Cisco XR 12410 Manual do Utilizador descarregar pdf (Página 41)

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Cisco XR 12410 and Cisco XR 12810 Router Installation Guide

OL-17441-01

Chapter 1 Product Overview

Line Card and Route Processor Overview

PRP SDRAM

The PRP uses Error Checking and Correction (ECC) Synchronized Dynamic

Random Access Memory (SDRAM) to store routing tables, protocols, network

accounting applications, and to run Cisco

IOS software.

Table 1-5 lists the DRAM configurations for the PRP. If you are using:

• One DIMM—Bank 1 (U15) must be populated first.

• Two DIMMs—You cannot mix memory sizes; both banks must contain the

same size DIMM.

Caution DRAM DIMMs must be 3.3-volt, 60-nanosecond devices only. Do not attempt to

install other devices in the DIMM sockets. To prevent memory problems, use the

Cisco approved memory products listed in Table 1-5.

PRP-3 provides more system memory than PRP-2. PRP-3 is shipped with 2 GB

of system memory in each DDR2 DRAMs, for a total of 4 GB and provides an

upgrade option for a total of 8 GB (4 GB x 2 DRAM).

Note The two DIMMs must be of the same sizes. Do not use two different DIMM sizes

together.

Ta b l e 1-5 PRP-2 DRAM Configurations

Total

SDRAM

SDRAM Sockets Number of DIMMs

2 GB

1. Default shipping configuration.

U15 (bank 1)

U18 (bank 2)

One 2 GB DIMM

Two 2 GB DIMMs

4 GB U15 (bank 1)

U18 (bank 2)

One 4 GB DIMM

Two 4 GB DIMMs

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