Network Management - PowerPoint PPT Presentation

1 / 12
About This Presentation
Title:

Network Management

Description:

The Simple Book - M. Rose. SNMP, SNMPv2, SNMPv3 and RMON 1 and 2 - W. ... RMON is a MIB for remote management of a network as opposed to a single managed entity ... – PowerPoint PPT presentation

Number of Views:76
Avg rating:3.0/5.0
Slides: 13
Provided by: johnkr4
Category:

less

Transcript and Presenter's Notes

Title: Network Management


1
Network Management
  • Computer Networks

2
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

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

4
Simple Network Management Protocol
  • Most popular version is SNMPv1
  • SNMPv2 exists, but no one uses it
  • SNMPv3 enhances admin and security
  • SNMPv1 defined in RFC 1157
  • Two popular books
  • The Simple Book - M. Rose
  • SNMP, SNMPv2, SNMPv3 and RMON 1 and 2 - W.
    Stallings

5
Structure of Management Information (SMI)
  • Based on ASN.1
  • Defines information in managed entity
  • Integer32, Unsigned32
  • IPaddress
  • Counter32, Counter64
  • High level constructs

6
SMI Example
  • ipInDelivers ObjectType
  • SYNTAX Counter32
  • MAX-ACCESS read-only
  • STATUS current
  • DESCRIPTION
  • The total number of input datagrams successfully
    delivered to IP user-protocols (including ICMP).
  • ( ip 9 )

7
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)

8
MIB Naming Format
  • Uses ISO format
  • Example
  • Ciscos MIB
  • 1.3.6.1.4.1.9
  • A Cisco MIB object
  • 1.3.6.1.4.1.9.9.13.1.3.1.3
  • device temperature

9
SNMP Protocol Operation
  • GetRequest
  • GetNextRequest
  • SetRequest
  • GetResponse
  • Trap
  • SNMPv2 adds functionality
  • e.g. GetBulkRequest

10
SNMP Message Format
11
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, hostTopN,
    matrix, filter, packet capture, event

12
Johns Theory on Network Management
  • If you spend more time managing your network
    management system(s) than your actual production
    network, youre doing something very wrong.
Write a Comment
User Comments (0)
About PowerShow.com