CURRENT_MEETING_REPORT_ Reported by Kaj Tesink/Bellcore Minutes of the Managing ATM with SNMP BOF (ATMMIB) The goal of the ATMMIB BOF was to determine if there was sufficient interest to create a working group to develop managed objects for ATM. Editor's Note (md): Following the IETF meeting this Group became a Working Group and took the name AToM MIB Working Group (ATOMMIB). Agenda o Overview, Proposed Charter. o Proposals. - ATM MIB Strawperson Proposal (Masuma Ahmed) - ATM ILMI (Keith McCloghrie) - SONET MIB (Kaj Tesink) Overview - Kaj Tesink Following unanimous agreement that a working group is necessary to develop managed objects related to ATM, Kaj identified the following ``terms of reference'' as the basis for the proposed Charter of the ATM MIB work effort: o Priority on ATM PVCs. o Keep the MIB small. o Priority is creation of an SNMPv1 managed objects. Support of SNMPv2 may be a future effort. o Difference between interface and end-to-end view of NM information for ATM. Kaj discussed the relationship of the proposed ATM MIB with physical layer MIBs. He suggested that the Working Group include work on the SONET MIB which was posted by Tracy Cox. The Trunk MIB Working Group which had developed MIBs for DS1/E1 and DS3/E3 no longer exists. Ayal Opher cautioned against assuming that the SONET MIB is ``done''. Since there are more implementations of SONET equipment, folks may pay more attention and have more comments on the proposed SONET MIB module. There was discussion on the different perspectives on ATM-related network management information: 1 o Local DTE view of ATM-based communication over the local interface. o Network view of the local interface. o End-to-end view of the communication path. o ATM Switch Management - both private and public. o ATM-based Service information - both private and public. These different perspectives drive identification of different sets of managed objects. Based on this discussion, a Charter was agreed upon, that directs the proposed Working Group to undertake work on ATM and SONET management. Proposals o ATMMIB Proposal - Masuma Ahmed Masuma gave an overview of a Bellcore strawperson proposal for an ATM MIB. See the copy of the viewgraphs for a detailed list of proposed management information. The strawperson MIB is based on the ILMI, and includes configuration information about the ATM interface, ATM layer statistics, but (unlike the ILMI) also VPL/VCL level performance information. Virtual Channel Links are the interfaces between two adjacent ATM devices. A Virtual Channel Connection is the set of VCLs used end-point to end-point. A VCL is identified by a Virtual Channel Identifier (VCI). Similarly, a Virtual Path Connection consists of VPLs, identified by VPIs. Issues identified during the discussion included: - Relation to the existing ILMI MIB (see Keith's talk). - The need for end-to-end PVC configuration information. - Modelling of ATM in relation to MIB II interfaces table. - Need to keep the MIB small. - Need to coordinate modeling of PVCs with FR MIB effort. - Need for AAL performance statistics. - Need for VPC/VCC level performance statistics. o ATM Forum ILMI - Keith McCloghrie Keith gave a presentation on the ATM Forum's Interim Local Management Interface ILMI, stressing that even though the ILMI uses SNMP packet formats, the purpose of the ILMI is not network management, but rather ``interface management''. However, since the management information needed for interface management is a subset of the information needed for network management, the ILMI's MIB should be appropriate for use by network management as well as for interface management. The ATM Forum's ILMI MIB was designed to be symmetric -- that is, to have the same MIB on each side of the interface. It currently contains read-only objects. The ILMI MIB contains information on the physical port (e.g.,operStatus), ATM Layer, ATM Cell, and 2 VPC/VCCs. There are no VCL or VPL level statistics in the ILMI. Keith recommended that the proposed IETF Working Group use the ILMI MIB as a base for the development of IETF ATM MIB(s). The management of the local interface should use a common MIB module/table/group. o SONET MIB - Kaj Tesink Kaj gave a short presentation of the SONET MIB. The SONET MIB has been posted as an Internet-Draft for a long time. It is consistent with other trunk MIBs. A minor change may be needed on table indexing. Interested people are encouraged to review this MIB. Internet-Draft: ``Definitions of Managed Objects for the SONET Interface Type'', Jan.1993, Tracy A. Cox, Kaj Tesink, . Conclusions of the BOF o There is interest in forming a Working Group to develop standard managed objects for ATM and SONET. o Deirdre Kostick suggested calling it the AToMMIB Working Group, with the ``o'' signifying SONET, and the ``AToM'' as a reminder to keep MIBs small(!). o It is likely that there will be multiple MIB modules for ATM developed to support the different management perspectives identified during the BOF. o The MIB module(s) for management for the local interface should build on the ATM forum ILMI MIB. Attendees Masuma Ahmed mxa@sabre.bellcore.com David Arneson arneson@ctron.com David Battle battle@cs.utk.edu Nutan Behki Nutan_Behki@qmail.newbridge.com Caralyn Brown cbrown@wellfleet.com Jack Brown jbrown@huachuca-emh8.army.mil Theodore Brunner tob@thumper.bellcore.com John Chang changj@ralvm6.vnet.ibm.com Anthony Chow chow_a@wwtc.timeplex.com George Clapp clapp@ameris.center.il.ameritech.com Michael Collins collinsms@es.net Tracy Cox tacox@sabre.bellcore.com James Davin davin@thumper.bellcore.com M.J. Dixon mjd@att.com 3 Kurt Dobbins kurtdob@ctron.com David Engel david@ods.com Kenneth Giusti kgiusti.chipcom.com Patrick Hanel hanel@yoyodyne.trs.ntc.nokia.com Juha Heinanen juha.heinanen@datanet.tele.fi Don Hofacker hofacker@dtedi.hq.aelc.af.mil Mark Kepke mak@fc.hp.com Moshe Kochinski moshek@FibHaifa.com Deirdre Kostick dck2@sabre.bellcore.com David Lovering lovering@bldrdoc.gov Andrew Malis malis_a@timeplex.com Jun Matsukata jm@eng.isas.ac.jp Keith McCloghrie kzm@hls.com Evan McGinnis bem@3com.com George Mouradian gvm@arch3.att.com Tom Nisbet nisbet@tt.com Bill Norton wbn@merit.edu Zbigniew Opalka zopalka@agile.com Ayal Opher aopher@synoptics.com Joe Pagan jrp@afterlife.ncsc.mil Michael Patton map@bbn.com Drew Perkins ddp@fore.com Venkat Rangan venkat@.metrix.com Kenneth Rodemann krr@qsun.att.com Dan Romascanu dan@lannet.com Marshall Rose mrose@dbc.mtview.ca.us Jon Saperia saperia@lkg.dec.com Andrew Schmidt ags@uius.edu Kanan Shah kshag@cmf.nrl.navy.mil Andrew Smith asmith@synoptics.com Subbu Subramaniam subbu@cup.hp.com Terry Sullivan terrys@newbridge.com Sally Tarquinio sallyt@gateway.mitre.org Kaj Tesink kaj@cc.bellcore.com Stephen Tsun snt@3com.com Mario Vecchi mpv@thumper.bellcore.com James Watt james@newbridge.com Peter Wilson peter_wilson@3com.com Yow-Wei Yao yao@chang.austin.ibm.com Kiho Yum kxy@nsd.3com.com 4