Many people have helped these pages, and the presentation happen. A special thanks to UUASC and Hershel Remer for the original opportunity to present on this topic, and also to the people in Phoenix, AZ, for the original work.



 
 
















































































































































































































































SNMP

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Famous SNMP Tools

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Related Purpose But Not SNMP

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Client/Server Model

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Versions of SNMP

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Key Concepts

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SNMP Message Format

--------------------------------------------------------------
| Version | Community Name | SNMP Protocol Data Unit  ...    |
| (Int.)  | (Octet Str.)   | (Sequence)                      |
--------------------------------------------------------------

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PDU - Protocol Data Unit

--------------------------------------------------------------
| PDU  | Request | ... | ... |  Variable  ...                |
| Type |   ID    | ... | ... |    Bindings ....              |
--------------------------------------------------------------

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ASN.1 Abstract Syntax Notation 1

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MIB - Management Information Base

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Typical Entry From RFC-1213

          ifAdminStatus OBJECT-TYPE
              SYNTAX  INTEGER {
                          up(1),       -- ready to pass packets
                          down(2),
                          testing(3)   -- in some test mode
                      }
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "The desired state of the interface.  The
                      testing(3) state indicates that no operational
                      packets can be passed."
              ::= { ifEntry 7 }

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Typical Table Entry From RFC-1213


          ifEntry OBJECT-TYPE
              SYNTAX  IfEntry
              ACCESS  not-accessible
              STATUS  mandatory
              DESCRIPTION
                      "An interface entry containing objects at the
                      subnetwork layer and below for a particular
                      interface."
              INDEX   { ifIndex }
              ::= { ifTable 1 }

          IfEntry ::=
              SEQUENCE {
                  ifIndex
                      INTEGER,
                  ifDescr
                      DisplayString,
                  ifType
                      INTEGER,
                  ifMtu
                      INTEGER,
                  ifSpeed
                      Gauge,
                  ifPhysAddress
                      PhysAddress,
                  ifAdminStatus
                      INTEGER,
                  ifOperStatus
                      INTEGER,
                  ifLastChange
                      TimeTicks,
                  ifInOctets
                      Counter,
                  ifInUcastPkts
                      Counter,
                  ifInNUcastPkts
                      Counter,
                  ifInDiscards
                      Counter,
                  ifInErrors
                      Counter,
                  ifInUnknownProtos
                      Counter,
                  ifOutOctets
                      Counter,
                  ifOutUcastPkts
                      Counter,
                  ifOutNUcastPkts
                      Counter,
                  ifOutDiscards
                      Counter,
                  ifOutErrors
                      Counter,
                  ifOutQLen
                      Gauge,
                  ifSpecific
                      OBJECT IDENTIFIER
              }

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OIDs

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                          |
       --------------------------------------
       |                  |                 |
      CCITT (0)          ISO (1)    Joint-ISO-CCITT (2)
                          |
                         org (3)
                          |
                         DOD (6)
                          |
                        Internet (1)
                          |
       --------------------------------------------------
       |            |           |                 |
  directory (1)   mgmt (2)  experimental (3)   private (4)
                    |                             |
                    |                           enterprises (1)
                    |                             |
                   MIB-2 (1)                     CISCO, Nortel, etc.
                    |
  ----------------------------------------------------
  |             |            |           |          |
system (1)  interface (2)   at (3)      ip (4)   icmp (5)

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Therefore, you frequently will see:

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Some Clarifying Comments;

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Community Strings

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Traps

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How to Cheat at SNMP

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Books

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                       UNIX NETWORK MANAGEMENT TOOLS.
                             By Steve Maxwell.

   A reference guide that covers the most common flavors of UNIX systems
    and all the important protocols. Includes a CD-ROM with customizable
   tools, utilities, demo programs. 349 pages. Published by McGraw-Hill.

          Paperbound 7 Remainder 7 ISBN 0079137822 7 Item #1236490
                Published at $39.99   o   Your Price $14.95

                http://www.hamiltonbook.com

  I haven't read it yet, but an apparent major revision/update
  'Red Hat Linux Network Management Tools', ISBN 0072122625
  has received bang-up reviews at Amazon.com

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                                 Essential SNMP
                       By Douglas Mauro and Kevin Schmidt

                               The O'Reilly book.
                 Don't confuse it with their SNMP for NT book.

                Paperbound ISBN 0-596-00020-0 Item #1236490
                       $39.95 US $59.95 CA #28.50 UK

                    http://www.oreilly.com/catalog/esnmp/

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Understanding SNMP MIBs,


            David Perkins & Evan McGinnis
            (C) 1997,  ISBN  0-13-437708-7,  Prentice-Hall,
            509 pages,

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ASN.1 Complete


            John Larmouth
            (C) 2000, ISBN 0-12-233435-3, Morgan-Kaufmann
            472 pages

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In My Opinion, the Most Important Web Sites

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USENET, etc.

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Some other sites of possible interest.

(End of main presentation)

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SNMPv2 Crucial Documents

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