Cisco XR 12816 Manuale di installazione - Pagina 24

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Route Processor

PRP PCMCIA Card Slots and Status LEDs

Note

PRP Ethernet Ports and Status LEDs

Cisco XR 12416 and Cisco XR 12816 Router Chassis Installation Guide

1-24

Two PCMCIA card slots (slot 0 and slot 1) provide the PRP with additional flash

memory capacity. All combinations of different flash devices are supported by the

PRP. You can use ATA flash disks, Type 1 or Type 2 linear flash memory cards,

or a combination of the two.

The PRP only supports +5.2 VDC flash memory devices. It does not support

+3.3 VDC PCMCIA devices.

Status LEDs (Slot-0 / Slot-1) indicate when the flash memory card in that slot is

accessed (see

Figure

1-11). Each slot has an eject button (located behind the

cover) to remove a flash card from the slot.

PRP-3 does not have PCMCIA slots (slot 0 and slot 1). PRP-3 has an external

CompactFlash (disk0:) that replaces the PCMCIA slots.

The PRP has two 8-pin media-dependent interface (MDI) RJ-45 ports for either

IEEE 802.3 10BASE-T (10 Mbps) or IEEE 802.3u 100BASE-TX (100 Mbps)

Ethernet connections. These ports are labeled ETH 0 and ETH 1.

The transmission speed of the Ethernet port is not user-configurable. You set the

speed through an autosensing scheme on the PRP which is determined by the

network that the Ethernet port is connected to. However, even at an autosensed

data transmission rate of 100 Mbps, the Ethernet port can only provide a usable

bandwidth of substantially less than 100 Mbps. You can expect a maximum usable

bandwidth of approximately 20 Mbps when using an Ethernet connection.

The following LEDs on the front panel indicate traffic status and port selection

(Figure

1-13):

LINK, EN, TX, RX—Indicate link activity (LINK), port enabled (EN), data

•

transmission (TX), and data reception (RX).

PRIMARY—Indicates which Ethernet port is selected (ETH 0 or ETH 1).

•

Chapter 1

Product Overview

OL-17440-01