Cisco Performance Routing Engine 5 Manual

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
2

• 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.
3

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
4

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.
5

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.
6

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.
7

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.
8

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.
9

• 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
10

Step 6 Simultaneously pivot both ejector levers away from each other to disengage the PRE from the backplane.
Figure 5: Opening the Ejector Levers of a PRE5
Step 7 Slide the PRE out of the slot and place it on an antistatic surface or in an antistatic bag.
11

Figure 6: Removing the PRE5 From the Chassis
Step 8 If you are installing a replacement PRE, proceed to the Installing the Cisco PRE5 Module in the Chassis, on page 13
section. Otherwise, install a blank PRE cover over the slot and screw down the captive screws to complete this procedure.
12

Installing the Cisco PRE5 Module in the Chassis
Before you begin
• Ensure that you are properly grounded with an ESD-preventive wrist strap.
• Inspect the connectors for any bent or broken pins. Bent or broken pins can cause a system malfunction.
Procedure
Step 1 Ensure that the ejector levers on the PRE5 are at the fully-open position.
Figure 7: PRE5 At The Fully-Open Position
Step 2 Grasp the faceplate of the new PRE with one hand and place your other hand under the module (to support the weight of
the module) and position the module in front of the card slot.
13

Figure 8: Positioning the PRE5 in the Chassis Slot
Step 3 Use your hand to hold the ejector levers and exert a little force in the up and down direction to keep the ejector levers at
the fully-open position. Then carefully align the upper and lower edges of the PRE with the upper and lower guides in
the slot.
14

Figure 9: Keeping the Ejector Levers Open
Step 4 Slide the PRE5 module into the slot slowly until the ends of both ejector levers touch the front panel surface of the chassis.
15

Figure 10: Sliding the PRE5 Until it Touches the Chassis Front Panel
Step 5 Simultaneously pivot both ejector levers toward each other (until they are parallel to the faceplate) to firmly seat the PRE
in the backplane.
16

Figure 11: Closing the Ejector Levers
Step 6 Using a Number 2 Phillips screwdriver, secure the PRE in the chassis by tightening the top and bottom captive screws.
Always tighten the captive screws on each newly-installed PRE to prevent accidental removal and provide
proper grounding for electromagnetic interference (EMI) shielding.
Caution
Step 7 When fully inserted, the PRE cycles through its power-on self-test. The FAIL LED comes on briefly (about 5 to 6 seconds)
and then goes off. If the FAIL LED remains on or is flashing, go to the Troubleshooting the Cisco PRE5 Module Installation,
on page 26 section.
Step 8 Reconnect the cables.
For information about configuring the PRE, see the Cisco uBR10012 Universal Broadband Router Software Configuration
Guide.
17

It is not necessary to reconfigure the PRE if you are installing or replacing the redundant PRE. The system
downloads the necessary configuration information from the primary PRE when you set the configuration to
boot the full image and reload.
Caution
Upgrading to the Cisco PRE5 Module
Prerequisites
• To ensure that all the software features supported by your current PRE image function correctly, they must be supported by the
PRE5 image. Check with your Cisco technical support representative to verify the correct upgrade path before initiating the
upgrade.
• The upgrade should be performed by a qualified engineer. This person must be familiar with the Cisco router console interface
and be able to perform basic router operations, such as configuration loading and router reload functions.
See the Installing EMI Gaskets and RF Absorber Material on the Cisco uBR10012 Universal Broadband Router document
before proceeding. Ensure that the EMI gaskets and RF absorber material are installed in the Cisco uBR10012 chassis.
Important
Installing the Foam Gaskets for PRE5
Foam gaskets should be installed on the LCD display panel of the Cisco uBR10012 router to meet the EMI requirements.
1. Loosen the four screws on the LCD display panel and remove it from the chassis.
Place the LCD display panel on an antistatic mat.
Note
2. Peel the adhesive backing off the gaskets.
3. First align the foam gasket 1 (51-6582-01) 0.180 inches from the edge of the chassis. Then, align and stick the foam gasket 1
(51-6582-01) along the bottom surface of the base part of LCD display panel
18

Figure 12: Installing the Foam Gaskets for PRE5
Bottom surface of the base part of the LCD display
panel
3Foam gaskets (51-6582-01)1
—Foam gaskets (51-6581-01)2
Ensure that you use the gaskets in strict accordance to the procedure mentioned here.
Note
4. Stick the other foam gaskets on the surfaces of the base part of the LCD display panel.
5. Reinstall the LCD display panel by tightening the four screws on the LCD display panel.
Upgrade Considerations
• This is a service-impacting hardware upgrade. The router will not be available for user traffic during the upgrade, and traffic
cannot resume until the upgrade is complete.
• The new PRE image must exist on the TFTP server.
• The same type of PRE should be used for both, primary and secondary PREs. PREs can operate with the same PRE type only.
19

• The PRE5 module must have the helper image (eboot) stored in the bootflash (bootflash0:), must have no configuration, and
must be set to boot into ROMMON mode. Individual PRE5 modules ship in this state.
• When upgrading from a PRE2 or a PRE4, copy your startup configuration and running configuration to the external USB disks
(disk1: or disk2:) of the PRE5 module.
If you have redundant PREs installed in the Cisco uBR10012 chassis, and you intend to save the startup configuration, the
running configuration, and the new PRE5 image, be sure to save them to the external USB disks on both the primary and the
redundant PRE.
Note
Saving the Startup and Running Configuration Information
When a PRE is removed from the chassis, any local configuration is lost. You must save your configuration information to the TFTP
server or the USB disks before removing the module.
Saving the Startup and Running Configuration Information to the TFTP Server
Procedure
Step 1 Connect to the primary PRE console from a terminal.
Step 2 Save the startup configuration and running configuration to the TFTP server or USB disks.
copy startup-config tftp://x.x.x.x/xxx.cfg
copy running-config tftp://x.x.x.x/xxx.cfg
copy startup-config disk1:xxx.cfg
copy running-config disk1:xxx.cfg
Upgrading the Primary PRE to a Cisco PRE5 Module
Procedure
Step 1 Connect a terminal to the primary PRE.
Step 2 If you have not already done so, save the startup configuration and running configuration to a location on a TFTP server.
For more information, see the Saving the Startup and Running Configuration Information to the TFTP Server, on page
20.
When the PRE is removed from the chassis, any local configuration is lost. You must save your configuration
before removing the PRE.
Caution
Step 3 Power down the router. All traffic on the router is terminated.
PREs can be hot-swapped. However, removing a PRE terminates all traffic, therefore we recommend that you
power down the router to ensure a successful installation.
Note
20