Cisco SSP Series Bedienungs- und Wartungsanleitung

Doc. No.

Cisco Systems, Inc.

Silicon Switch Processor (SSP)

Installation and Conﬁguration

78-1209-05

Product Numbers: SSP=, UPG-SSP, SSP-2MB=, UPG-SSP-2MB,

and UPG-SSP-.5to2MB

This publication contains instructions for installing the Silicon Switch Processor (SSP) and

upgrading the software in Cisco 7000 series routers: the Cisco 7000 and the Cisco 7010.

The sections of this publication include the following:

•SSP Description, page 2

•Prerequisites, page 6

•Software Upgrade Prerequisites, page 8

•Software Upgrade Overview, page 9

•Establishing a Telnet Session, page 9

•Loading the System Software, page 10

•Enabling SSE Switching, page 13

•Additional Show Commands, page 14

•Installing the SSP, page 15

Following are the SSP-related product numbers:

•SSP= is a spare SSP.

•UPG-SSP is the SP-to-SSP upgrade.

•SSP-2MB= is a spare 2-megabyte (MB) SSP.

•UPG-SSP-2MB is the SP to 2-MB SSP upgrade.

•UPG-SSP-.5to2MB is the 512 kilobyte (KB) to 2-MB SSP upgrade.

2Silicon Switch Processor (SSP) Installation and Conﬁguration

SSP Description

The SSP is the high-performance silicon switch for Cisco 7000 series routers. There are two

hardware versions of the SSP: one with 512 KB of packet memory and another with 2 MB of packet

memory, for installations requiring increased memory capacity.

Note The SSP with 2 MB of packet memory did not support the Asynchronous Transfer Mode

interface processor (AIP) in Cisco Internetwork Operating System (Cisco IOS) software releases

prior to 10.0(11), 10.2(8), 10.3(5), and 11.0(1). The SSP with 2 MB of packet memory supports the

AIP in Cisco IOS software releases 10.0(11), 10.2(8), 10.3(5), and 11.0(1), as well as all subsequent

releases of the Cisco IOS software.

For speciﬁc software requirements for each SSP conﬁguration, refer to the section “Software

Upgrade Prerequisites” on page 8.

The SSP and the Route Processor (RP), which contains the system processor, provide distributed

processing and control for the interface processors. Network interfaces reside on the modular

interface processors that provide a direct connection between the high-speed, 533-Mbps

Cisco Extended Bus (CxBus) and the external networks. The SSP, shown in Figure 1, communicates

with and controls the interface processors on the high-speed CxBus. The SSP determines the

destination of a packet and switches the packet, based on that decision. The SSP is always installed

in the backplane SP slot adjacent to the RP. (See Figure 2 and Figure 3.) A few seconds after bootup,

the LED labeled Enabled goes on to indicate that the SSP is enabled for operation. One SSP (or SP)

is required in each Cisco 7000 series router.

Figure 1 Silicon Switch Processor (SSP)

Cisco 7000 Series Overview

The Cisco 7000 Series comprises the ﬁve-slot Cisco 7010 and the seven-slot Cisco 7000. Both

models use the same Route Processor (RP), Silicon Switch Processor (SSP), and interface

processors. The Cisco 7000 provides ﬁve interface slots and offers a second modular power supply

for redundant power. The Cisco 7010 provides three interface slots, and offers the same performance

as the Cisco 7000.

Figure 2 shows the interface processor end of the Cisco 7000 model, which provides access to the

seven processor slots and the removable power supplies. When facing the interface processor end of

the chassis, the RP and SP slot are on the far right. The ﬁve interface processor slots are numbered

0 to 4 from left to right. In both models, interface processor slots support any combination of

network interface types: Ethernet, Token Ring, ﬁber distributed data interface (FDDI), serial, and

high-speed serial interface (HSSI). The RP, SP, and interface processors are keyed with guides on

the backplane to prevent them from being fully inserted in the wrong slot. The SSP (or SP), RP, and

H2338

Enabled

U231

Enabled LED

Silicon Switch Processor (SSP) Installation and Configuration 3

Cisco 7000 Series Overview

interface processors slide into slots in the rear of the chassis and connect directly to the backplane.

The backplane slots are keyed so that the SSP or SP, RP, and interface processors are installable only

in the slots designated for them. The SSP inserts into the slot formerly reserved for the SP.

Figure 2 Cisco 7000—Interface Processor End

Figure 3 shows the interface processor end of the Cisco 7010 model, which provides access to the

ﬁve processor slots, the AC input receptacle, the power switch, and a power status indicator. When

facing the interface processor end of the chassis, the RP and SP slots are at the top. The three

interface processor slots are numbered from the bottom up beginning with slot 0 (the bottom slot)

through slot 2 (the center slot).

H2358

Slot 0 123 4 SP

SSP

slot

Upper

power supply

Lower

power supply

DC FAIL

AC POWER

DC FAIL

AC POWER

Captive

installation screw

Captive

installation screw

4Silicon Switch Processor (SSP) Installation and Conﬁguration

Cisco 7000 Series Overview

Figure 3 Cisco 7010—Interface Processor End

Figure 4 shows the ejector levers and captive installation screws on a typical interface processor. To

remove an interface processor, loosen the captive screws and pull theejector levers to the sides; then

pull the module out using the handle. To insert an interface processor, reverse the process, making

sure to ﬁrmly seat the interface processor in its connectors on the backplane. For detailed directions,

follow the procedures in “Removing the SP or SSP” and “Replacing an SSP in the Chassis.”

Caution Always use the ejector levers to remove or install the SSP. The ejectors help ensure that

backplane connectors on the card are fully seated in, or fully ejected from, the backplane. Failure to

use the ejector levers could result in a partial backplane connection, which can hang the system.

The captive installation screws on the ends (see Figure 4) of each faceplate, when tightened, provide

electromagnetic interference (EMI) shielding and also help ensure proper seating in the backplane.

After using the ejector levers to install an SSP, tighten the captive installation screws to prevent the

SSP from becoming partially dislodged from the backplane. These screws must be tightened to meet

EMI speciﬁcations.

H2359

RP slot

SP or SSP slot

Interface processor slot 1

DC OK LED

Power switch

Chassis ground

screw

Power receptacle

Interface processor slot 2

Interface processor slot 0

AC-input power supply

Silicon Switch Processor (SSP) Installation and Configuration 5

Cisco 7000 Series Overview

Figure 4 Ejector Levers and Captive Installation Screws—Horizontal Orientation Shown

Interface processor

card slot

Interface processor card

carrier guide (black)

Ejector

lever

Captive

installation

screw

H1984

6Silicon Switch Processor (SSP) Installation and Conﬁguration

Prerequisites

Prerequisites Before you begin the installation of the SSP, review the tools and parts required, and the safety and

ESD-prevention guidelines in this section.

Tools and Parts Required

You need some or all of the following tools and parts to perform the following procedures. Before

you begin, read the entire procedure to determine which tools you need for the installation or

upgrade you will perform.

•A number 1 Phillips or 1/4-inch ﬂat-blade screwdriver for the captive installation screws that

secure the SSP in its slot. (Because of ongoing product improvements, some power supplies use

slotted screws, and others use Phillips head screws.)

•ESD-prevention equipment or the disposable grounding wrist strap included with all upgrade

kits.

•Antistatic mat, foam pad, or bag for the removed SSP, or Switch Processor (SP) if you are making

an upgrade to an SSP. (Immediately place the removed SSP or SP into an antistatic bag if

returning the SSP to the factory.)

Safety Follow these basic guidelines when working with any electrical equipment:

•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 if potentially hazardous conditions exist.

•Never assume that power is 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.

In addition, use the guidelines that follow when working with any equipment that is connected to

telephone wiring or other network cabling.

•Never install telephone wiring during a lightning storm.

•Never install telephone jacks in wet locations unless the jack is speciﬁcally designed for

wet locations.

•Never touch uninsulated telephone wires or terminals unless the telephone line is been

disconnected at the network interface.

•Use caution when installing or modifying telephone lines.

Silicon Switch Processor (SSP) Installation and Configuration 7

Prerequisites

Preventing Electrostatic Discharge (ESD) Damage

Electrostatic discharge (ESD) damage, which can occur when electronic cards or components are

improperly handled, results in complete or intermittent failures. The SSP comprises a printed circuit

board that is ﬁxed in a metal carrier. Electromagnetic interference (EMI) shielding, connectors, and

a handle are integral components of the carrier. Although the metal carrier helps to protect the board

from ESD, use a preventive antistatic strap whenever handling the SSP. Handle the carriers by the

handles and the carrier edges only; never touch the boards or connector pins.

Caution Always tighten the captive installation screws on the SSP. (See Figure 4.) These screws

prevent accidental removal, provide proper grounding for the system, and help to ensure that the

bus connectors are properly seated in the backplane.

Following are guidelines for preventing ESD damage:

•Always use an ESD wrist strap or ankle strap and ensure that the wrist strap makes good skin

contact.

•Connect the equipment end of the strap to a captive installation screw on an installed power

supply.

•When installing an SSP, use the ejector levers to properly seat the bus connectors in the

backplane, then tighten both (top and bottom) captive installation screws. (See Figure 4.) These

screws prevent accidental removal, provide proper grounding for the system, and help to ensure

that the bus connectors are seated in the backplane.

•When removing an SSP, use the ejectors to release the bus connectors from the backplane. Hold

the handle on the front of the SSP with one hand and support the bottom edge of the metal carrier

with the other hand. Pull the SSP out slowly, using your hand along the bottom of the carrier to

guide the SSP straight out of the slot.

•Handle carriers by the handles and carrier edges only; avoid touching the board or any connector

pins.

•Place a removed SSP component-side-up on an antistatic surface or in a static shielding bag. If

the SSP is to be returned to the factory, immediately place the SSP in a static shielding bag.

•Avoid contact between the SSP and clothing. The wrist strap only protects the card from ESD

voltages on the body; ESD voltages on clothing can still cause damage.

Warning For safety, periodically check the resistance value of the antistatic wrist strap. The

measurement should be within the range of 1 and 10 megohms.

8Silicon Switch Processor (SSP) Installation and Conﬁguration

Software Upgrade Prerequisites

Following are minimum system requirements for the SSP hardware types:

•The SSP with 512 KB of packet memory requires Cisco Internetwork Operating System

(Cisco IOS) Release 10.0, or later.

•The SSP with 2 MB of packet memory requires Cisco IOS Release 10.0(11) or later. Cisco IOS

Releases 10.2(7) or later, 10.3(4) or later, and 11.0(1) or later, will provide the best use of the

2-MB SSP. (Detailed procedures for upgrading your Cisco 7000 series router software are

provided separately with the software upgrade.)

To successfully upgrade the system software and microcode, you must have the following:

•Internet Protocol (IP) connections to the devices you plan to upgrade on the network.

•Write to Flash memory enabled. Your router was shipped with write to Flash memory enabled.

Flash must be enabled on the router to make a write to Flash operation possible. If you removed

the jumper from J2, the system makes a write operation impossible. For write enable, set the

jumper on the RP hardware conﬁguration register on J2. (See Figure 5.)

Figure 5 RP Flash Write-Protection Jumper

•You must have a terminal connection that enables you to issue commands to each router that you

upgrade. If you do not have a direct terminal connection, you must set up a Telnet session on a

device attached to the router you upgrade.

—If you are using TCP/IP software that permits concurrent Telnet and TFTP server

connections, your terminal connection and TFTP session can be from the same PC.

—If you are using TCP/IP software that permits only the TFTP server to run, you need two

machines. Set up one for your terminal connection and the other for your TFTP server.

•ATFTPﬁleservermustbeactiveandaccessibletotherouter. You must copythesystemsoftware

into the TFTP server directory (or wherever the TFTP server expects to ﬁnd the system software

ﬁle) to download the software to the router.

Configuration

J2, Flash

write-protection jumper

H1986

Bit 0

Silicon Switch Processor (SSP) Installation and Configuration 9

Software Upgrade Overview

This section describes the general steps required to upgrade your system software on a

Cisco 7000 series router. The sections that follow describe these steps in detail.

Step 1 Install the appropriate system software onto your TFTP server in the TFTP directory.

Step 2 Verify that the router you are upgrading can connect to the TFTP server. Ping from the

router to the TFTP server.

Step 3 If the TFTP server is not already active, start the TFTP server.

Step 4 If you do not have a console port connection to the router you are upgrading, establish a

Telnet session with the router.

Step 5 Back up the existing working system software and microcode images currently in Flash

memory by copying the ﬁles to the TFTP server.

Step 6 Back up your current conﬁguration ﬁle to your TFTP server.

Step 7 Copy the system software image from the TFTP server into Flash memory using the

copy tftp ﬂash command.

Step 8 Ensure that the checksum listed on the bottom line of the output for the copy tftp ﬂash

command matches the checksum listed in the README ﬁle on the upgrade disk, as in the

following:

(text deleted)

Verifying via checksum...

Flash verification successful. Length = 1906676, checksum = 0x12AD

If the checksum in the screen output does not match the checksum in the README ﬁle,

invoke the copy tftp ﬂash command again before booting from Flash memory.

Step 9 Make sure your system is conﬁgured to boot from the new image in Flash memory.

Step 10 Boot the router from Flash. This process reads the image from Flash memory and writes

the image into system RAM.

Step 11 Check all network connections to make sure the router with the upgraded system software

is up and functioning properly.

Establishing a Telnet Session

You must be able to issue commands to the router on which you are upgrading the software. For

example, this publication tells you to issue a command to download the image from the TFTP server

to the router.

If you have a console port connection to the router, you need not invoke a Telnet session. If you do

not have a console port connection to the router, you must establish a Telnet session with the router

so that you can issue the router commands.

You can set up a Telnet session from a Sun workstation or from a PC.

•If you are using a Sun workstation as a TFTP server, you can also establish a Telnet session from

the workstation to the router, in addition to the TFTP session.

•If you are running TCP/IP software on a PC, check to see if the software is character-based or

Windows-based.

—If character-based, you need a second PC from which you can establish a Telnet session.

—If Windows-based, you can open one window for the TFTP session and one window for the

Telnet session.

10 Silicon Switch Processor (SSP) Installation and Conﬁguration

Loading the System Software

This section presents the following topics:

•Backing up your current system software image (including learning the existing system software

image name and copying the image from Flash memory to the TFTP server)

•Copying the image from a TFTP server to Flash memory

•Verifying the new image in Flash memory

Note The SSP with 2 MB of packet memory requires Cisco IOS Release 10.0(11) or later.

Cisco IOS Releases 10.2(7) or later, 10.3(4) or later, and 11.0(1) or later, will provide the best use

of the 2-MB SSP.

Backing Up Your Current System Software and Conﬁguration File

If you do not already have the current system software image and backup conﬁguration ﬁle on your

TFTP server, make sure you back up these ﬁles before copying the new system software image to

Flash memory on your router.

Learning the System Image Name

To display the total amount of Flash memory present, its location, any ﬁles that currently exist in

Flash memory and their size, and the amount of Flash memory remaining, use the show ﬂash

command. The following (typical) output displays:

Router> show flash

4096K bytes of flash memory sized on embedded flash.

File name/status

0 gs7-k.103-1

1 micro/ssp10-5

[246400/4194304 bytes free/total]

Use the ﬁle name near the bottom of the show ﬂash command screen output (in this

case gs7-k.10-1) when you back up the image.

Backing up the Current System Image

Copy the image from Flash memory to a TFTP server using the copy ﬂash tftp command:

Router# copy flash tftp

The router prompts you for the IP address of the TFTP server and the name of the image ﬁle you are

copying to the server.

A sample of the output for this command using IP address 1.1.1.11 and ﬁlename gs7-k.103-1

follows:

IP address of remote host [255.255.255.255]? 1.1.1.11

Name of file to copy []? gs7-k.103-1

writing gs7-k.103-1 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Router#

Use the image you backed up to the TFTP server if the upgrade image is damaged.

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