was the need for commonality among existing proprietary MIBs that
- instrument various types of resources frequently associated with
- internet hosts (e.g., processing capacity, memory, disk space). The
- consensus of those assembled was that internet hosts include not only
- Unix machines but also various types of personal computers. A number of
- participants attributed some urgency to the need for commonality in this
- area, and many felt that forward progress was desirable. Organization
- of a working group effort with a practical, limited scope and timeframe
- is likely.
-
- IEEE 802.3 Hub MIB Working Group (HUbmib)
-
- This Working Group met to discuss the current draft of a SNMP MIB for
- 802.3 Repeater devices. The Group resolved outstanding issues about the
- treatment of counter totals for repeater implementations whose physical
- configuration may change dynamically. The penultimate revision of the
- repeater MIB will be circulated via electronic mail for review by the
- Working Group members. The Working Group also discussed strategies for
- developing SNMP MIB instrumentation for 802.3 medium access units based
- on recent IEEE definitions.
-
- Internet Accounting Working Group (ACCT)
-
- This Working Group met in two sessions during the San Diego IETF meeting
- during which the efforts of the Group were effectively concluded. The
- final revision of the Accounting Architecture document will be prepared
- and reviewed by Working Group members via electronic mail. This
- document is intended for publication as an Informational RFC. An SNMP
- MIB to support the accounting architecture was discussed at the meeting.
- A final revision of this MIB definition will be prepared to reflect
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- comments made at the meeting and will be reviewed via electronic mail.
- The final MIB text is intended for publication as an Experimental RFC.
- With the successful completion of its charter, no further meetings of
- this Working Group are anticipated.
-
- Multiplexing SNMP Agents BOF (MPLXMIB)
-
- A Birds of a Feather session on composite SNMP agent implementations was
- conducted by Karl Auerbach of Sun Microsystems. The purpose of the
- session was to discuss the problem of SNMP agent implementations that
- may be composed of software units from different sources. A
- comprehensive list of technical issues and constraints was presented and
- discussed. At least five distinct approaches were identified as
- appropriate depending on the goals of the implementor, the
- implementation environment, or other circumstances:
-
- o Strategies based on SNMP proxy using SNMP security mechanisms,
- o SMUX (RFC 1227),
- o DPI (RFC 1228),
- o Application software conventions, and
- o Operating system software technologies.
-
-
- Remote LAN Monitoring Working Group (RMONMIB)
-
- This was both the final session of the RMONMIB Working Group and the
- first ``unofficial'' session of the Token Ring Remote Monitoring Working
- Group. Its Charter is to extend the work begun in the Remote LAN
- Monitoring MIB (RFC 1271) to the domain of IEEE 802.5 Token Ring media.
- The Group spent much of its time discussing the first draft of a MIB
- specification to support token ring monitoring. Among the issues raised
- was the extent to which the defined instrumentation ought to be oriented
- towards promiscuous or non-promiscuous models of token ring monitoring.
- Discussion of a revised version of the specification will continue at
- the next meeting.
-
- SNMP Agent Description BOF (SNMPAGEN)
-
- This BOF on the utility and desirability of the notation described in
- RFC 1303, was conducted by Dave Perkins of SynOptics. This notation is
- designed to document those respects in which a particular SNMP agent
- implementation may deviate from standardized protocol and MIB
- specifications. Part of the session was devoted to the identification
- and discussion of possible problems or improvements to the notation
- itself. A recurring theme of the session was whether the effect of the
- proposed notation would be more to document agent ``variations'' or more
- to document agent ``deficiencies.'' Opinion was mixed on this issue,
- and, accordingly, opinion was mixed on the desirability of this or like
- notations.
-
- X.25 Management Information Base Working Group (X25MIB)
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- The X.25 MIB Working Group met twice during the San Diego IETF meeting.
- One session focused on issues of MIB form and structure; another session
- focused on the X.25 protocol functionality being instrumented. Based on
- this discussion, a penultimate revision of the LAPB and X.25 Packet
- Layer MIBs will be circulated on the mailing list for final review and
- closure. A remaining task for this Working Group is to rework the MIB
- instrumenting IP over X.25 convergence functions to embrace recent work
- in the Internet Services Area on multiprotocol use of X.25.
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