Libsmi October 2012

libsmi@ibr.cs.tu-bs.de

2 participants
2 discussions

smidump --format=smiv2 output contains some errors in compliance SYNTAX/WRITE-SYNTAX clauses.
by Jens Engel 06 Jun '13

06 Jun '13

Hello, I just stumbled over the following problem in libsmi 0.4.8 and development trunk-tip rev34557 (as of today). The problem resides in the SYNTAX/WRITE-SYNTAX clauses in COMPLIANCE statements. Instead of a "type" the invalid term "(null)" is present. AFFECTED-MIBS (at least): - BRIDGE-MIB - SNMP-VIEW-BASED-ACM-MIB - ... => grep "(null)" *-MIB EXAMPLE: smidump --format=smiv2 BRIDGE-MIB ... OBJECT dot1dStpPriority SYNTAX (null) (0 | 4096 | 8192 | 12288 | 16384 | 20480 | 24576 | 28672 | 32768 | 36864 | 40960 | 45056 | 49152 | 53248 | 57344 | 61440) ... OBJECT dot1dStpPortPriority SYNTAX (null) (0 | 16 | 32 | 48 | 64 | 80 | 96 | 112 | 128 | 144 | 160 | 176 | 192 | 208 | 224 | 240) BUT: Original BRIDGE-MIB that is distributed w/ libsmi contains: OBJECT dot1dStpPriority SYNTAX Integer32 (0 | 4096 | 8192 | 12288 | 16384 | 20480 | 24576 | 28672 | 32768 | 36864 | 40960 | 45056 | 49152 | 53248 | 57344 | 61440) ... OBJECT dot1dStpPortPriority SYNTAX Integer32 (0 | 16 | 32 | 48 | 64 | 80 | 96 | 112 | 128 | 144 | 160 | 176 | 192 | 208 | 224 | 240) smidump --format=smiv2 SNMP-VIEW-BASED-ACM-MIB ... OBJECT vacmViewTreeFamilyMask WRITE-SYNTAX (null) (SIZE(0)) ... SHOULD-BE (as in original MIB distributed with libsmi): ... OBJECT vacmViewTreeFamilyMask WRITE-SYNTAX OCTET STRING (SIZE(0)) I assume that smidump does not have the info (only a NULL pointer) and just dumps it as textual info. NOTE: "smidiff <ORIGINAL-MIB> <SMIDUMPED-MIB>" does not seem to show a difference (except warnings, ...). Ciao, Jens

3 2

MIB Errors
by Evgheni Antropov 02 Oct '12

02 Oct '12

Hello everybody I have a couple of issue, according with my own MIB file. I can divide error on 4 section: 1) [4] {group-membership} warning: node `Location' must be contained in at least one conformance group 2) [5] {group-unref} warning: current group `DNSGroup' is not referenced in this module 3) [2] {parent-scalar} scalar's parent node must be simple node 4) [5] {row-name-table-name} warning: row identifier `MetersTableEntry' should have the same prefix as table identifier `MetersTable' I cannot show my MIB File, but will try to explain it structure. I have about 100 nodes. Several of them are unite in groups, another - not. All of them consist in 2 main groups, which make connection with module-identity. In short I have follow structure: MODULE-IDENTITY -> OBJECT IDENTIFIER (2 different objects) | | | |-------> OBJECT-TYPE (several nodes) | | | |-------> TABLE (with index and several nodes OBJECT-TYPE) | |-----------> OBJECT-TYPE (several nodes) | |-----------> OBJECT-GROUP (several group) | | |---------> OBJECT-TYPE (several nodes) 1 section of error I have before MIB modification with adding OBJECT-GROUP. After adding groups I have received 2 and 3 section of errors. 4 section error regard only with table implementation. I have found all section of this errors on http://www.icir.org/fenner/mibs/htmllint/ and have checked all errors on this page http://www.icir.org/fenner/mibs/libsmi-errors, but unfortunately have not found any correct explanation how to fix those errors, except this one http://www.icir.org/fenner/mibs/libsmi-errors/group-membership.html . I have tried to understand RFC, but without any success. Also I have tried to compile MIB with specific soft, like MG-SOFT <http://www.mg-soft.si/> and it show only 4 section of error. I need to know if those warnings/errors are critical and if they can be fixed and how. All errors show on http://www.simpleweb.org/ietf/mibs/validate/ and http://www.ibr.cs.tu-bs.de/bin/smitools.cgi with severity level 3,4,5 and 6. During creation my own MIB file I have used for example DISMAN-PING-MIB which has not any errors in those online checks. If it's needed I will send my MIB file for better understand the issue. Thank you in advance. I will be glad for any help. WBR, Evgheni.

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Libsmi October 2012