CURRENT_MEETING_REPORT_
Reported by Deirdre Kostick/Bellcore
Minutes of the SNA NAU Services MIB Working Group (SNANAU)
The SNANAU Working Group met to review the proposed MIB objects for APPC
(posted to the list 23 March 1994) and to discuss implementation
experience for the SNANAU MIB Internet-Draft ``Definitions of Managed
Objects for SNA NAUs'' (draft-ietf-snanau-snamib-03.txt).
APPC Overview
Mike Allen presented an overview of APPC and the APPC MIB proposal. The
APPC MIB overview charts that Mike presented at the meeting are
available via anonymous FTP from ibmstandards.cary.ibm.com as
/pub/standards/aiw/snasnmp/ietf29-appcmib-ov.ps (PostScript). Please
note that these charts are the ones presented at the meeting. They do
not reflect the changes that were proposed during the meeting.
APPC MIB Proposal Review
Recommendations summary:
o Change the Remote LU (RLU) Table to be indexed by a Node Admin
Index and a RLU index only. The current INDEX clause in the
proposed appcInRluAdminTable is:
INDEX f snaNodeAdminIndex, snaLuAdminLuIndex, appcInRluParLuIndex g
The LU 6.2 architecture describes remote LU definitions per local
LU; however, current implementations consolidate remote LU
definitions for all LUs on a node. The suggested changes reflect
current implementations.
o Separate RLU objects into Administrative and Operational tables
following the SNA NAU MIB design.
o Change the APPC Mode Table to be indexed by a Node Admin Index and
a mode index only. The current INDEX clause in the proposed
appcInMdTable is:
INDEX f snaNodeAdminIndex, snaLuAdminLuIndex, appcInMdRluIndex,
appcInMdModeIndex g
The suggested changes would reflect current implementations in
which modes are defined on a node basis.
o Separate mode objects into Admin and Oper tables; the current
proposal contains a mix.
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o The MIB should support creation/deletion of modes via SNMP. A set
of default values for a ``template'' mode is needed to support this
capability. Suggested alternatives for templates are:
- Add an object indicate mode template
- Specify a naming convention using the mode name object
- Specify an indexing convention
The mailing list will be polled to get feedback on the preferred
alternative.
o Change the Local TP Table to be indexed by a Node Admin Index and a
TP index. The current INDEX clause in the proposed table is:
INDEX f appcInLtpLuIndex, appcInLtpTpIndex g
o The MIB should support TP definition via SNMP. This change requires
development of a TP state model and use of AdminStatus and
RowStatus objects.
o Add objects reflecting how a TP starts and TP max queue depth.
Investigate the need for current TP incoming attach queue depths.
Add a TPname textual convention.
o Add objects for XID management.
o Follow-up questions for the mailing list:
- Are the recommended indexing changes to the RLU, APPC Mode, and
Local TP tables consistent with current implementations? The
mailing list and other implementors will be polled for
feedback. Mike Allen will discuss with the LU6.2 architects.
- Should the MIB contain an object that allows the agent to turn
off/on collection of counters. (The set of counters is to be
determined.)
- Should APPN-specific objects be included in the MIB? Examples
in the current proposal include: appcInfoRscv and
appcInMdSessEndTpName.
The rationale for supporting inclusion is that only cases
proposed are those for which APPN adds minimal information to
that required for T2.1 LEN. Doing this (and explicitly
providing a simple N/A value for LEN nodes) will simplify
implementation on APPN nodes.
SNA NAU MIB Implementation Experience
o The working group recommended changing the indexing for the
snaLuSessionTable in the SNA NAU MIB Internet-Draft
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(draft-ietf-snanau-snamib-03.txt). The proposed change is to index
the table by node, LU, RLU, and session. The link id which is
currently one of the table indices should become an accessible
object in the table.
There was consensus at the meeting that the remote LU index is
needed for efficient access to rows about APPC sessions, and we did
not want the APPC session table to be indexed differently from the
NAU MIB session table. The remote LU index will be defined as an
object in the row of the NAU MIB session table. For dependent LU
sessions, it will have a value of zero. A MIB fragment with the
proposed changes will be posted shortly.
o The definitions of the snaNodeLinkAdminSpecific and
snaNodeLinkOperSpecific objects should be revised to point to the
first accessible objects in the appropriate tables of the SDLC MIB.
The suggested revisions will be posted to the list for feedback and
review. If there is general consensus, a revised SNA NAU MIB
Internet-Draft will posted.
Next Steps
APPC MIB
14 April 94 Revised definitions (Mode, RLU, Local TP, and Conversation Tabl*
*es)
sent to Mike Allen
21 April 94 Revised draft posted to list
28 April 94 APPC MIB Internet-Draft posted
SNA NAU MIB
8 April 94 Post suggested changes to list to get feedback/review
27 April 94 Pending feedback, post revised Internet-Draft
Next Meeting
o A conference call may be scheduled to continue the MIB review.
Results of the call will be posted to the mailing list.
o The SNA NAU MIB Working Group may hold an interim meeting to
coincide with the AIW 27 June 94 meeting to continue the MIB
review.
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Attendees
Michael Allen moallen@vnet.ibm.com
Tony Bogovic tjb@bellcore.com
Jeff Case case@snmp.com
David Chen dchen@vnet.ibm.com
Frank Ciotti frankc@telxon.com
Wayne Clark wclark@cisco.com
Duane Harkness duaneh@atc.boeing.com
Paul Kingsley pmk@hpcsos.col.hp.com
Deirdre Kostick dck2@mail.bellcore.com
William Kwan kwan@crosscomm.com
Kevin Loo loo_k@timeplex.com
Shannon Nix snix@metaplex.com
Michael Otto mho@netlink.com
Andrew Pearson pearson@snmp.com
David Perkins dperkins@synoptics.com
Randy Presuhn randy@peer.com
Daniel Richard daniele@icon.qc.ca
Marshall T. Rose mrose.iesg@dbc.mtview.ca.us
Blair Sanders bbs@sanders.itg.ti.com
Barbara Sterling bjs@mcdata.com
David Walters walters@wg.com
Bert Wijnen wijnen@vnet.ibm.com
Stan Wong swong@vnet.ibm.com
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