Ch23
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The document discusses Simple Network Management Protocol (SNMP). It describes SNMP's components including the Structure of Management Information (SMI) which defines naming rules and encoding of objects, and Management Information Bases (MIB) which define collections of objects and their relationships. It also discusses SNMP messages for reading and changing object values in SNMP packets, using UDP port 161 for communication.
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This document discusses the Simple Network Management Protocol (SNMP) which provides a framework for managing devices using TCP/IP. It describes the key components of SNMP including:
- The Structure of Management Information (SMI) which defines naming and encoding rules for managed objects.
- The Management Information Base (MIB) which defines a collection of managed objects for an entity.
- SNMP which defines the format of packets exchanged between a manager and agent to read and change status values of objects in MIBs.
The document provides examples of how objects are defined and encoded within SNMP packets.
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The document discusses the Simple Network Management Protocol (SNMP) which provides a framework for managing devices on an internet using TCP/IP. It defines three key components:
1) The Structure of Management Information (SMI) which defines rules for naming and encoding managed objects.
2) The Management Information Base (MIB) which defines a collection of named objects and their attributes to be managed.
3) SNMP which defines the format of packets exchanged between a manager and agent to read and modify the status of objects in MIBs.
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The document discusses the Simple Network Management Protocol (SNMP) which provides a framework for managing devices on an internet using TCP/IP. It defines three key components:
1) The Structure of Management Information (SMI) which defines rules for naming and encoding managed objects.
2) The Management Information Base (MIB) which defines a collection of named objects and their attributes to be managed.
3) SNMP which defines the format of packets exchanged between a manager and agent to read and modify the status of objects in MIBs.
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The document discusses the Simple Network Management Protocol (SNMP) which provides a framework for managing devices on an internet using TCP/IP. It defines three key components:
1) The Structure of Management Information (SMI) which defines rules for naming and encoding managed objects.
2) The Management Information Base (MIB) which defines a collection of named objects and their attributes to be managed.
3) SNMP which defines the format of packets exchanged between a manager and agent to read and modify the status of objects in MIBs.
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- The Structure of Management Information (SMI) which defines naming and encoding rules for managed objects.
- The Management Information Base (MIB) which defines a collection of managed objects for an entity.
- SNMP which defines the format of packets exchanged between a manager and agent to read and change status values of objects in MIBs.
The document provides examples of how objects are defined and encoded within SNMP packets.
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The document discusses the Simple Network Management Protocol (SNMP) which provides a framework for managing devices on an internet using TCP/IP. It defines three key components:
1) The Structure of Management Information (SMI) which defines rules for naming and encoding managed objects.
2) The Management Information Base (MIB) which defines a collection of named objects and their attributes to be managed.
3) SNMP which defines the format of packets exchanged between a manager and agent to read and modify the status of objects in MIBs.
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The document discusses the Simple Network Management Protocol (SNMP) which provides a framework for managing devices on an internet using TCP/IP. It defines three key components:
1) The Structure of Management Information (SMI) which defines rules for naming and encoding managed objects.
2) The Management Information Base (MIB) which defines a collection of named objects and their attributes to be managed.
3) SNMP which defines the format of packets exchanged between a manager and agent to read and modify the status of objects in MIBs.
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The document discusses the Simple Network Management Protocol (SNMP) which provides a framework for managing devices on an internet using TCP/IP. It defines three key components:
1) The Structure of Management Information (SMI) which defines rules for naming and encoding managed objects.
2) The Management Information Base (MIB) which defines a collection of named objects and their attributes to be managed.
3) SNMP which defines the format of packets exchanged between a manager and agent to read and modify the status of objects in MIBs.
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The SNMP Version 1 RFC is:
RFC 1157. Simple Network Management Protocol
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Indus Complex at Raja Ramanna Centre for Advanced Technology (RRCAT) has two synchrotron
radiation sources, Indus-1 and Indus-2. Microtron is injector to both the machines which sends electron pulses
to the Booster. A new, microcontroller based, distributed mains monitoring and switching system is developed
for Indus complex. It facilitates remote monitoring and switching of AC power switches to various subsystems. It
includes interfacing with power switches/Miniature Circuit Breakers (MCBs) of Indus machine subsystems. This
work involves development of hardware, firmware for microcontroller, implementation of communication
protocol; LabVIEW based server and client application. The developed system allows remote monitoring and
switching of MCBs from main control room.
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- TCP/IP is also a layered protocol suite with 5 layers that don't exactly match the OSI layers but can be mapped to physical, data link, network, transport and application layers.
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Chap 21 snmp
This document provides an overview of SNMP (Simple Network Management Protocol) and its components SMI (Structure of Management Information) and MIB (Management Information Base). It discusses the roles of SNMP managers and agents, how SMI defines object naming and encoding, how MIBs define the objects that can be managed on an agent, and how SNMP is used to get, set, and trap values of these objects.
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This document discusses SNMP (Simple Network Management Protocol), a standard protocol for managing devices on a network. It describes how SNMP uses managers and agents to communicate information about device performance, configuration, faults, and security. The key SNMP operations are get, get-next, set, trap, and bulk operations, which allow retrieving or setting values of managed objects on devices from a central manager.
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SMIv1 RFCs also apply to all SNMPv1 entities. MIB-II RFCs also apply to all SNMPv1 agent entities.
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This document is a project report on implementing a centralized monitoring station for an IT network infrastructure. It will collect SNMP traps from all network devices and pass them to backend processing boxes for load distribution. The report discusses SNMP concepts like OIDs, MIBs, and community strings. It also describes the three versions of SNMP and provides instructions for installing SNMP utilities and using commands like snmpget and snmpwalk to perform queries.
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SNMP Project: SNMP-based Network Anomaly Detection Using Clustering
This document contains implementation report of a system that is able to monitor the network using SNMP and identify the specific possible attacks (DoS and port scan) using a cluster analysis. In the first task, the program discovers the topology of the network. After successful discovery phase, it will be able to monitor the link utilization (network link-states) for a specified period of time, and then detect the anomaly, using k-means clustering scheme [1]. These anomalies will be analyzed to recognize the attack. Moreover, this program also provides an advance feature, which is defined as optional task, as it executes online monitoring and detects the attacks using Davies-Bouldin Index as quality scoring measurement [2].
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Please contact trough lailiaidi at gmail.com for download request
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Indus Complex at Raja Ramanna Centre for Advanced Technology (RRCAT) has two synchrotron
radiation sources, Indus-1 and Indus-2. Microtron is injector to both the machines which sends electron pulses
to the Booster. A new, microcontroller based, distributed mains monitoring and switching system is developed
for Indus complex. It facilitates remote monitoring and switching of AC power switches to various subsystems. It
includes interfacing with power switches/Miniature Circuit Breakers (MCBs) of Indus machine subsystems. This
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- The OSI model defines 7 layers of network functionality from physical transmission of bits to high-level applications. Each layer provides services to the layer above it.
- TCP/IP is also a layered protocol suite with 5 layers that don't exactly match the OSI layers but can be mapped to physical, data link, network, transport and application layers.
- Layered models improve modularity and allow different aspects of networking to evolve independently. They also allow interoperability between heterogeneous networks.
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- Descriptions of key SNMP components like managed devices, agents, and network management systems
- Explanations of SNMP versions 1, 2, and 3 and their differences in features like security
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- Details on SNMP operations, message types, and use of UDP ports
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The document discusses the functions of a network management system including configuration management, fault management, performance management, security management, and accounting management. It then describes the key components of SNMP including the SNMP protocol, SMI framework for naming and defining object types, and MIB which defines a collection of named objects and their relationships. The document provides details on how SNMP messages are structured and encoded using BER, and how SNMP utilizes UDP ports 161 and 162 for request/response and trap messages.
call for papers, research paper publishing, where to publish research paper, ...
call for papers, research paper publishing, where to publish research paper, ...International Journal of Engineering Inventions www.ijeijournal.com
This document summarizes a research paper that proposes a new decentralized and dynamic approach for securing multicast communications. The approach uses a hierarchical key graph based on the Chinese Remainder Theorem to efficiently manage group keys. When members join or leave, only the keys along the member's path need updating. The key server pre-calculates common parameters to reduce re-keying costs. The approach aims to minimize computation, bandwidth usage, encryption, and other costs compared to existing centralized group key management protocols.unit5NtwManagement.ppt
Network management involves monitoring, controlling, and configuring the devices and resources in a network. It uses a standardized framework including managed devices, management agents, a management information base (MIB), and a network management protocol. [SNMP] is commonly used as the network management protocol. It defines operations and message formats to retrieve and modify MIB objects, representing managed resources, and to send unsolicited trap notifications from agents to the managing station. Network management provides critical functions for network operation and troubleshooting.
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The document discusses PeerSim, an open source simulation engine for peer-to-peer networks. PeerSim allows modeling of network protocols with up to 1 million nodes and has two simulation modes: event-driven and cycle-driven. The document then describes using PeerSim to create protocols for finding the minimum and maximum values in a network, including implementing MaxFunction and MinFunction classes, observer classes, and configuration files to test the protocols.
Managing enterprise networks with cisco prime infrastructure_ 1 of 2
Network Management is define as monitoring, testing, configuring, and troubleshooting network components to meet a set of requirements defined by an organization.
The requirements include the smooth, efficient operation of the network that provides the predefined quality of service for users.
To accomplish this task, a network management system uses hardware, software, and humans.
Similar to Ch23 (20)
FALLSEM2023-24_BCSE308L_TH_VL2023240100841_2023-07-10_Reference-Material-II.ppt
FALLSEM2023-24_BCSE308L_TH_VL2023240100841_2023-07-10_Reference-Material-II.ppt
Centralized monitoring station for it computing and network infrastructure1
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SNMP Project: SNMP-based Network Anomaly Detection Using Clustering
SNMP Project: SNMP-based Network Anomaly Detection Using Clustering
Development of Distributed Mains Monitoring and Switching System for Indus Co...
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call for papers, research paper publishing, where to publish research paper, ...
call for papers, research paper publishing, where to publish research paper, ...
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Ch16
This document provides an overview of socket programming concepts including:
1) Definitions of sockets, byte ordering, address transformation, and functions for getting information about remote hosts.
2) Socket system calls for creating and managing sockets including connect, bind, listen, accept, send, receive and close.
3) Examples of connectionless and connection-oriented client-server programs using UDP and TCP including iterative and concurrent server models.
Ch15
This document discusses the client-server model and how it relates to concurrency and processes in computer networks. It begins by comparing the OSI and TCP/IP models, then defines the client-server model and shows examples of the client-server relationship. It next covers concurrency, describing different types of servers like connectionless iterative and connection-oriented concurrent servers. Finally, it discusses processes, showing how programs and processes relate, examples of getting process IDs, and how forking allows a program to create parent and child processes like in a server program.
Ch14
This document discusses multicast routing protocols. It introduces concepts like multicast trees, reverse path forwarding, and describes several multicast routing protocols including DVMRP, MOSPF, CBT, PIM, and MBONE. DVMRP uses reverse path forwarding and pruning/grafting to efficiently route multicast traffic to multiple receivers. PIM comes in two variants - PIM-DM for dense networks and PIM-SM for sparser wide area networks. MBONE enables multicast routing over the Internet using logical tunneling between multicast routers.
Ch13
This document summarizes several routing protocols:
- RIP (Routing Information Protocol), an interior gateway protocol that shares routing tables periodically and uses hop counts to determine best paths. It has issues with slow convergence and instability.
- OSPF (Open Shortest Path First), an IGP that uses link state routing to calculate shortest paths. Routers flood link state advertisements to maintain synchronized topological databases.
- BGP (Border Gateway Protocol), an exterior gateway protocol used between autonomous systems to exchange routing and reachability information. It uses path vector routing rather than link states.
Ch12
The document provides an overview of the Transmission Control Protocol (TCP). It discusses TCP services like reliable in-order byte stream delivery and flow control using sliding windows. It also covers TCP features like error control using sequence numbers and acknowledgments, congestion control using timers and window sizing, segment formatting and options, checksum calculation, connection establishment and termination, and the TCP state machine.
Ch11
The document discusses the User Datagram Protocol (UDP) which provides a simple transport layer allowing processes to send messages called datagrams to other processes. UDP operates above IP and below transport protocols like TCP. It uses port numbers and IP addresses to deliver datagrams to the correct processes. UDP includes a checksum to detect errors but does not establish connections or guarantee delivery like TCP. The document provides examples of how UDP uses a control block table and queue numbers to deliver incoming datagrams to the proper processes.
Ch10
IGMP is a group management protocol that helps multicast routers create and update lists of members for each router interface. It uses query and report messages to manage multicast group membership. The IP protocol field value for an IGMP packet is 2. IGMP packets are encapsulated in IP packets and use class D mapping to Ethernet addresses for delivery within local networks.
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Ch23
- 1. Chapter 23 Simple Network Management Protocol (SNMP)
- 3. CONCEPT 23.1
- 4. Figure 23-1 Concept
- 6. Figure 23-2 Components of network management on the Internet
- 7. SNMP defines the format of packets exchanged between a manager and an agent. It reads and changes the status (values) of objects (variables) in SNMP packets.
- 8. SMI defines the general rules for naming objects, defining object types (including range and length), and showing how to encode objects and values.
- 9. SMI defines neither the number of objects an entity should manage, nor names the objects to be managed nor defines the association between the objects and their values.
- 10. MIB creates a collection of named objects, their types, and their relationships to each other in an entity to be managed.
- 11. We can compare the task of network management to the task of writing a program. 1. Both tasks need rules. In network management this is handled by SMI. 2. Both tasks need variable declarations. In network management this is handled by MIB. 3. Both tasks have actions performed by statements.In network management this is handled by SNMP.
- 12. SMI 23.3
- 13. Figure 23-3 Object attributes
- 14. Figure 23-4 Object identifier
- 15. All objects managed by SNMP are given an object identifier. The object identifier always starts with 1.3.6.1.2.1.
- 16. Figure 23-5 Data types
- 17. Figure 23-6 Conceptual data types
- 18. Figure 23-7 Encoding format
- 19. Figure 23-8 Length format
- 20. Figure 23-9 Example 1: INTEGER 14
- 21. Figure 23-10 Example 2: OCTET STRING “HI”
- 22. Figure 23-11 Example 3: ObjectIdentifier 1.3.6.1
- 23. Figure 23-12 Example 4: IPAddress 131.21.14.8
- 24. MIB 23.4
- 25. Figure 23-13 mib-2
- 26. Figure 23-14 udp group
- 27. Figure 23-15 udp variables and tables
- 28. Figure 23-16 Indexes for udpTable
- 29. Figure 23-17 Lexicographic ordering
- 30. SNMP 23.5
- 31. Figure 23-18 SNMP PDUs
- 32. Figure 23-19 SNMP PDU format
- 33. MESSAGES 23.6
- 34. Figure 23-20 SNMP message
- 35. Figure 23-21 GetRequest message
- 36. UDP PORTS 23.7
- 37. Figure 23-22 Port numbers for SNMP
- 38. 23.8 SECURITY