Cisco 30 VIP Especificaciones descargar pdf (Pagina 31)

VIP-FE-TX Installation and Configuration 31

FE-TX Port Adapter Functions

IEEE 802.3u speciﬁes the following different physical layers for 100BASE-T:

• 100BASE-TX—100BASE-T, half and full duplex over Category 5 unshielded twisted-pair

(UTP), Electronics Industry Association/Telecommunications Industry Association

[EIA/TIA]–568-compliant cable

• 100BASE-FX—100BASE-T, half and full duplex over optical ﬁber

• 100BASE-T4—100BASE-T, half and full duplex over Category 3, 4, or 5 UTP or shielded

twisted-pair (STP) cabling with four pairs; also called 4T+ or T2, which is 2-pair UTP over

Category 3 cable.

Each physical layer protocol has a name that summarizes it characteristics in the format

speed/signaling method/segment length where speed is the LAN speed in megabits per second

(Mbps), signaling method is the signaling method used (either baseband or broadband), and segment

length is typically the maximum length between stations in hundreds of meters. Therefore,

100BASE-T speciﬁes a 100-Mbps, baseband LAN with maximum network segments of 100 meters

(or 400 meters for 100BASE-FX).

FE-TX Port Adapter Description and Fast Ethernet Speciﬁcations

The FE-TX port adapter is available in the following VIP conﬁgurations: FE-TX/blank, FE-TX/4E,

or FE-TX/FE-TX. Figure 15 shows the VIP-FE-TX. The FE-TX port adapter has a handle attached,

but this handle is not shown to allow a full view of the detail on the port adapter’s faceplate.

Figure 15 VIP with One FE-TX Port Adapter Installed (Horizontal Orientation Shown)

Caution To prevent system problems, do not remove port adapters from the VIP motherboard, or

attempt to install other port adapters on the VIP motherboard.

H4709

DRAM

SIMMs

FE-TX in

port adapter

slot 0

Port adapter blank

in port adapter

slot 1

Port adapter

handles not shown

Microcode

Flash U17

Bus connector

MII

LINK

RJ45

FAST ETHERNET

ENABLED

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Cisco 30 VIP Especificaciones Pagina 31