Enterasys 2S4082-25-SYS Guide d'installation Page 70
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Overview
6-2 Initializing the NAC Controller
TheportslocatedinthelowerrowsoftheNACControllerarereferredtoasʺdownstreamports,ʺ
andconnectdownlinktoinfrastructuredevicessuchasaccesslayerswitchesinthenetwork.The
twogigabitEthernetportslocatedatthetopoftheNACControllerarereferredtoasʺupstream
ports,ʺand
connectuplinktoupstreamdevicessuchascorerouters.The10/100Ethernetport
locatedatthetopoftheNACControllersupportsmanagementfunctionalitywithan
Out‐Of‐Bandmanagementconfiguration,asexplainedbelow.SeeFigure 6‐1forthelocationofthe
differentNAC Controllerporttypes.
Itisimportanttonote
thattheNACControllerappliancetransparentlybridgespacketsatlayer2
fromdownstreamportstoupstreamports,downstreamportstootherdownstreamports,
upstreamportstodownstreamports,andupstreamporttootherupstreamports. Therefore,itis
notnecessarytohavea1:1downstreamporttoupstreamportconfiguration
ontheNAC
Controller.Furthermore,thetrafficenforcementpointontheNACControllerisimplementedas
trafficingressedthedownstreamportsperMACaddressorIPaddressbeforethetrafficisbridged
throughtheNACControllertoanyotherport.Asaresultoftrafficsourcedfromanendsystem
being
appropriatelyfiltered(forexample:forwarded,discarded,containedtoaVLAN,or
prioritized)uponingresstotheNACControllerportbeforeitisbridged,theflowoftrafficfrom
eachdownstreamendsystem issecurelycontrolledtoallotherdevicesconnectedtoother
upstreamanddownstreamportsonthe NACController.
Figure 6-1 NAC Controller Ports
Figure 6‐3throughFigure 6‐6displaytheconfigurationtopologiesforthefourNAC Controller
installationtypes.Ineachcase,upstreamportsontheNACControllerconnecttothenetworkcore
inthedirectionofwheretheNetSightmanagementserverconnectstothenetwork,althoughitis
notnecessarytoconnecttheNetSight
managementserverupstreamfromtheNACController.
DownstreamportsontheNACControllerconnecttothenetworkedgewhereendsystemsare
connecting.
Note: Figure 6-1 displays a 2S4082-25-SYS, but NAC Controller ports are in the same
location on both systems.
- Enterasys 1
- orcontactEnterasys 5
- (Circuit Modules) 6
- (Circuit Breakers) 6
- VCCI Notice 7
- BSMI EMC Statement — Taiwan 7
- Safety Information 7
- Class 1 Laser Transceivers 7
- Declaration of Conformity 8
- Contents 11
- Chapter 5: Troubleshooting 12
- About This Guide 17
- Related Documents 18
- Typographical Conventions 19
- Commonly Used Acronyms 19
- Getting Help 20
- Introduction 21
- The N1-7C111 Chassis 22
- The NAC Controller PEP 22
- Overview 23
- 1-4 Introduction 24
- 1-6 Introduction 26
- Standards Compatibility 27
- LANVIEW Diagnostic LEDs 27
- 1-8 Introduction 28
- Site Guidelines 29
- Configuration Guidelines 30
- LANVIEW LEDs 30
- Link Aggregation 32
- 10BASE-T Network 32
- 100BASE-TX Network 32
- 1000BASE-T Network 32
- 1000BASE-SX/LX/ELX Network 33
- Order of Installation 36
- Installing the Rubber Feet 37
- N1 7C111 d 39
- Cooling Fans 40
- Required Tools 41
- Preparation 42
- engine o el módulo 42
- Installation 43
- (MGBIC-02) 4 Port slot 44
- Removing the Mini-GBIC 45
- Connecting to the Network 47
- Switches and End User Devices 49
- 2 Other device port 50
- 3 Release tab 52
- What Is Needed 54
- Connecting to a Modem 56
- RJ45 DB9 57
- Completing the Installation 58
- Enterasys Matrix 59
- Troubleshooting 61
- Using LANVIEW 62
- 5-2 Troubleshooting 62
- Table 5-1 LANVIEW LEDs 63
- Troubleshooting Checklist 64
- 5-6 Troubleshooting 66
- 5-8 Troubleshooting 68
- NAC Controller 74
- Setup the VLAN Configurations 84
- Physical Specifications 91
- Environmental Requirements 92
- Regulatory Requirements 92
- Specifications 93
- Specifications (continued) 94
- Item Specification 95
- Regulatory Compliance 100
- Mode Switch Bank Settings 101
- Location of Memory Modules 102
- Removing the DRAM SIMM 105
- Installing the DRAM SIMM 105
- Index-2 108
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