1. Session 13
NM Tools
Adapted from Network Management: Principles and Practice © Mani Subramanian 2000 and solely used for Network Management course at Universitas Bina Nusantara

2. NOC Tool Categories (RFC 1470)
Network
Management
Tools
Mechanism
Operating
Environment
Acquisition
Resources /
Components
Functional
Examples :
Alarm
Manager
Security
Traffic
Examples:
Bridge
Ethernet IP
NFS
NMS
Ping
SNMP X
DOS
Windows NT
Sun
Unix
Free
Library
Sourcelib
Developed by IETF Working Group on NOC Tools
Update available via
news:comp.networks.noctools
ftp://wuarchive.wustl.edu/doc/noctools

3. BERT (Bit Error Rate Test)
Modem B
Loop
Back
Physical layer monitoring tool
Generates and detects bits
Bit error rate (BER) is calculated by comparing the transmitted pattern with received pattern
Loop back is a feature of the modem
BER can be measured for a modem or two modems and the link in between

4. Network Software Tools
Status monitoring tools
Traffic monitoring tools
Route monitoring tools

5. Network Management Tools
SNMP command tools
MIB Walk
snmpsniff

6. SNMP Command Tools snmptest snmpget snmpgetnext snmpset snmptrap
snmpwalk
snmpnetstat
Test tool is an interactive tool to get values of several managed objects, one at a time.
Get, Get-next and Set are the SNMP commands that we learned under SNMP architecture / messages. Execution of these will return an SNMP Response message.
SNMPWalk uses snmpgetnext to trace the entire MIB.
Network status command is used to test the status of network connections of a host.

7. Network Status Command: snmpnetstat host community
Useful for finding status of network connections
% snmpnetstat noc5 public
Active Internet Connections
Proto Recv-Q Send-Q Local Address Foreign Address (state)
tcp *.* *.* CLOSED
tcp localhost localhost ESTABLISHED
tcp localhost localhost ESTABLISHED
tcp localhost localhost ESTABLISHED
tcp localhost localhost ESTABLISHED
tcp localhost localhost ESTABLISHED
tcp localhost localhost ESTABLISHED
tcp localhost localhost ESTABLISHED
tcp localhost localhost ESTABLISHED
tcp noc noc ESTABLISHED
tcp noc noc ESTABLISHED
tcp noc noc ESTABLISHED
tcp noc noc ESTABLISHED

8. SNMP Browser Command: snmpwalk host community [variable name]
Uses Get Next Command
Presents MIB Tree

9. Protocol Analyzer
PROTOCOL
ANALYZER
Data
Capture
Device
LAN
Raw data transferred on
Modem / WAN or LAN Link
Analyzes data packets on any transmission line including LAN
Measurements made locally or remotely
Probe (data capture device) captures data and transfers to the protocol analyzer (no storage)
Data link between probe and protocol analyzer either dial-up or dedicated link or LAN
Protocol analyzer analyzes data at all protocol levels

10. MRTG Multi Router Traffic Grouper (Oeticker and Rand)
Generates graphic presentation of traffic on Web
Daily view
Weekly view
Monthly view
Yearly view

11. Enterprise Management
Management of data transport
IBM Netview, Sun Solstice, HP OpenView, Cabletron Spectrum
Systems management
CA Unicenter and Tivoli TME
Network and systems management
Partnerships
Telecommunications management
TMN, Operations systems
Service management and policy management

12. NMS Components Hardware Operating System Core Application Services
Vendor Specific NMS Services
Common SNMP Services
Core Application Services
Operating System
Hardware

13. NMS Components Component Service Example Hardware Processor Sun Sparc
Monitor
HP 9000
Mouse and Keyboard PC
Communications
Operating system
OS services
UNIX
LINUX / FreeBSD
Solaris
MS Windows 95 / 98 / NT
Core application
Display
OpenView
GUI
SunNet Manager
services
Database
Solstice Enterprise Manager
Report generation
MS Windows
Communication services
Common SNMP
SNMPv1 messages
OpenView Network
Node Manager
services
SNMPv2 messages
MIB management
Basic SNMP Applica -tions
IBM NetView
SunNet Manager
3rd party NMS API
Solstice Enterprise Manager
Vendor -
specific
MIB management
CiscoWorks
NMS services
SNMP applications
Transcend
Config. management
Physical entity display

14. Multi-NMS Configuration
Managed
Network
Elements
Vendor 2
NMS
Vendor 1
Vendor 3
Configuration
Manager of
Managers
Fault
Performance

15. Network Configuration
Configure agents
Configure management systems
Community administration parameters
Community name
MIB view
Trap targets
Auto-discovery : Scope

16. Network Monitoring By polling By traps
Failure indicated by pinging or traps
Ping frequency optimized for network load vs. quickness of detection
Trap messages: linkdown, linkUp, coldStart, warmStart, etc.
Network topology discovered by auto-discovery
Monitoring done at multiple levels - “drilling”

17. Commercial NMS Enterprise NMS Hewlett-Packard OpenView
Sun SunNet Manager
IBM Netview
Low End NMS
SNMPc
System & Network Management
Computer Associates Unicenter TNG
Tivoli TME / Netview

18. Commercial NMS Low End NMS Enterprise NMS Centralized Distributed
System and Network Management

19. HP OpenView Network Node Manager
Auto-discovery and mapping
Drill-down views
Fault monitoring
Event monitoring
MIB Browser
SNMP tools
Traffic monitoring
3rd party integration
OpenView is Hewlett-Packard’s platform for Network Management
Many NMSs use OpenView Platform: CiscoWorks, etc
Drill-down Map Hierarchy

20. HP OpenView Platform Open, modular, and distributed architecture
GUI
Management
Applications
API
Services
Managed
Objects
Open, modular, and distributed architecture
Object oriented design, Open API-based architecture

21. OpenView Distributed Platform
Postmaster
CMIP
SNMP
TCP/IP
Routing
Event
Services
APIs
Management Applications
Communications Infrastructure
Network
Postmaster integrates all management services multiple protocol stacks: SNMP, CMIP, TCP/IP
Routing enables distributed message routing
Event services control event and alarm messages
Management services interface with management applications via APIs

22. Distributed OpenView NNMs
Enterprise Network
Site A
Site B
Site C
OpenView NNM
Collection Station A
Collection Station B
Collection Station C
Management Station
An enterprise network managed by multiple NMSs
Collection stations could be regular NNMs or entry-NNMs (100 nodes)
Filtered information sent to MoM (top level NNM) reduces traffic
MoM integrates and presents enterprise data