Network Management Presentation

HP Openview

Christopher Scott

December 10, 2004

OpenView Network Node Manager

(NNM)

OpenViewNetwork Node Manager

• Overview

• How it works

• Capabilities

• Technical and business benefits

• Summary

• Network management tool

• Proactive network management

• Provides a solid solution for managing dynamic IP networks

• NNM is starting point for implementing a network management solution

Overview

Network Node Manager

What does it do?

• Dynamically maps out your network

• Collects critical information about you network

• Correlates the information it collect

• Maintains a relational database

• Provides report generation

How does it work?

• NNM uses several protocols to maintain communication with each managed device– SNMPv1, SNMPv2– TCP/IP, IPX– UDP– ICMP– ARP/RARP

SNMP Network Mgmt Model

• Manager– A manager is an application that executes network management

operations

– The manager monitors and controls agent systems

• SNMP agent– Resides on a managed node

– An application that acts on behalf of an object

• Object– Anything that will be managed

• Host, router, hub, application, database

Manager-Agent Communication through SNMP

Manager Agent MIB

SNMP Request withCommunity Name

Retrieve (get) management information

Alter (set) management information

SNMP Replies

SNMP Traps

Automatic Discovery and Layout

• All IP and Level 2 devices on the network are automatically discovered and mapped

• IPX devices are also discovered

• Map is a logical representation of your network

• Automatic discovery may take several hours or even overnight

Example of network discovery and layout

Network Discovery (cont’d)• NNM discovers the following objects and put

them on the default map– Internet-level submap

• IP networks, gateways, routers and multihomed workstations

– Network-level submaps• Bus, star and ring segments

– Segment-level submaps• Hosts, gateways, routers, switches, hubs, and bridges

– Node-level submaps• Network interface cards

Typical Submap Hierarchy

Distributed Internet Discovery and Monitoring (DIDM)

• Large networks may require this distributed model

• Spreads discovery, monitoring, and polling across several Network Node Managers acting as collection stations

• Collection stations monitor some portion of the network and inform the management station of changes

DIDM (cont’d)• NNM

– can serve as a management station, a collection station, or both

• Management stations– Role is to make the network management

functionality available to the users

• Collection stations– Role is to be a collection point in the overall

network management system

Simplified Distribution Model for NNM

Management Consoles

• NNM gives the ability to have 15 to 25 operators simultaneously monitoring the network

• Operators can share one map , or have individual maps– Individual maps create area of responsibility on

the network for each operator– More efficient in large networks

Multiple Management Consoles

Sample map views

Sample map views

Sample map views

Challenges to IT Service Management• User dissatisfaction / increased user

expectations• Deploying network services, while

maintaining productivity• Keeping networks and systems operational

24/7/365• Producing faster, more predictable response

times• Integrating and managing complex systems

in a multi-vendor environment

Technical benefits• Network Management can help achieve

those goals by:

• Fault and Problem Management– Reduced downtime of network systems and

devices– Quick detection and correction of network

problems

• Performance Management– Ability to monitor data to anticipate problems– Log information for historical analysis

Business Benefits

• Network Management can help achieve those goals through:

• Accounting Management– Obtains statistical information on network use – Track individual resource utilization

• Security Management– Protects the network and its systems from

unauthorized access, use, and harm

Summary

• hp OpenView NNM is a robust network management platform that can provide a graphical look into your network and provide many benefits like Fault and Problem management, Performance management, etc

• Makes network management proactive instead of reactive

• NNM uses SNMP to discover devices on the network and automatically manage and monitor them

• NNM can play an integral role in achieving both the technical and business goals of an organization