NM Tools and Systems

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NM Tools and Systems

• Sri Sharma
• Oakland University
• Spring 2003

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Network Management Tools

• SNMP command tools
• MIB Walk
• snmpsniff

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SNMP Command Tools

• snmptest
• snmpget
• snmpgetnext
• snmpset
• snmptrap
• snmpwalk
• snmpnetstat

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SNMP Get Command
snmpget noc5.btc.gatech.edu public
system.sysDescr.0 system.sysDescr.0 OCTET
STRING "SunOS noc5 5.6 Generic_105181-03 sun4u"
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SNMP Get Next Command
snmpgetnext noc5.btc.gatech.edu public
interfaces.ifTable.ifEntry.ifIndex.1
interfaces.ifTable.ifEntry.ifIndex. 2
INTEGER 2
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SNMP Set Command

• Command snmpset host community

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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 0 0 .
.
CLOSED tcp 0 0 localhost.46626
localhost.3456 ESTABLISHED tcp 0 0
localhost.46626 localhost.3712
ESTABLISHED tcp 0 0 localhost.46626
localhost.3968 ESTABLISHED tcp 0 0
localhost.46626 localhost.4224
ESTABLISHED tcp 0 0 localhost.3456
localhost.46626 ESTABLISHED tcp 0 0
localhost.3712 localhost.46626
ESTABLISHED tcp 0 0 localhost.3968
localhost.46626 ESTABLISHED tcp 0 0
localhost.4224 localhost.46626
ESTABLISHED tcp 0 0 noc5.41472
noc5.4480 ESTABLISHED tcp 0 0
noc5.41472 noc5.4736
ESTABLISHED tcp 0 0 noc5.4480
noc5.41472 ESTABLISHED tcp 0 0
noc5.4736 noc5.41472
ESTABLISHED
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SNMP Browser

• Command snmpwalk host community variable name
• Uses Get Next Command
• Presents MIB Tree

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SNMP Sniff

• snmpsniff -I interface
• A tool in Linux / FreeBSD environment
• Puts the interface in promiscuous mode and
  captures snmp PDUs.
• Similar to tcpdump

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Protocol Analyzer
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RMON Probe
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Network Monitoring with RMON Probe
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Network Statistics

• Protocol Analyzers
• RMON Probe / Protocol analyzer
• MRTG (Multi router traffic grouper)
• Home-grown program using tcpdump

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Traffic Load Source
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Traffic Load Destination
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Traffic Load Conversation
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Protocol Distribution
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MRTG

• Multi Router Traffic Grouper (Oeticker and Rand)
• www.ee.ethz.ch/stats/mrtg/
• Generates graphic presentation of traffic on Web
• Daily view
• Weekly view
• Monthly view
• Yearly view

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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

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NMS Components
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NMS Components
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Multi-NMS Configuration
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Network Configuration

• Configure agents
• Configure management systems
• Community administration parameters
• Community name
• MIB view
• Trap targets
• Auto-discovery Scope

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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

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Global View
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Domain View
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Interfaces View
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Segment View
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Commercial NMS System Solutions

• Low End NMS
• Enterprise NMS
• Centralized
• Distributed
• System and Network Management

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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

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HP OpenView Platform
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OpenView Distributed Platform
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Distributed OpenView NNMs
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Cabletron Spectrum