'Re: Where to find SNMP MIB files close to root?'

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List:       net-snmp-users
Subject:    Re: Where to find SNMP MIB files close to root?
From:       Martin T <m4rtntns () gmail ! com>
Date:       2015-07-10 8:48:21
Message-ID: CAJx5YvFeZq3CU9wn-FP9FLFcyy2Wtvbf-MAjQYRva9zrFGXBXw () mail ! gmail ! com
[Download RAW message or body]

Jean-Marc,

sorry, I think my initial e-mail was bit unclear. I am aware that
.iso.org.dod(.1.3.6) is an OID, not a MIB. What I meant with the
output of "snmptranslate -IR -On -Td internet" is that in case I had
standard bodies MIBs installed, the output of snmptranslate would be:

$ snmptranslate -IR -On -Td internet 2>/dev/null
.1.3.6.1
internet OBJECT-TYPE
  -- FROM	SNMPv2-SMI, RFC1155-SMI, SNMPv2-SMI-v1
::= { iso(1) org(3) dod(6) 1 }
$

..but as I don't have standard bodies MIBs installed, the output is:

$ snmptranslate -IR -On -Td internet 2>/dev/null
$

In other words, snmptranslate is not able to find the OID for
"internet" object. I know that I can copy the SNMPv2-SMI MIB file from
another box to the one with the fresh snmp installation or download
the SNMPv2-SMI MIB file from for example
http://tools.cisco.com/Support/SNMP/do/BrowseMIB.do?local=en&step=2&mibName=SNMPv2-SMI
, but I was simply bit surprised that it is not shipped with
"libsnmp-base" package and I also could not find it from
http://www.net-snmp.org/docs/mibs/


regards,
Martin

On 7/9/15, Jurkiewicz Jean-Marc <Jean-Marc.Jurkiewicz@manor.ch> wrote:
> Hi Martin,
>
> May I kindly ask you to read the RFC1155 and 1156... you will find a lot of
> information and most of the answers to your questions...
> Readings about ASN.1
>
> A good starting point for you - as far as I can estimate your know-how about
> SNMP - concurrently to reading at least these RFCs, will be to implement
> Getif, a free MIB browser on your PC and play a bit with it.
>
> .iso.org.dod  (.1.3.6) is a path, not MIBS. Please do not confuse OIDs and
> MIBs : RFC 1155 says that
>
>
> "...   An OBJECT IDENTIFIER is a sequence of integers which traverse a
>    global tree.  The tree consists of a root connected to a number of
>    labeled nodes via edges.  Each node may, in turn, have children of
>    its own which are labeled.  In this case, we may term the node a
>    subtree.  This process may continue to an arbitrary level of depth.
>    Central to the notion of the OBJECT IDENTIFIER is the understanding
>    that administrative control of the meanings assigned to the nodes may
>    be delegated as one traverses the tree.  A label is a pairing of a
>    brief textual description and an integer.
>
>    The root node itself is unlabeled, but has at least three children
>    directly under it:  one node is administered by the International
>    Organization for Standardization, with label iso(1); another is
>    administrated by the International Telegraph and Telephone
>    Consultative Committee, with label ccitt(0); and the third is jointly
>    administered by the ISO and the CCITT, joint-iso-ccitt(2).
>
>    Under the iso(1) node, the ISO has designated one subtree for use by
>    other (inter)national organizations, org(3).  Of the children nodes
>    present, two have been assigned to the U.S. National Institutes of
>    Standards and Technology.  One of these subtrees has been transferred
>    by the NIST to the U.S. Department of Defense, dod(6).
>
>    As of this writing, the DoD has not indicated how it will manage its
>    subtree of OBJECT IDENTIFIERs.  This memo assumes that DoD will
>    allocate a node to the Internet community, to be administered by the
>    Internet Activities Board (IAB) as follows:
>
>       internet    OBJECT IDENTIFIER ::= { iso org(3) dod(6) 1 }
>
>    That is, the Internet subtree of OBJECT IDENTIFIERs starts with the
>    prefix:
>
>       1.3.6.1
>
> "
>
> Best regards
> JMJ
>
>
> -----Message d'origine-----
> De : Martin T [mailto:m4rtntns@gmail.com]
> Envoyé : jeudi, 9. juillet 2015 15:51
> À : net-snmp-users@lists.sourceforge.net
> Objet : Where to find SNMP MIB files close to root?
>
> Hi,
>
> I installed "snmp" package under Debian which contains all the familiar
> utilities like snmpwalk, snmpget, snmpset, snmptranslate, etc. This "snmp"
> package depends on "libsnmp15" package which depends on "libsnmp-base"
> package which installs bunch of MIB files:
>
> $ dpkg -L libsnmp-base | grep '/usr/share/mibs/netsnmp/'
> /usr/share/mibs/netsnmp/NET-SNMP-EXAMPLES-MIB
> /usr/share/mibs/netsnmp/NET-SNMP-AGENT-MIB
> /usr/share/mibs/netsnmp/UCD-IPFWACC-MIB
> /usr/share/mibs/netsnmp/UCD-DISKIO-MIB
> /usr/share/mibs/netsnmp/NET-SNMP-VACM-MIB
> /usr/share/mibs/netsnmp/UCD-DLMOD-MIB
> /usr/share/mibs/netsnmp/NET-SNMP-SYSTEM-MIB
> /usr/share/mibs/netsnmp/UCD-SNMP-MIB
> /usr/share/mibs/netsnmp/LM-SENSORS-MIB
> /usr/share/mibs/netsnmp/NET-SNMP-PASS-MIB
> /usr/share/mibs/netsnmp/NET-SNMP-MIB
> /usr/share/mibs/netsnmp/NET-SNMP-TC
> /usr/share/mibs/netsnmp/NET-SNMP-MONITOR-MIB
> /usr/share/mibs/netsnmp/NET-SNMP-EXTEND-MIB
> /usr/share/mibs/netsnmp/GNOME-SMI
> /usr/share/mibs/netsnmp/UCD-DEMO-MIB
> $
>
>
> However, looks like standard bodies(iso, ccitt) MIB files were not
> installed:
>
> $ grep -i iso $(dpkg -L libsnmp-base | grep '/usr/share/mibs/netsnmp/')
> /usr/share/mibs/netsnmp/UCD-SNMP-MIB:-- returned to:
> .iso.org.dod.internet.mgmt.mib-2.system.sysObjectID.0
> /usr/share/mibs/netsnmp/NET-SNMP-TC:--
> .iso.org.dod.internet.experimental.nmrg.nmrgSnmpDomains.snmpTCPDomain
> $ snmptranslate -IR -On -Td internet 2>/dev/null $
>
> Where should one generally find those MIB files? Or do distributions usually
> provide a package which contains all the popular MIB files and also those
> MIB files which are close to root(for example SNMPv2-SMI.txt)?
>
>
> thanks,
> Martin
>
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