Computer Network and Administration: Structure of Management Info
Computer system Network & Management
Title: Structure of Supervision Information (SMI)
Structure of Management Information (SMI):
In the framework of network management, for the Composition of Managing Information (SMI):
a)Name it is three hierarchical layers.
The Structure of Management Information (SMI) common is responsible for understanding the rules for how the Managing Information Base (MIB) objects are organized, described and arranged. SMI can be described as data definition language permits dissimilar products to speak by ensuring that they can use a general data portrayal for all administration information. SMI is needed to make sure the format and semantics of the network management info are well identified and unambiguous.[TCP/IP Guide]
Three hierarchical tiers of the Composition of Management Information will be the base info types, object-type and module-identity.
b)Explain the function of each layer.
The bottom Data Type layer is use in the SYNTAX term of the OBJECT-TYPE macro that needs to be present. This defines this data framework corresponding to the object. It provides the following 11 basic info types: INTEGER, Integer32, Unsigned32, OCTET STRING, OBJECT IDENTIFIER, IPaddress, Counter32, Counter64, Gauge32, TimeTicks, and Opaque. Any restriction in size, selection or enumerations specified from this SYNTAX clause represents the maximal degree of support that makes " process sense".[RFC2578]
The OBJECT-TYPE coating is value to specify your data type, status, and the semantics of handled objects. It has basic of five mandatory characteristics namely, OBJECT-NAME, SYNTAX, MAX ACCESS, STATUS, and INFORMATION, optionally with OPTIONAL-CHARACTERISTICS. The OBJECT-NAME is actually. The FORMAT clause identifies the basic info type of the thing. The MAX-ACCESS clause identifies the managed object both can be read-create, read-write, read-only, accessible for notify just, or not really accessible. The STATUS terms specifies the item is current, obsolete or deprecated. The DESCRIPTION terms contains a textual definition of the object. [RFC2578][RFC2013]
The MODULE-IDENTITY level is used expressing concisely the semantics associated with an information component. It organizations related target into a Management Information Foundation (MIB) component. Each MODULE-IDENTITY contains numerous clauses just like the LAST-UPDATED offer, ORGANIZATION term, CONTACT-INFO clause, DESCRIPTION clause and VERSION clause. Theses clauses document the particular date of last updated, the business and contact information of the author of the module, and a textual information of the module, and the version information including the date of revision plus the revision description.[RFC2012][TCP-IP Guide]
c)For each layer, provide four examples of defined choices.
Four types of Base Data Types
1 . Integer/Integer32 [RFC2578]
Integer/Integer32 is actually a 32-bit agreed upon integer in twoВЎВ¦s match notation, competent of keeping a value among ВЎV2, 147, 483, 648 and +2, 147, 483, 647. installment payments on your Network Address/IpAddress [RFC2578]
Costly IP address, encoded as a 4-byte octet line.
3. TimeTicks [RFC2578]
Period Ticks is a 32-bit unsigned integer that indicates the quantity of hundredths of seconds since some irrelavent start date. Used for period stamping and to compute past time. some. Counter64 [RFC2578]
Counter64 is known as a counter of 64 pieces wide, enabling a value between 0 to 18, 446, 744, 073, 709, 551, 615.
Four samples of Object Type
1)Total range of input datagrams successfully sent ipInDelivers OBJECT-TYPE
" The total number of input datagrams successfully shipped to IP user-protocols (including ICMP). "
:: = ip 9
2)TCP Most of cable connections
SYNTAX Integer32 (-1 | 0.. 2147483647)
Bibliography: James F Kurose & Keith Watts Ross, Computer Networking ВЎV A Top Down Procedure Featuring the Internet, (2nd Edition), Addision-Wesley, ISBN: 0 321 17644-8 (the International Edition), ISBN 0-201-97699-4.
Michael L. Palmer & Robert Generic Sinclair, Advanced Networking Ideas, Course Technology, ISBN 0-7895-0195-3
Houston L. Carr & Charles A. Snyder, The Management of Telecommunications- Organization Solutions to Business Problems, The McGraw-Hill Corporations, ISBN 0-256-21961-3
William Stallings & Richard Van Slyke, Business Info Communications, (Third Edition), Prentice Hall, ISBN 0-13-594581-X