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76 SunFDDI/P1.0 AdapterUser’sGuide—May1997
7
Figure 7-5 Hierarchical Tree of Concentrators
Advantages
The tree of concentrators configuration offers many of the advantages offered
by the standalone concentrator, described on page 72; however, it allows a
much larger number of stations to be connected.
The cumulative length of the network is increased significantly because the
limitation on distance occurs between the end-station and the nearest
concentrator, and not between the end-station and the root concentrator.
FDDI SAS
FDDI SAS
FDDI SAS
FDDI SAS FDDI SAS FDDI SAS
FDDI SAS FDDI SAS
FDDI SAS FDDI SAS
FDDI SAS
FDDI SAS
SAC or DAC
SAC or DAC
SAC or DAC
SAC or DAC
SAC or DAC
(Root concentrator)
- SunFDDI/P 1
- 1.0AdapterUser’sGuide 1
- FCCClassANotice 3
- FCCClassBNotice 3
- Declaration of Conformity 5
- Contents 7
- Contents ix 9
- Contents xi 11
- Contents xiii 13
- HowthisBookisOrganized 19
- UNIXCommands 21
- TypographicConventions 22
- ShellPrompts 22
- RelatedDocuments 23
- OrderingSunDocuments 23
- GettingHelp 24
- SunWelcomesYourComments 24
- SunFDDI/POverview 27
- FDDIConformance 28
- HardwareInstallation 29
- DeviceInstancesandDeviceNames 30
- InstallationItems 30
- ConnectingFiberOpticCables 31
- MIC-to-MICCoupler 33
- CleaningtheFiberOpticCable 33
- HardwareInstallation 9 35
- InstallingSunFDDI/PSoftware 37
- InstallationRequirements 38
- # mkdir /cdrom/sunfddip_1_0 39
- ▼ To Finish the Installation 43
- ▼ To Check the Installation 44
- ▼ Unloading Drivers 45
- ▼ To Use pf_install_agents 46
- RemovingSunFDDI/P 48
- ImprovingNetworkPerformance 49
- HighPerformanceFDDINetworks 50
- RingLatencyImprovement 50
- DataThroughputImprovement 51
- PerformanceAcrossBridges 51
- TargetTokenRotationTime(TTRT) 52
- ImprovingPerformance 53
- ▼ To Tune the Low Water Mark 54
- TuningtheSocketOptions 55
- MTUPathDiscovery 56
- TroubleshootingandDiagnostics 59
- TroubleshootingChecklist 60
- ▼ To Check the IP Addresses 62
- ▼ To Check the IP Routing 63
- ▼ To Check the SMT Traffic 64
- SolvingCommonProblems 65
- SunFDDINetworks 73
- FDDINetworkArchitecture 75
- FDDINetworkModel 76
- Physical(PHY)Layer 77
- MediaAccessControl(MAC)Layer 78
- StationManagement(SMT)Layer 78
- • Gather network statistics 79
- • Generate status reports 79
- FDDIStations 82
- • Dual-attached station (DAS) 82
- Dual-AttachedStation(DAS) 83
- FDDIConcentrators 84
- FDDIFailureRecovery 86
- OpticalBypassSwitches 88
- FDDIRingOperation 91
- FDDIPerformance 92
- • Network load 93
- • Network efficiency 93
- • Bus architecture 93
- FDDINetworkTopologies 95
- BasicDual-RingNetwork 96
- StandaloneConcentrator 98
- ConcentratorswithDual-Homing 100
- TreeofConcentrators 101
- Advantages 102
- RingofTrees 103
- Disadvantages 104
- MixedFDDI/EthernetNetworks 105
- • Route 1 (across FDDI link): 108
- FDDINetworkTopologies 83 109
- UsingtheSunFDDI 111
- NetworkUtilities 111
- <mac_address> 112
- InterpretingLocalStatistics 115
- • MAC availability 116
- • Connection initialization 117
- • Maintenance support 117
- Ring_OP (RingOperational) 118
- XmitP (Transmit Packets) 118
- ExampleLocalStatistics 119
- Phy(PhysicalConnection) 121
- Frame(FramesReceived) 121
- Error(ErrorFrames) 121
- Lost(LostFrames) 122
- SA(StationAddress) 122
- UNA(UpstreamNeighbor Address) 122
- ExampleNeighborStatistics 123
- SMTFrameClassesandTypes 126
- FilteringOutputfrompf_smtmon 127
- ManagingFDDIStations 129
- UsingSunNetManager 129
- # /opt/SUNWconn/bin/snm —i 135
- InterpretingTrapsandErrors 140
- MACAddressFormats 143
- • Canonical format 143
- • Ring format 143
- DevelopingApplicationsthat 145
- RunoverSunFDDI/P 145
- Data link service user 147
- Data link service provider 147
- DLPIAddressing 148
- 0 Not supported 149
- SettingUpServers 151
- % /usr/bin/df -k /export 152
- ▼ To Set Up a Server 153
- ▼ To Update the NIS Server 158
- ▼ To Boot a Diskless Client 159
- FrequentlyAskedQuestionsAbout 161
- Glossary 167
- Glossary 143 169
- Glossary 145 171
- Numerics 173
- Reader Comment Card 181
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