Network Management Presentation
HP Openview
OpenView
Network Node Manager (NNM)
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Overview
How it works
Capabilities
Technical and business benefits
Summary
Network Node Manager
Overview
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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
What does it do?
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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
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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
SNMP Request with
Community Name
Manager
SNMP Replies
SNMP Traps
Retrieve (get)
management
information
Agent
MIB
Alter (set)
management
information
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
Challenges to IT Service Management
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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
• 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