IPP Mail Archive: IPP> NOT - IPP MIB v0.2 for Notifications - 30 Aug 1999

IPP Mail Archive: IPP> NOT - IPP MIB v0.2 for Notifications - 30 Aug 1999

IPP> NOT - IPP MIB v0.2 for Notifications - 30 Aug 1999

Ira Mcdonald (imcdonal@sdsp.mc.xerox.com)
Mon, 30 Aug 1999 19:41:49 -0400

Hi folks, Monday (30 August 1999)

[For consideration during this week's regular IETF IPP WG telecon -
now aligned with the latest IPP Notification spec of 25 August 1999 -
but w/out 'job-complete' and 'job-progress' extra attribute bindings.]

For IPP Notifications over UDP (via SNMPv1, SNMPv2, or SNMPv3), I've
revised the *very* small IPP MIB and posted it on the PWG server at:


This MIB contains the following SNMP object groups:

Printer - 11 columnar objects (including 5 counters)
(Mandatory) (language, name, state, state reasons, state message)

Printer URI - 3 columnar objects (URI, authentication, security)
(Mandatory) (models 'printer-uri-supported', etc., in flat tables)

Event - 14 leaf objects
(Conditionally (printer/URI indices, trigger event, job bindings)
Mandatory) - 2 SNMP traps w/ a few optional bindings
(basic-printer-event, basic-job-event)

This MIB compiles without errors or warnings with Epilogue Emissary 7.0
and includes MODULE-COMPLIANCE and OBJECT-GROUP macros (conformance).

This MIB follows the 'Draft Standard' SNMPv3 MIBs (RFC 2571-2575) and
conveys all text in the 'UTF-8' charset (ISO 10646 / Unicode in a stream
encoding that is file-system and legacy programming language safe) via
the textual convention 'SnmpAdminString' (imported from RFC 2571, the
SNMP Framework MIB), since all IPP clients and printers MUST support
'UTF-8' anyway.

This MIB supports fast IPP Printer discovery via SNMP - by broadcast of
an SNMP GetNext for 'ippPrinterName' (to find all supporting systems -
although such a method does NOT scale well to large networks).

Because the (mandatory) Printer group contains five basic counters
(connections, requests, errors, warnings, notifications) as well as the
printer name, state, and state reasons, this MIB arguably satisfies the
'appropriate technology' criteria for IPP Printer network management
(w/out requiring the WWW Services MIB, RFC 2594, or any other MIBs).

- Ira McDonald
High North Inc

PS - [switch on PWG parochial mindset]
Also note, since IETF IPP and PWG Job Monitoring MIB are fully aligned,
the job-level trap in this small IPP MIB constitutes a clean job-level
trap augmentation for the PWG Job Monitoring MIB.