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1、,Tivoli IBM Tivoli Network Manager Componentsand Overview,2,Agenda,Network Manager FamilyNetwork Manager IP Architecture OverviewFunctional Modules of Network Manager IPAutodiscoveryMonitoring Root Cause AnalysisInventoryVisualisationQ&A,3,The Tivoli IBM Network Management Architecture,Data Networks
2、,Systems/Applications,Voice Networks,Management Systems,End User Experience/Transaction Monitoring,Security/Firewalls,Non-IT Resources,ObjectServer,4,IBM Tivoli Network Manager family of products,Network Manager IP EditionAuto-discovery of network elements and connectivityNetwork VisualisationAuto-c
3、onfigured active polling(class-based management)Topology-based event correlation(root-cause analysis)Network Manager Transmission EditionDiscovery of transmission networksMonitoring of transmission networks,5,IBM Tivoli Network Assurance Network Manager IP,Automated network discoverydiscovers all la
4、yer 2/3 network devices,interfaces and layer 2/3 connectivity.supports the following network technologies:IP,Ethernet,CDP,ATM(ILMI&PNNI),Cisco Frame Relay,HSRP,VLAN,static NATNetwork topology visualizationAuto-partitioning of topology providing custom viewsActive polling of network devicesRoot cause
5、 analysis,6,Network Model provided by Network Manager Auto-discovery,Network Visualization&Asset ReportingAuto-Configuration of active network monitoring systemsEvent Enrichment&CorrelationBased upon connectivity&containment relationsExport to Inventory&Provisioning Systemse.g.CCMDB,7,Network Visual
6、ization,Network Managers web-based visualizationWeb-basedEmbed Network Topology Views in Portal viewsVisualize multiple management domainsSingle point for network visualisation regardless of deploymentConsolidation point for operations“Follow the Sun”operationsTopology“Manager of Managers”Simplified
7、 Map management Maps automatically updated after new discovery no need for manual map updatesAlter and save map layout and appearanceControl user access to mapsPan&Zoom etc Tools Integration“Right-click”on device icon to server-side OAM tools,8,Network Manager Topology-based Root Cause Analysis,Topo
8、logy based-the event stream is analysed in the context of the discovered relationshipsPhysical relationshipsLogical relationships Root cause analysis can be performed on any events from any sourceEvents are correlated together and updated with their status as the RCA is evaluatedRootCause an event t
9、hat causes symptomsSymptom an event caused by a root causeDynamic root cause analysis re-calculates the root cause and symptoms as new events arrive Complex root cause analysisSimple hierarchical networksComplex meshed networksRemote dependencies(e.g.OSPF,BGP)Intra device dependencies(e.g.Card failu
10、res)Inter device dependencies(e.g.Cable failures),9,Agenda,Network Manager FamilyNetwork Manager IP Architecture OverviewFunctional Modules of Network Manager IPAutodiscoveryMonitoring Root Cause AnalysisInventoryVisualisationQ&A,10,Network Manager Process,Tivoli Network Manager IP discovery agents
11、interrogate the network,The Tivoli Network Manager Architecture,Device existence and connectivity information is converted into a network topology where it is stored in the Network Manager database,OMNIbus probes receive events from the network and send network events to the ObjectServer,If a proble
12、m or resolution is detected,the polling agents generate events and send them to the ObjectServer,Polling agents poll the network testing for conditions such as device availability and SNMP threshold breaches,The Event Gateway sends events to RCA engine.RCA engine performs RCA on these events and sen
13、ds them back to the Event Gateway,which in turn sends them back to the ObjectServer,11,Agenda,Network Manager FamilyNetwork Manager IP Architecture OverviewFunctional Modules of Network Manager IPAutodiscoveryMonitoring Root Cause AnalysisIntelligent GatewayTopology awareEnrichmentInventoryVisualisa
14、tionQ&A,12,Functional Overview-Autodiscovery,Goal is to build a“model”to the logical and physical relationships found in the networkPlug n Play Agent based discovery architectureAdaptable architecture-new technologies can be quickly supportedCustomer extensibleMib variablesUnsupported devices etcVen
15、dor and technology specific agentsMPLS(L2/L3 VPNs)NAT ATM,Frame RelayIBM TivoliSSM L2 SwitchesNAT environments Support for SNMP v1/2/3,Telnet,ssh v1/v2,13,Functional Overview-Autodiscovery,Sensitive to network bandwidth and device loadingWeb based administration(Multiple domains)RediscoveryAlways on
16、 discoveryEvent driven rediscovery-triggered as new devices are added to the networkFlexible schedulingAdaptable scope-discover a single device or set of devices,a subnet or the whole network Adaptable/flexibleAdd external data to the discovery-allows more flexible partitioningData agnosticInformati
17、on can be from an EMS as easily as a network elementAllows Network Manager to act as a topology Manager-of-ManagersJava,Perl APIs allow custom discovery agents to be created,14,DISCOVERY,ARP,Telnet,SNMP,Other,FRAME,VLAN,Data Processing,Stitchers,MPLS,Switch,ATM,VPN,Detail,Switch,FRAME,ATM,MPLS,VLAN,
18、3rdPartyNon-standard,DNS,Device Finders,Trap,Ping,File,Helper Server,Sniffer,Discovery Process-Finders,Agents,Helpers,API,Topography Model,Stitchers,C+PerlJava,Architecture Home,Features:Full Discoveryor Discover only Certain DevicesStatic NAT supportDynamic partial rediscovery,15,DISCOVERY,ARP,Teln
19、et,SNMP,Other,FRAME,VLAN,Data Processing,Stitchers,MPLS,Switch,ATM,VPN,Detail,Switch,FRAME,ATM,MPLS,VLAN,3rdPartyNon-standard,DNS,Device Finders,Trap,Ping,File,Helper Server,Sniffer,Discovery Process,Agents,Helpers,API,IP Address,Topography Model,Stitchers,C+PerlJava,Architecture Home,Features:Broad
20、-based agent supportRFC Standards-based devices require no additional config.Detailed inventoryExtensible,16,DISCOVERY,ARP,Telnet,SNMP,Other,FRAME,VLAN,Data Processing,Stitchers,MPLS,Switch,ATM,VPN,Detail,Switch,FRAME,ATM,MPLS,VLAN,3rdPartyNon-standard,DNS,Device Finders,Trap,Ping,File,Helper Server
21、,Sniffer,Discovery Process,Agents,Helpers,API,IP,SysDescr,OID,IP Address,Topography Model,Stitchers,C+PerlJava,Architecture Home,Features:Leverage CDP,Telnet,HSRP,etc.MPLS support for Cisco,Unisphere,Juniper through TelnetUses best information.,17,DISCOVERY,ARP,Telnet,SNMP,Other,FRAME,VLAN,Data Proc
22、essing,Stitchers,MPLS,Switch,ATM,VPN,Detail,Switch,FRAME,ATM,MPLS,VLAN,3rdPartyNon-standard,DNS,Device Finders,Trap,Ping,File,Helper Server,Sniffer,Discovery Process,Agents,Helpers,API,IP,SysDescr,Local interfaces,etc.,IP,SysDescr,OID,IP Address,Stitch,Topography Model,Stitchers,C+PerlJava,Architect
23、ure Home,18,Agenda,Network Manager FamilyNetwork Manager IP Architecture OverviewFunctional Modules of Network Manager IPAutodiscoveryMonitoring Root Cause AnalysisIntelligent GatewayTopology awareEnrichmentInventoryVisualisationQ&A,19,Functional Overview-Monitoring,ICMP and SNMP(v1/2/3)Active polle
24、rs provided by Network ManagerPassive monitors(syslog and SNMP traps)provided by the appropriate Omnibus probesAll events can be used in RCA,active and passive from any sourceClass based monitoring-differential monitoring for different classes of device/areas of the networkClass membership can be ba
25、sed on any topology attributesDevice Type,vendor,IP address etc.User extensible e.g.customer name User configurable monitoring and RCAPolling adapts to changes in the network,20,Agenda,Network Manager FamilyNetwork Manager IP Architecture OverviewFunctional Modules of Network Manager IPAutodiscovery
26、Monitoring Root Cause AnalysisIntelligent GatewayTopology awareEnrichmentInventoryVisualisationQ&A,21,The Need for Root Cause Analysis,192.68.23.424-DEC-02 12:19:01Not responding to ping192.68.32.624-DEC-02 12:19:06Not responding to ping192.68.81.724-DEC-02 12:19:07Not responding to ping192.68.43.82
27、4-DEC-02 12:19:07Not responding to ping192.68.44.824-DEC-02 12:19:54Not responding to ping192.68.64.1224-DEC-02 12:20:02Not responding to ping192.68.44.724-DEC-02 12:20:06Not responding to ping192.68.64.1124-DEC-02 12:20:23Not responding to ping192.68.32.224-DEC-02 12:21:11Not responding to ping192.
28、68.10.5224-DEC-02 12:21:13Not responding to ping192.68.23.1524-DEC-02 12:21:13Not responding to ping192.68.58.1024-DEC-02 12:21:17Not responding to ping192.68.43.924-DEC-02 12:21:24Not responding to ping192.68.81.624-DEC-02 12:21:25Not responding to ping,Is there a relationship between any of these
29、events?Which event should be investigated first?,22,Understanding Connectivity-Based Root Cause Analysis,Devices reporting problems or that cannot be reached due to network failure,23,By understanding the relationships between devices it becomes possible to understand the relationships between the e
30、vents that are originating from those devices.,Understanding Connectivity-Based RCA(continued),24,Understanding Connectivity-Based RCA(continued),Event precedence and topological information is evaluated and root cause events are identified.Other events are flagged as symptom events.,25,Network Mana
31、ger IPs Topology-based Event Correlation sub-system identified the root-cause User selects Show in Topology,Symptom events showing Impacted devices,Root Cause Device,Something fails in network lots of devices are unreachable,26,Agenda,Network Manager FamilyNetwork Manager IP Architecture OverviewFun
32、ctional Modules of Network Manager IPAutodiscoveryMonitoring Root Cause AnalysisInventoryVisualisationQ&A,27,Asset Reports using BIRT,Report generator,BIRT report templates,NCIM,CLI,HTML/PDF,Webtop Server,Webtop,Report Tab,Get reportattributes,Update reporttemplates,CLI,CLI,Driver,Network Manager Se
33、rver,Tivoli ReportingInfrastructure,Out-of-the-box reportsNetwork inventory reports(includes existing NfAM reports)Device availability reports(includes fault information)Discovery feedback reportsRun reports daily and have them always at hand(PDF or HTML)Run a report on-demandDownload the BIRT repor
34、t designerFramework for customizing existing reports or generating new ones,28,Asset Reports using BIRT-examples,On-demand report to troubleshoot discovery configurations all devices where SNMP access failedInterface Availability Report-PDF,29,CCMDB Integration,Discovery Library Adapter(DLA)provides
35、 the following information from Network Manager to the CCMDB basic physical inventory resourcesconnectivity relationships IPv4 subnetting and addressing information to the CCMDBUse case scenariosFrom Network Manager IP Show the current configurationShow configuration change history(Has a configurati
36、on change caused an outage?)From Tivoli Application Dependency Discovery(TADDM)Launch topology network views(in Network Manager)to show the alarmed state and connectivity of a particular device,30,Agenda,Network Manager FamilyNetwork Manager IP Architecture OverviewFunctional Modules of Network Mana
37、ger IPAutodiscoveryMonitoring Root Cause AnalysisIntelligent GatewayTopology awareEnrichmentInventoryVisualisationQ&A,31,Functional Overview Visualisation Webtop and Topoviz,Two viewsHop view traditional network map view Network views filter based partitioning of the topologyTopoviz is a Webtop plug
38、in Provides the unified view of both events and topologyTight integration allows context sensitive views to be launched from AEL and topology views.MIB browser(server side)Discovery GUI(administer multiple domains centrally)Multiple domain support View the topology for multiple Network Manager domai
39、ns(installs)from a central point,32,IBM Tivoli Network Assurance Network Manager IP,33,IBM Tivoli Network Assurance Network Manager IP,34,IBM Tivoli Network Assurance Network Manager IP,35,Integration with Hardware Vendor Fault Diagnosis/Troubleshooting Tools,Select“View OSPF Information”,36,Integra
40、tion with Hardware Vendor Fault Diagnosis/Troubleshooting Tools,Vendor specific MPLS OAM&Trouble-shooting tools,37,Functional Overview Visualisation Hop View,38,Functional Overview Visualisation Network Views,39,Functional Overview Visualisation Event List Integration,Bi-directional Any topology entity to an event listAny Event to associated topology(Network or Hop View),40,Q&A,Questions?,
