Table Of Contents
Supervisor Engine 720 SP Bootflash Memory Installation Note
Statement 1071—Warning Definition
Installing the SP Bootflash Memory Kit
Removing the Supervisor Engine 720
Installing the SP Bootflash DIMM
Reinstalling the Supervisor Engine 720
Attaching Your ESD Grounding Strap
Statement 1030—Equipment Installation
Statement 1029—Blank Faceplates and Cover Panels
Statement 1034—Backplane Voltage
Cisco Product Security Overview
Reporting Security Problems in Cisco Products
Product Alerts and Field Notices
Obtaining Technical Assistance
Definitions of Service Request Severity
Obtaining Additional Publications and Information
Supervisor Engine 720 SP Bootflash Memory Installation Note
Product Numbers: BF-S720-64MB-SP=
This publication describes how to install the switch processor (SP) bootflash memory kit. The SP bootflash memory kit contains a 64-MB bootflash DIMM that installs in the SP bootflash DIMM socket replacing the SP CompactFlash adapter.
Contents
This publication consists of these sections:
•
Installing the SP Bootflash Memory Kit
•
Cisco Product Security Overview
•
Product Alerts and Field Notices
•
Obtaining Technical Assistance
•
Obtaining Additional Publications and Information
Note
For translations of the warnings in this publication, see the "Safety Warning Translations" section.
This memory kit is applicable only for the SP bootflash; it is independent from the SP DRAM. The 64-MB Bootflash is preprogrammed with the default Cisco IOS image s72033-ipservicesk9-mz.122-18.SXF6.bin to allow you to boot up your system to the Router> prompt from the SP bootflash. Once your system is running Cisco IOS software, you can download your specific Cisco IOS image from CCO onto the new SP bootflash. After you perform a power cycle on your system or reload your system to the rmon> prompt, you can boot your system with the specific Cisco IOS image that is on the SP bootflash.
Safety Overview
Safety warnings appear throughout this publication in procedures that may harm you if performed incorrectly. A warning symbol precedes each warning statement.
Statement 1071—Warning Definition
Installing the SP Bootflash Memory Kit
The SP memory procedure is divided into the following tasks:
•
Removing the Supervisor Engine 720
•
Installing the SP Bootflash DIMM
•
Reinstalling the Supervisor Engine 720
Removing the Supervisor Engine 720
Warning
Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement 1030
The following tools are required to perform the bootflash upgrade kit installation:
•
3/16-inch flat-blade screwdriver for the captive installation screws on the supervisor engine
•
Antistatic mat or foam pad to support and protect the removed supervisor engine
•
Your own ESD-prevention equipment or the disposable grounding wrist strap included with all upgrade kits, field-replaceable units (FRUs), and spares
Warning
Blank faceplates and cover panels serve three important functions: they prevent exposure to hazardous voltages and currents inside the chassis; they contain electromagnetic interference (EMI) that might disrupt other equipment; and they direct the flow of cooling air through the chassis. Do not operate the system unless all cards, faceplates, front covers, and rear covers are in place. Statement 1029
Warning
Hazardous voltage or energy is present on the backplane when the system is operating. Use caution when servicing. Statement 1034
CautionAlways use an ESD wrist strap when handling the Supervisor Engine 720 or coming in contact with internal components.
To remove the supervisor engine, follow these steps:
Step 1
Power down your system.
Step 2
Disconnect any network interface cables attached to the supervisor engine.
Step 3
Attach an ESD grounding strap to your wrist and to ground.
Note
If you are unsure about the correct way to attach an ESD grounding strap, see the "Attaching Your ESD Grounding Strap" section for instructions.
Step 4
Verify that the captive installation screws on all of the modules in the chassis are tight.
Note
This step ensures that the space created by the removed supervisor engine is maintained. If the captive installation screws are loose, the EMI gaskets on the installed modules will push the modules toward the open slot, reducing the opening size and making it difficult to reinstall the module.
Step 5
Loosen the two captive screws on the supervisor engine that is to be removed.
Step 6
Depending on the orientation of the slots in the chassis (horizontal or vertical), perform one of the following sets of steps:
Horizontal slots
a.
Place your thumbs on the left and right ejector levers, and simultaneously rotate the levers outward to unseat the supervisor engine from the backplane connector. (See Figure 1.)
b.
Grasp the front edge of the supervisor engine, and slide the supervisor engine partially out of the slot. Place your other hand under the supervisor engine to support the weight of the module. Do not touch the module circuitry. (See Figure 2.)
Vertical slots
a.
Place your thumbs on the ejector levers located at the top and bottom of the supervisor engine, and simultaneously rotate the levers outward to unseat the supervisor engine from the backplane connector.
b.
Grasp the edges of the supervisor engine, and slide the supervisor engine straight out of the slot. Do not touch the module circuitry.
Step 7
Immediately place the supervisor engine on an antistatic mat or antistatic foam.
Figure 1 Opening the Ejector Levers (Horizontal Chassis Shown)
Figure 2 Removing the Module from the Chassis (Horizontal Chassis Shown)
Installing the SP Bootflash DIMM
To install the SP bootflash DIMM, follow these steps:
Step 1
Locate the SP bootflash DIMM socket on the Supervisor Engine 720. (See Figure 3.)
The SP bootflash DIMM is on the left side of the Supervisor Engine 720 as you face the front of the board. The RP bootflash DIMM is on the right side of the Supervisor Engine 720 as you face the front of the board.
CautionThe DIMM is a sensitive component that is susceptible to ESD damage. To prevent ESD damage, wear an ESD grounding wrist strap and handle the DIMM by the edges only; avoid touching the memory modules, pins, or traces (including the metal fingers along the connector edge of the DIMM). Attach an ESD grounding strap to your wrist and to ground. (If you are unsure about the correct way to attach an ESD grounding strap, see the "Attaching Your ESD Grounding Strap" section for instructions.)
Figure 3 SP and RP Bootflash DIMM Locations on the Supervisor Engine 720
Step 2
Release the CompactFlash adapter from the socket by simultaneously releasing the two locking spring clip tabs on either side of the DIMM socket. (See Figure 4, left view.) The CompactFlash adapter will flip up in the socket. (See Figure 4, right view.)
Step 3
Hold the CompactFlash adapter by its edges and carefully remove it from the DIMM socket.
Figure 4 Removing the SP CompactFlash Adapter
Step 4
Immediately place the CompactFlash adapter in an antistatic bag.
Step 5
Open the antistatic bag containing the replacement 64-MB bootflash DIMM.
Step 6
Carefully align the 64-MB bootflash DIMM edge connector with the DIMM socket. Slide the bootflash DIMM edge connector at an angle into the socket. (See Figure 5.)
Note
Make sure that the DIMM edge connector is fully inserted into the DIMM socket.
Step 7
Press down firmly on both edges of the bootflash DIMM until the DIMM latches into place. Visually verify that both locking spring clips are fully engaged over the edges of the DIMM. (See Figure 5.)
Figure 5 Installing the Bootflash DIMM
You are now ready to reinstall the Supervisor Engine 720 into the switch chassis.
Reinstalling the Supervisor Engine 720
CautionDuring this procedure, wear grounding wrist straps and handle modules by the carrier edges only to avoid ESD damage to the card.
To reinstall the Supervisor Engine 720 in the chassis, follow these steps:
Step 1
Attach an ESD grounding strap to your wrist and to ground.
Note
If you are unsure about the correct way to attach an ESD grounding strap, see the "Attaching Your ESD Grounding Strap" section for instructions.
Step 2
Verify that the captive installation screws are tightened on all modules installed in the chassis.
Note
This action assures that the EMI gaskets on all modules are fully compressed in order to maximize the opening space for the removed supervisor engine. If the captive installation screws are loose, the EMI gaskets on the installed modules will push adjacent modules toward the open slot, reducing the opening size and making it difficult to install the removed supervisor engine.
Step 3
Fully open both ejector levers on the supervisor engine that is being installed. (See Figure 6.)
Figure 6 Positioning the Supervisor Engine in a Horizontal Slot Chassis
Step 4
Depending on the orientation of the slots in the chassis (horizontal or vertical), perform one of the following sets of steps:
Horizontal slots
a.
Position the supervisor engine in the slot. (See Figure 6.) Make sure that you align the sides of the module carrier with the slot guides on each side of the slot.
b.
Carefully slide the supervisor engine into the slot until the EMI gasket along the top edge of the module makes contact with the module in the slot above it and both ejector levers have closed to approximately 45 degrees with respect to the module faceplate. (See Figure 7.)
c.
Using the thumb and forefinger of each hand, grasp the two ejector levers and press down to create a small 0.040 inch (1 mm) gap between the supervisor engine's EMI gasket and the module above it. (See Figure 7.)
Note
Do not press down too forcefully on the levers because they will bend and be damaged.
d.
While pressing down, simultaneously close the left and right ejector levers to fully seat the supervisor engine in the backplane connector. The ejector levers are fully closed when they are flush with the module faceplate. (See Figure 7.)
Note
Failure to fully seat the module in the backplane connector can result in error messages.
e.
Tighten the two captive installation screws on the supervisor engine.
Note
Make sure that the ejector levers are fully closed before tightening the captive installation screws.
f.
Power up your system.
g.
At the rmon> prompt, enter the boot bootflash:s72033-ipservicesk9-mz.122-18.SXF6.bin command to boot your system with the default Cisco IOS image that is on the SP bootflash. Once your system is running Cisco IOS software, you can download your specific Cisco IOS image from CCO onto the SP bootflash.
h.
Verify that the Supervisor Engine 720 STATUS LED is lit.
i.
Periodically check the STATUS LED:
•
If the STATUS LED changes from orange to green, the module has successfully completed the boot process and is now online.
•
If the STATUS LED remains orange or turns red, the supervisor engine has not successfully completed the boot process and may have encountered an error.
Note
After a successful boot process, the router (or the host name) prompt should be seen.
Figure 7 Clearing the EMI Gasket in a Horizontal Slot Chassis
Vertical slots
a.
Position the supervisor engine in the slot. (See Figure 8.) Make sure that you align the sides of the module carrier with the slot guides on the top and bottom of the slot.
b.
Carefully slide the supervisor engine into the slot until the EMI gasket along the right edge of the module makes contact with the module in the slot adjacent to it and both ejector levers have closed to approximately 45 degrees with respect to the module faceplate. (See Figure 9.)
Figure 8 Positioning the Supervisor Engine in a Vertical Slot Chassis
Figure 9 Clearing the EMI Gasket in a Vertical Slot Chassis
c.
Using the thumb and forefinger of each hand, grasp the two ejector levers and exert a slight pressure to the left, deflecting supervisor engine approximately 0.040 inches (1 mm) creating a small gap between the supervisor engine's EMI gasket and the module adjacent to it. (See Figure 9.)
Note
Do not exert too much pressure on the ejector levers because they will bend and be damaged.
d.
While pressing down on the ejector levers, simultaneously close the levers to fully seat the supervisor engine in the backplane connector. The ejector levers are fully closed when they are flush with the module faceplate.
e.
Tighten the two captive installation screws on the supervisor engine.
Note
Make sure that the ejector levers are fully closed before tightening the captive installation screws.
f.
Power up your system.
g.
At the rmon> prompt, enter the boot bootflash:s72033-ipservicesk9-mz.122-18.SXF6.bin command to boot your system with the default Cisco IOS image that is on the SP bootflash. Once your system is running Cisco IOS software, you can download your specific Cisco IOS image from CCO onto the SP bootflash.
h.
Verify that the Supervisor Engine 720 STATUS LED is lit.
i.
Periodically check the STATUS LED:
•
If the STATUS LED changes from orange to green, the module has successfully completed the boot process and is now online.
•
If the STATUS LED remains orange or turns red, the supervisor engine has not successfully completed the boot process and may have encountered an error.
Note
After a successful boot process, the router (or the host name) prompt should be seen.
Attaching Your ESD Grounding Strap
Electrostatic discharge (ESD) damage, which can occur when modules or other FRUs are improperly handled, results in intermittent or complete failures. Modules consist of printed circuit boards that are fixed in metal carriers. Electromagnetic interference (EMI) shielding and connectors are integral components of the carrier. Although the metal carrier helps to protect the board from ESD, always use an ESD grounding strap when handling modules.
To prevent ESD damage, follow these guidelines:
•
Always use an ESD wrist strap and ensure that it makes maximum contact with bare skin. ESD grounding straps are available with banana plugs, metal spring clips, or alligator clips. All Catalyst 6500 series chassis are equipped with a banana plug connector (identified by the ground symbol next to the connector) on the front panel. If you have an older Catalyst 6500 series chassis equipped with a plastic banana plug connector, we recommend that you use either the supplied ESD grounding wrist strap (with a metal clip) or an ESD grounding wrist strap equipped with an alligator clip. If you have a newer Catalyst 6500 series chassis that has a bare metal hole as the banana plug connector (also identified by the ground symbol next to the connector), we recommend that you use a personal ESD grounding strap equipped with a banana plug.
•
If you choose to use the disposable ESD wrist strap supplied with most FRUs or an ESD wrist strap equipped with an alligator clip, you must attach the system ground lug to the chassis in order to provide a proper grounding point for the ESD wrist strap.
Note
This system ground is also referred to as the network equipment building system (NEBS) ground.
•
If your chassis does not have the system ground attached, you must install the system ground lug. Refer to the online Catalyst 6500 Series Switches Installation Guide or the Cisco 7600 Series Router Installation Guide for the procedure.
Note
You do not need to attach a supplemental system ground wire to the system ground lug; the lug provides a direct path to the bare metal of the chassis.
After you install the system ground lug, you can perform the procedure in this section.
To attach the ESD wrist strap, follow these steps:
Step 1
Attach the ESD wrist strap to bare skin as follows:
a.
If you are using the ESD wrist strap supplied with the FRUs, open the wrist strap package and unwrap the ESD wrist strap. Place the black conductive loop over your wrist and tighten the strap so that it makes good contact with your bare skin.
b.
If you are using an ESD wrist strap equipped with an alligator clip, open the package and remove the ESD wrist strap. Locate the end of the wrist strap that attaches to your body and secure it to your bare skin.
Step 2
Grasp the spring or alligator clip on the ESD wrist strap and momentarily touch the clip to a bare metal spot (unpainted surface) on the rack.
We recommend that you touch the clip to an unpainted rack rail so that any built-up static charge is then safely dissipated to the entire rack.
Step 3
Attach either the spring clip or the alligator clip to the ground lug screw as follows (see Figure 10):
a.
If you are using the ESD wrist strap that is supplied with the FRUs, squeeze the spring clip jaws open, position the spring clip to one side of the system ground lug screw head, and slide the spring clip over the lug screw head so that the spring clip jaws close behind the lug screw head.
Note
The spring clip jaws do not open wide enough to fit directly over the head of the lug screw or the lug barrel.
b.
If you are using an ESD wrist strap that is equipped with an alligator clip, attach the alligator clip directly over the head of the system ground lug screw or to the system ground lug barrel.
Figure 10 Attaching the ESD Wrist Strap Clip to the System Ground Lug Screw
CautionFor safety, periodically check the resistance value of the antistatic strap. The measurement should be between 1 and 10 megohm (Mohm).
Module Handling Guidelines
When handling modules, follow these guidelines:
•
Handle carriers by available handles or edges only; avoid touching the printed circuit boards or connectors.
•
Place a removed component board-side-up on an antistatic surface or in a static-shielding container. If you plan to return the component to the factory, immediately place it in a static-shielding container.
•
Never attempt to remove the printed circuit board from the metal carrier.
Safety Warning Translations
This section repeats in multiple languages the basic warnings that appear in this publication.
Statement 1030—Equipment Installation
Statement 1029—Blank Faceplates and Cover Panels
Statement 1034—Backplane Voltage
Obtaining Documentation
Cisco documentation and additional literature are available on Cisco.com. This section explains the product documentation resources that Cisco offers.
Cisco.com
You can access the most current Cisco documentation at this URL:
http://www.cisco.com/techsupport
You can access the Cisco website at this URL:
You can access international Cisco websites at this URL:
http://www.cisco.com/public/countries_languages.shtml
Product Documentation DVD
The Product Documentation DVD is a library of technical product documentation on a portable medium. The DVD enables you to access installation, configuration, and command guides for Cisco hardware and software products. With the DVD, you have access to the HTML documentation and some of the PDF files found on the Cisco website at this URL:
http://www.cisco.com/univercd/home/home.htm
The Product Documentation DVD is created and released regularly. DVDs are available singly or by subscription. Registered Cisco.com users can order a Product Documentation DVD (product number DOC-DOCDVD= or DOC-DOCDVD=SUB) from Cisco Marketplace at the Product Documentation Store at this URL:
http://www.cisco.com/go/marketplace/docstore
Ordering Documentation
You must be a registered Cisco.com user to access Cisco Marketplace. Registered users may order Cisco documentation at the Product Documentation Store at this URL:
http://www.cisco.com/go/marketplace/docstore
If you do not have a user ID or password, you can register at this URL:
http://tools.cisco.com/RPF/register/register.do
Documentation Feedback
You can provide feedback about Cisco technical documentation on the Cisco Support site area by entering your comments in the feedback form available in every online document.
Cisco Product Security Overview
Cisco provides a free online Security Vulnerability Policy portal at this URL:
http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html
From this site, you will find information about how to do the following:
•
Report security vulnerabilities in Cisco products
•
Obtain assistance with security incidents that involve Cisco products
•
Register to receive security information from Cisco
A current list of security advisories, security notices, and security responses for Cisco products is available at this URL:
To see security advisories, security notices, and security responses as they are updated in real time, you can subscribe to the Product Security Incident Response Team Really Simple Syndication (PSIRT RSS) feed. Information about how to subscribe to the PSIRT RSS feed is found at this URL:
http://www.cisco.com/en/US/products/products_psirt_rss_feed.html
Reporting Security Problems in Cisco Products
Cisco is committed to delivering secure products. We test our products internally before we release them, and we strive to correct all vulnerabilities quickly. If you think that you have identified a vulnerability in a Cisco product, contact PSIRT:
•
For emergencies only — security-alert@cisco.com
An emergency is either a condition in which a system is under active attack or a condition for which a severe and urgent security vulnerability should be reported. All other conditions are considered nonemergencies.
•
For nonemergencies — psirt@cisco.com
In an emergency, you can also reach PSIRT by telephone:
•
1 877 228-7302
•
1 408 525-6532
Tip
We encourage you to use Pretty Good Privacy (PGP) or a compatible product (for example, GnuPG) to encrypt any sensitive information that you send to Cisco. PSIRT can work with information that has been encrypted with PGP versions 2.x through 9.x.
Never use a revoked encryption key or an expired encryption key. The correct public key to use in your correspondence with PSIRT is the one linked in the Contact Summary section of the Security Vulnerability Policy page at this URL:
http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html
The link on this page has the current PGP key ID in use.
If you do not have or use PGP, contact PSIRT to find other means of encrypting the data before sending any sensitive material.
Product Alerts and Field Notices
Modifications to or updates about Cisco products are announced in Cisco Product Alerts and Cisco Field Notices. You can receive these announcements by using the Product Alert Tool on Cisco.com. This tool enables you to create a profile and choose those products for which you want to receive information.
To access the Product Alert Tool, you must be a registered Cisco.com user. Registered users can access the tool at this URL:
http://tools.cisco.com/Support/PAT/do/ViewMyProfiles.do?local=en
To register as a Cisco.com user, go to this URL:
http://tools.cisco.com/RPF/register/register.do
Obtaining Technical Assistance
Cisco Technical Support provides 24-hour-a-day award-winning technical assistance. The Cisco Support website on Cisco.com features extensive online support resources. In addition, if you have a valid Cisco service contract, Cisco Technical Assistance Center (TAC) engineers provide telephone support. If you do not have a valid Cisco service contract, contact your reseller.
Cisco Support Website
The Cisco Support website provides online documents and tools for troubleshooting and resolving technical issues with Cisco products and technologies. The website is available 24 hours a day at this URL:
http://www.cisco.com/en/US/support/index.html
Access to all tools on the Cisco Support website requires a Cisco.com user ID and password. If you have a valid service contract but do not have a user ID or password, you can register at this URL:
http://tools.cisco.com/RPF/register/register.do
Note
Before you submit a request for service online or by phone, use the Cisco Product Identification Tool to locate your product serial number. You can access this tool from the Cisco Support website by clicking the Get Tools & Resources link, clicking the All Tools (A-Z) tab, and then choosing Cisco Product Identification Tool from the alphabetical list. This tool offers three search options: by product ID or model name; by tree view; or, for certain products, by copying and pasting show command output. Search results show an illustration of your product with the serial number label location highlighted. Locate the serial number label on your product and record the information before placing a service call.
Tip
Displaying and Searching on Cisco.com
If you suspect that the browser is not refreshing a web page, force the browser to update the web page by holding down the Ctrl key while pressing F5.
To find technical information, narrow your search to look in technical documentation, not the entire Cisco.com website. After using the Search box on the Cisco.com home page, click the Advanced Search link next to the Search box on the resulting page and then click the Technical Support & Documentation radio button.
To provide feedback about the Cisco.com website or a particular technical document, click Contacts & Feedback at the top of any Cisco.com web page.
Submitting a Service Request
Using the online TAC Service Request Tool is the fastest way to open S3 and S4 service requests. (S3 and S4 service requests are those in which your network is minimally impaired or for which you require product information.) After you describe your situation, the TAC Service Request Tool provides recommended solutions. If your issue is not resolved using the recommended resources, your service request is assigned to a Cisco engineer. The TAC Service Request Tool is located at this URL:
http://www.cisco.com/techsupport/servicerequest
For S1 or S2 service requests, or if you do not have Internet access, contact the Cisco TAC by telephone. (S1 or S2 service requests are those in which your production network is down or severely degraded.) Cisco engineers are assigned immediately to S1 and S2 service requests to help keep your business operations running smoothly.
To open a service request by telephone, use one of the following numbers:
Asia-Pacific: +61 2 8446 7411
Australia: 1 800 805 227
EMEA: +32 2 704 55 55
USA: 1 800 553 2447For a complete list of Cisco TAC contacts, go to this URL:
http://www.cisco.com/techsupport/contacts
Definitions of Service Request Severity
To ensure that all service requests are reported in a standard format, Cisco has established severity definitions.
Severity 1 (S1)—An existing network is "down" or there is a critical impact to your business operations. You and Cisco will commit all necessary resources around the clock to resolve the situation.
Severity 2 (S2)—Operation of an existing network is severely degraded, or significant aspects of your business operations are negatively affected by inadequate performance of Cisco products. You and Cisco will commit full-time resources during normal business hours to resolve the situation.
Severity 3 (S3)—Operational performance of the network is impaired while most business operations remain functional. You and Cisco will commit resources during normal business hours to restore service to satisfactory levels.
Severity 4 (S4)—You require information or assistance with Cisco product capabilities, installation, or configuration. There is little or no effect on your business operations.
Obtaining Additional Publications and Information
Information about Cisco products, technologies, and network solutions is available from various online and printed sources.
•
The Cisco Online Subscription Center is the website where you can sign up for a variety of Cisco e-mail newsletters and other communications. Create a profile and then select the subscriptions that you would like to receive. To visit the Cisco Online Subscription Center, go to this URL:
http://www.cisco.com/offer/subscribe
•
The Cisco Product Quick Reference Guide is a handy, compact reference tool that includes brief product overviews, key features, sample part numbers, and abbreviated technical specifications for many Cisco products that are sold through channel partners. It is updated twice a year and includes the latest Cisco channel product offerings. To order and find out more about the Cisco Product Quick Reference Guide, go to this URL:
•
Cisco Marketplace provides a variety of Cisco books, reference guides, documentation, and logo merchandise. Visit Cisco Marketplace, the company store, at this URL:
http://www.cisco.com/go/marketplace/
•
Cisco Press publishes a wide range of general networking, training, and certification titles. Both new and experienced users will benefit from these publications. For current Cisco Press titles and other information, go to Cisco Press at this URL:
•
Internet Protocol Journal is s a quarterly journal published by Cisco for engineering professionals involved in designing, developing, and operating public and private internets and intranets. You can access the Internet Protocol Journal at this URL:
•
Networking products offered by Cisco, as well as customer support services, can be obtained at this URL:
http://www.cisco.com/en/US/products/index.html
•
Networking Professionals Connection is an interactive website where networking professionals share questions, suggestions, and information about networking products and technologies with Cisco experts and other networking professionals. Join a discussion at this URL:
http://www.cisco.com/discuss/networking
•
"What's New in Cisco Documentation" is an online publication that provides information about the latest documentation releases for Cisco products. Updated monthly, this online publication is organized by product category to direct you quickly to the documentation for your products. You can view the latest release of "What's New in Cisco Documentation" at this URL:
http://www.cisco.com/univercd/cc/td/doc/abtunicd/136957.htm
•
World-class networking training is available from Cisco. You can view current offerings at this URL:
http://www.cisco.com/en/US/learning/index.html
This document is to be used in conjunction with the Cisco IOS Software Configuration Guide.
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