Network Management Computer Networks 1 OSI Network Management

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Network Management Computer Networks 1

Network Management Computer Networks 1

OSI Network Management Model Performance Management e. g. utilization Fault Management e. g. SNMP

OSI Network Management Model Performance Management e. g. utilization Fault Management e. g. SNMP traps Configuration Management e. g. configuration files Accounting Management e. g. chargeback systems Security Management e. g. access control 2

Components of a Network Management System Manager centralized collects, controls, and reports Managed entities

Components of a Network Management System Manager centralized collects, controls, and reports Managed entities agent software management information base (MIB) Network management protocol 3

Simple Network Management Protocol Most popular version is SNMPv 1 SNMPv 2 exists, but

Simple Network Management Protocol Most popular version is SNMPv 1 SNMPv 2 exists, but no one uses it SNMPv 3 enhances admin and security SNMPv 1 defined in RFC 1157 Two popular books The Simple Book - M. Rose SNMP, SNMPv 2, SNMPv 3 and RMON 1 and 2 - W. Stallings 4

Structure of Management Information (SMI) Based on ASN. 1 Defines information in managed entity

Structure of Management Information (SMI) Based on ASN. 1 Defines information in managed entity Integer 32, Unsigned 32 IPaddress Counter 32, Counter 64 High level constructs 5

SMI Example ip. In. Delivers Object. Type SYNTAX Counter 32 MAX-ACCESS read-only STATUS current

SMI Example ip. In. Delivers Object. Type SYNTAX Counter 32 MAX-ACCESS read-only STATUS current DESCRIPTION "The total number of input datagrams successfully delivered to IP user-protocols (including ICMP). � : : = ( ip 9 ) 6

Management Information Base (MIB) Stores information of managed entity Values can be queried and

Management Information Base (MIB) Stores information of managed entity Values can be queried and often set using the network management protocol (SNMP) Many standard MIBs and many more private MIBs Objects arranged in MIB according to its Object ID (OID) 7

MIB Naming Format Uses ISO format Example Cisco� s MIB: 1. 3. 6. 1.

MIB Naming Format Uses ISO format Example Cisco� s MIB: 1. 3. 6. 1. 4. 1. 9 A Cisco MIB object: 1. 3. 6. 1. 4. 1. 9. 9. 13. 1. 3 device temperature 8

SNMP Protocol Operation Get. Request Get. Next. Request Set. Request Get. Response Trap SNMPv

SNMP Protocol Operation Get. Request Get. Next. Request Set. Request Get. Response Trap SNMPv 2 adds functionality e. g. Get. Bulk. Request 9

SNMP Message Format 10

SNMP Message Format 10

Remote Network Monitoring (RMON) RMON is a MIB for remote management of a network

Remote Network Monitoring (RMON) RMON is a MIB for remote management of a network as opposed to a single managed entity Probes collect and process information Standard RMON groups statistics, history, alarm, host. Top. N, matrix, filter, packet capture, event 11

John� s Theory on Network Management If you spend more time managing your network

John� s Theory on Network Management If you spend more time managing your network management system(s) than your actual production network, you� re doing something very wrong. 12

OSI modelis Kas yra OSI OSI Open StandartsOSI modelis Kas yra OSI OSI Open Standarts
OSI Model OSI MODEL OSI Model Communication ArchitectureOSI Model OSI MODEL OSI Model Communication Architecture
OSI TCPIP 1 OSI 2 OSI 3 TCPIPOSI TCPIP 1 OSI 2 OSI 3 TCPIP
OSI Model OSI Reference Model OSI Model TheOSI Model OSI Reference Model OSI Model The
OSI LAYERS ccna OSI Model OSI means OpenOSI LAYERS ccna OSI Model OSI means Open
Computer Networks OSI Reference Model Unit II OSIComputer Networks OSI Reference Model Unit II OSI
NM architectures RMON OSI Network Management Architecture OSINM architectures RMON OSI Network Management Architecture OSI
Computer Networking Concepts OSI Model Introduction OSI OpenComputer Networking Concepts OSI Model Introduction OSI Open
OSI LOGO v OSI NETWORK PROGRAMMING 3 preparedOSI LOGO v OSI NETWORK PROGRAMMING 3 prepared
Network Layers OSI TCPIP OSI ISO 7 APPLICATIONNetwork Layers OSI TCPIP OSI ISO 7 APPLICATION
Network Layers OSI TCPIP OSI ISO 7 4Network Layers OSI TCPIP OSI ISO 7 4