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Connecting to the Network
Enterasys NAC Controller Hardware Installation Guide 4-7
Figure 4-4 Installing the NAC Controller PEP into the Matrix N1 Chassis
Connecting to the Network
Thissectionprovidestheproceduresforconnectingunshieldedtwistedpair(UTP)segmentsfrom
thenetworkorotherdevicestothe2S4082‐25(“ConnectingUTPCablestothe2S4082‐25”on
page 4‐7)andconnectingfiberopticcablestotheMini‐GBICsofthe7S4280‐19and 2S4082‐25
(“Connecting
Fiber‐OpticCablestoMini‐GBICs”onpage 4‐11).
Connecting UTP Cables to the 2S4082-25
ThefixedRJ45frontpanelconnectionsofthe2S4082‐25are10/100/1000 Mbpsports.Theseports
haveinternalcrossovers,andalsosupportautomatic‐polaritysensingwhenconfiguredfor
automatic‐negotiation.
Ifautomatic‐negotiationisnotactivatedonaport,useastraight‐throughcablewhenconnectinga
workstationtotheport.When
connectinganetworkingdevicetotheport,suchasabridge,
repeater,orrouter,useacrossovercable.
Ifaportissetforauto‐negotiation,automatic‐polaritysensingisalsoactivated.
Automatic‐polaritysensingeliminatestheneedforacrossovercable,regardlessiftheconnection
istoanothernetworkdevice
oraworkstation.
1 N1 Chassis slot 5 Metal back panel
2 FTM2 backplane connectors 6 Upper locking tab (shown in closed position)
3 NAC Controller PEP card 7 Lower locking tab (shown in closed position)
4 Card guides
Note: If the NAC Controller PEP is being installed in a network using Link Aggregation, there are
rules concerning network cables and port configurations that must be followed for Link Aggregation
to operate properly. Before connecting the cables, refer to the Enterasys Matrix
DFE-Diamond/Platinum Series Configuration Guide for the configuration information. For details on
how to obtain manuals, refer to the “Related Documents” on page xvi
.
Note: All RJ45 front panel ports on the 2S4082-25support Category 5 Unshielded Twisted Pair
(UTP) cabling with an impedance between 85 and 111 ohms. Category 3 cable may be used if the
connection is going to be used only for 10 Mbps.