Cisco Performance Routing Engine 5 Manuale

Cisco Performance Routing Engine 5 Hardware Installation Guide

Cisco Performance Routing Engine 5 Hardware Installation Guide 2

What is Cisco Performance Routing Engine 5? 2

General Safety Guidelines 7

Before You Begin 8

Removing and Replacing the Cisco PRE5 Module 9

Upgrading to the Cisco PRE5 Module 18

Upgrading the FPGA Image on the Cisco PRE5 Module 22

Installing the Cisco PRE5 Module Peripherals 23

Troubleshooting the Cisco PRE5 Module Installation 26

Cisco PRE5 Module Part Numbers and Specifications 28

Onboard Failure Logging 30

Additional References 32

Revised: October 25, 2018

Cisco Performance Routing Engine 5 Hardware Installation

Guide

The Cisco Performance Routing Engine 5 (PRE5) is the next-generation processor engine for the Cisco uBR10012 Universal Broadband

Routers. The PRE5 module comprises two separate engines or processors—route processor that performs all control functions of

the PRE5 and the forward packet engine that performs the Parallel eXpress Forwarding (PXF) function and provides fast path

forwarding and output scheduling.

The route processor handles all control traffic and any packets that are unrecognized by the fast path. The route processor also sets

up data structures for the forward packet engine.

What is Cisco Performance Routing Engine 5?

With the introduction of the Cisco uBR-MC3GX60V line cards that dramatically increase the downstream capability for the Cisco

uBR10012 Universal Broadband Routers to 24 Gbps (if all 8 line card slots are used) and the use of the DOCSIS 3.0 wideband SPAs

(with 8 Cisco Wideband SPAs), downstream traffic can increase up to 40 Gbps.

To support this increase in downstream bandwidth and effective with Cisco IOS Release 12.2(33)SCH, the new Cisco Performance

Routing Engine 5 (PRE5) module provides up to 60 Gbps (40 Gbps downstream and 20 Gbps upstream) WAN backhaul capacity

and throughput.

The throughput will vary depending on the packet size.

Note

Effective with September 09, 2014, the Cisco PRE5 uses a new version of the CPU. You must run the

Cisco IOS Release 12.2(33)SCH2 or a later release on the Cisco PRE5 for using the new version of the CPU. The board serial

number of the Cisco PRE5 with the new version of the CPU starts with CAT1837XXXX. The deviation label on the board

is D507963.

Important

The Cisco UBR10 MC5X20 line cards are not supported on the PRE5.

Note

Foam gaskets are required if you are replacing an earlier generation of the PRE module with PRE5.

Note

Features of the Cisco PRE5 module include:

• 512 KB NVRAM

• 4 GB system memory for routing tables

• 256 MB of bootflash memory and 32 MB of read-only memory monitor (ROMMON) flash memory

• Up to 4 GB of eUSB flash memory

The internal embedded USB (eUSB) flash, a mass storage device on the PRE5 and the external USB flash, replace the low

density compact flash card of the PRE4.

These PRE5 USB interfaces are compatible with USB 2.0 specification, and work in the USB-host mode only.

The PRE5 supports only Cisco-certified external USB storage devices.

Note

The Cisco IOS can autodetect the USB disk when it is plugged in. The internal eUSB disk in the PRE5 (the compact flash for

PRE4) is recognized as ‘disk0’; the two external USB disks are recognized as ‘disk1’ and ‘disk2’.

• A 10/100/1000 Megabit Ethernet interface that is the management port of the PRE5

• Error-correcting code (ECC) on all DRAM-based memory systems to support high availability

• Online insertion and removal (OIR) support

• PRE5 insertion and pull out sensor support

• Four SFP+ for backhaul and four SFP+ for board-to-board wiring on the front panel

• Enhanced route processor–forward packet engine interface

Redundant PREs

The PRE module supports redundant operation (two PRE modules in a Cisco uBR10012 chassis). If the primary PRE fails, the

secondary PRE automatically takes over operation of the chassis. Because all Cisco uBR10012 line cards are physically connected

to both the primary and secondary PRE modules, a switchover of PRE modules does not require human intervention to reset the line

cards, as they automatically fail over to the redundant PRE. The PRE module is hot-swappable if there is a redundant PRE module

in the chassis.

To achieve high availability or PRE redundancy, you must use the same model of the PREs in the same chassis. If you have

PRE4 modules and you wish to upgrade, you must upgrade both PREs to PRE5.

Note

If there is only one PRE5 installed in the chassis, only four 10G SFP+ interfaces are used; the remaining four 10G SFP+ interfaces

are in down state. However, if both PRE5 engines are installed in the chassis, and the board-to-board wires are connected, all eight

SFP+ backhaul interfaces are enabled.

Figure 1: PRE5 in the Cisco uBR10012 Chassis

Captive screws2Ejector levers1

Figure 2: PRE5 Faceplate

Alarm LEDs6Alphanumeric display1

Status LEDs7Ethernet port2

4 SFP+ for board-to-board wiring8Console port3

4 SFP+ for backhaul wiring9Auxiliary port4

—USB ports5

Connector Ports

The front panel on the PRE contains these ports:

• Console port—A DCE RS-232 interface used to connect a terminal to the PRE for local administrative access.

• Auxiliary port (AUX)—A DTE RS-232 interface used to connect a modem to the PRE for remote administrative access.

• Ethernet port—A 10/100/1000Base-T Management port used network management LAN.

• USB ports—Used for external USB disks

LEDs

• Two USB LEDs—display the USB disk status.

• Three Alarm LEDs—display the system alarm status, whether Critical, Major, or Minor.

• Two Status LEDs—display the system status to indicate the alarm or failure.

• Eight SFP+ module status LEDs—display the on-board backhaul interface status.

• ACTIVITY—if green indicates packets are being transmitted and received.

• LINK—if green indicates that a carrier is detected and the port is able to pass traffic.

Other Buttons

• ACO—Alarm Cut-off button. Pressing the ACO button on the (primary) PRE during an alarm condition shuts off the external

alarm, but does not deactivate the alarm LEDs on the PRE front panel. Alarm LEDs on the front panel are deactivated only after

the condition that caused the alarm is corrected.

• Alphanumeric Display—displays the ROMMON, IOS system status, license information, or any other debug information.

PRE Disposal

The PRE contains a small lithium battery. Some jurisdictions restrict the ways in which you can dispose items containing lithium

batteries. In particular, never dispose of lithium batteries or products containing lithium batteries in an unregulated fire. Other

restrictions may apply in your area.

Ultimate disposal of this product should be handled according to all national laws and regulations. Statement 1040.

Warning

Cabling the Cisco PRE5 Module

PRE5 Cable Holder

The Cisco PRE5 module comes with a cable holder for routing the PRE5 cables.

Figure 3: Cable Holder

Sheetmetal part of the LCD display panel of the Cisco

uBR10012 router

2PRE5 Cable holder1

The cables of PRE5 in the right slot should be routed through this cable holder, so that when the PRE5 module is installed

into the left slot, the cables of PRE5 in right slot do not come in the way.

Note

For information on installing the cable holder, see Attaching the Cisco PRE5 Module Cable Holder, on page 25.

General Safety Guidelines

When you install any component in a chassis, observe all caution and warning statements mentioned in this chapter. For warning

translations, see the regulatory compliance and safety documentation that came with this product.

The following guidelines will help ensure your safety and protect the equipment. However, these guidelines may not cover all

potentially hazardous situations you may encounter during system installation, so be alert.

• Install your product in compliance with the national and local electrical codes. In the United States, this means the National Fire

Protection Association (NFPA) 70, United States National Electrical Code. In Canada, Canadian Electrical Code, part I, CC22.1.

In other countries, International Electrotechnical Commission (IEC) 364, part 1 through part 7.

• Review the safety warnings listed in the regulatory compliance and safety documentation before installing, configuring, or

performing maintenance on the product.

• Disconnect power at the source before you install or remove a chassis.

• Do not attempt to lift an object you might find too heavy to lift safely.

• Keep the chassis area clear and as dust free as possible during and after installation.

• Keep tools and chassis components away from walk areas.

• Do not wear loose clothing, jewelry (including rings and chains), or other items that could get caught in the chassis.

• Use the product in accordance with its marked electrical ratings and product usage instructions.

Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement 1030.

Warning

Electrical Equipment Guidelines

• Before beginning any procedures requiring access to the chassis interior, locate the emergency power-off switch for the room

in which you are working.

• Disconnect all power and external cables before moving a chassis.

• Do not work alone in potentially hazardous conditions.

• Never assume that power has been disconnected from a circuit; always check.

• Do not perform any action that creates a potential hazard to people or makes the equipment unsafe.

• Carefully examine your work area for possible hazards such as moist floors, ungrounded power extension cables, and missing

safety grounds.

Preventing Electrostatic Discharge Damage

Electrostatic discharge (ESD) damage occurs when electronic cards or components are improperly handled, and can result in complete

or intermittent failures. All line cards consist of a printed circuit card that is fixed in a metal carrier. Electromagnetic interference

(EMI) shielding and connectors are integral components of the carrier. Although the metal carrier helps to protect the cards from

ESD, use an antistatic strap each time you handle the modules. Handle the carriers by the edges only; never touch the cards or connector

pins.

Always tighten the captive installation screws on all system components when you are installing them. These screws prevent

accidental removal of the module, provide proper grounding for the system, and help to ensure that the line card connectors

are properly seated in the backplane. Captive screws should be torqued to 6-8 in-lbs to ensure proper grounding and mechanical

support. Never use cordless or corded drills to tighten screws; power screwdrivers and hand tools are acceptable.

Caution

Static electricity can harm delicate components inside your system. To prevent static damage, discharge static electricity from your

body before you touch any of your system components. As you continue to work on your system, periodically touch an unpainted

metal surface on the computer chassis.

The following guidelines can prevent ESD damage:

• Always use an ESD-preventive wrist or ankle strap and ensure that it makes good skin contact. Before removing a card from

the chassis, connect the equipment end of the strap to the ESD plug at the bottom of the chassis below the power entry modules.

Ensure that the chassis or rack or both have a grounding cable installed.

• Handle line cards by the faceplate and carrier edges only; avoid touching the card components or any connector pins.

• When removing a card, place the removed module component-side-up on an antistatic surface or in a static-shielding bag. If the

module will be returned to the factory, immediately place it in a static-shielding bag.

• Avoid contact between the modules and clothing. The wrist-strap protects the card from ESD voltages on the body only; ESD

voltages on clothing can still cause damage.

• When transporting a sensitive component, first place it an antistatic container or packaging.

• Handle all sensitive components in a static-safe area. If possible, use antistatic floor pads and workbench pads.

For safety, periodically check the resistance value of the antistatic strap. The measurement should be between 1 and 10

megohms.

Caution

Before You Begin

Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement 1030.

Warning

Before you perform any of the procedures in this guide, we recommend that you:

• Read the safety guidelines and review the electrical safety and ESD-preventive guidelines provided earlier in this document.

• Ensure that the software configuration meets the minimum requirement for installation.

• Ensure that you have all the necessary tools and equipment.

• Have a terminal console available for configuring the PRE module.

• Save your configuration information on a TFTP server or the USB disks.

• Have access to the online documentation for configuring the PRE module.

Removing and Replacing the Cisco PRE5 Module

If you are upgrading from an earlier version of the PRE to PRE5, review the upgrade procedures in the Upgrading to the Cisco

PRE5 Module, on page 18 before continuing with this procedure.

Note

Equipment

You need the following tools and parts to remove and replace the PRE module. If you need additional equipment, contact a service

representative for ordering information:

• Number 2 Phillips screw driver.

• Replacement PRE module.

• ESD-prevention equipment or the disposable grounding wrist strap included with all upgrade kits, FRUs, and spares.

• Antistatic mat or surface.

When performing the following procedures, wear a grounding wrist strap to avoid electrostatic discharge (ESD) damage to

the PRE module. Some platforms have an ESD connector for attaching the wrist strap.

Caution

Unpacking the PRE Module

Before you begin

• Read the safety guidelines and review the electrical safety and ESD-preventive guidelines.

Procedure

Step 1 Ensure that you are properly grounded with an ESD-preventive ground strap.

Step 2 Open the shipping box.

Step 3 Remove the PRE module from the box and place it on an antistatic surface.

Removing a PRE Module From the Chassis

Hazardous voltage or energy is present on the backplane when the system is operating. Use caution when servicing.

Statement 1034.

Warning

Before you begin

•Removing a PRE module terminates all traffic. We recommend that you power down the router to ensure a successful installation.

• Ensure that you are properly grounded with an ESD-preventive wrist strap.

Procedure

Step 1 Save the startup configuration and running configuration to the primary PC media card, redundant PC media card, or the

TFTP server (if you are removing a PRE2 or PRE4). If you are removing a PRE5, save the startup configuration and

running configuration to the TFTP server or USB disks.

Step 2 Power off the router.

Step 3 Disconnect the cables from the PRE.

Step 4 If you are removing a PRE2 or PRE4 module, remove the PC media card or the CompactFlash Disk from the PRE. If

you are removing a PRE5, go to the next step in the procedure.

Step 5 Loosen the top and bottom captive screws on the PRE.

Figure 4: Loosening the Captive Screws on a PRE4

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