Enterasys Networks 7S4280-19-SYS, 2S4082-25-SYS Connecting to the Network

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

Thissectionprovidestheproceduresforconnectingunshieldedtwistedpair(UTP)segmentsfrom

thenetworkorotherdevicestothe2S4082‐25(“ConnectingUTPCablestothe2S4082‐25”on

page 4‐7)andconnectingfiberopticcablestotheMini‐GBICsofthe7S4280‐19and2S4082‐25

(“ConnectingFiber‐OpticCablestoMini‐GBICs”onpage 4‐11).

ThefixedRJ45frontpanelconnectionsofthe2S4082‐25are10/100/1000 Mbpsports.Theseports

haveinternalcrossovers,andalsosupportautomatic‐polaritysensingwhenconfiguredfor

automatic‐negotiation.

Ifautomatic‐negotiationisnotactivatedonaport,useastraight‐throughcablewhenconnectinga

workstationtotheport.Whenconnectinganetworkingdevicetotheport,suchasabridge,

repeater,orrouter,useacrossovercable.

Ifaportissetforauto‐negotiation,automatic‐polaritysensingisalsoactivated.

Automatic‐polaritysensingeliminatestheneedforacrossovercable,regardlessiftheconnection

istoanothernetworkdeviceoraworkstation.

1N1 Chassis slot 5Metal back panel

2FTM2 backplane connectors 6Upper locking tab (shown in closed position)

3NAC Controller PEP card 7Lower locking tab (shown in closed position)

4Card 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 2S4082-25support 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.