Enterasys Networks 6H308-48, 4H4285-49, 9033989-06 Connecting to the Network

Connecting to the Network

Matrix DFE-Gold Series PoE Module 4H4285-49 Installation Guide 3-13

Connecting to the Network

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

segmentsfromthenetworkorotherdevicestothe4H4285‐49(“ConnectingUTPCablesto

4H4285‐49”onpage3‐13).

ThefixedRJ45frontpanelconnectionsofthe4H4285‐49are10/100Mbpsports.The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.

ThefixedRJ45frontpanelconnectorsofthe4H4285‐49alsosupportPoE‐compliant

connectionstoPDs(powereddevices)thatrequire48VdcthroughtheUTPcableto

operate.Whetherthe48VdcisavailablethroughthebackplaneofanN5chassisor

externallyfromanN‐POEPowerSystem,youcanverifyifthereispowerateachportas

describedlaterinthisprocedure.

Note: If the DFE module is being installed in a network using Link Aggregation, there are

rules concerning the network cable and port configurations that must be followed for Link

Aggregation to operate properly. Before connecting the cables, refer to the Enterasys

Matrix DFE-Gold Series Configuration Guide for the configuration information. For details

on how to obtain manuals, refer to “Related Documents” on page xvi.

Note: All RJ45 front panel ports on the 4H4285-49support Category 5 Unshielded

Twisted Pair (UTP) cabling with an impedance between 85 and 111 ohms. Category3

cable may be used if the connection is going to be used only for 10 Mbps.

Caution: To prevent damage to the equipment, do not connect the PoE supported ports

(1 through 48) to segments running between buildings. Keep connections to equipment

within the building.

Precaución: Para evitar que el equipo se dañe, no conecte los puertos PoE

(1 a 48) a segmentos que vayan de un edificio a otro. Mantenga las conexiones de los

equipos dentro del edificio.