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Cisco 12000 Series Routers

Converting an AC-Powered Cisco 12404 Router to DC Power

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Converting an AC-Powered Cisco 12404 Router to DC Power

Table Of Contents

Converting an AC-Powered Cisco 12404 Router to DC Power

Overview

AC Configuration

DC Configuration

Converting the Router to DC Power

Tools and Equipment

Powering Off the AC Powered Router

Removing an AC PEM

Installing a DC PDU and DC PEM

Checking the DC PDU and DC PEM Installation

Converting the Router to AC Power

Powering Off the DC Powered Router

Removing a DC PDU and DC PEM

Installing an AC PEM

Checking the AC PEM Installation

Regulatory, Compliance, and Safety Information

Translated Safety Warnings and Agency Approvals

Electromagnetic Compatibility Regulatory Statements

FCC Class A Compliance

CISPR 22

Canada

Europe—EU

VCCI Class A Notice for Japan

Class A Notice for Hungary

Class A Notice for Taiwan and Other Traditional Chinese Markets

Class A Notice for Korea

Obtaining Documentation

Cisco.com

Product Documentation DVD

Ordering Documentation

Documentation Feedback

Cisco Product Security Overview

Reporting Security Problems in Cisco Products

Obtaining Technical Assistance

Cisco Technical Support and Documentation Website

Submitting a Service Request

Definitions of Service Request Severity

Obtaining Additional Publications and Information


Converting an AC-Powered Cisco 12404 Router to DC Power


Product Number: PWR-GSR04-DC-PDU=, PWR-GSR04-DC-PEM=, PWR-GSR04-AC-PEM=, 12000/4-DC-PDU=, 12000/4-DC-PEM=, 12000/4-AC-PEM=

Overview

The Cisco 12404 Router is shipped configured with either two AC power supplies or two DC power supplies, depending on your order. Both the AC and DC power supplies are located at the rear of the chassis. AC power entry modules (AC PEMs) and DC_power entry modules (DC PEMs) support the online insertion and removable (hot-swappable) feature. A failed AC or DC PEM can be removed and replaced with the router powered on.


Warning Do not operate the router with both an AC PEM and a DC PEM installed at the same time. The Cisco 12404 Router must be equipped with either AC PEMs installed in both power shelves or DC PEMs installed in both power shelves.


DC power distribution units (PDUs) are not hot-swappable and as such, power to the router must be turned off to remove and replace either DC PDU.

Converting router power is described in the following sections.

Converting the Router to DC Power

Installing a DC PDU and DC PEM

Converting the Router to AC Power

Regulatory, Compliance, and Safety Information

Obtaining Documentation

Documentation Feedback

Cisco Product Security Overview

Obtaining Technical Assistance

Obtaining Additional Publications and Information

The Cisco 12404 router is configured and shipped in one of the following power configurations.

AC Configuration

Figure 1 shows two AC power entry modules (PEMs).

Figure 1 AC Power Supply Location—Rear of Chassis

DC Configuration

Figure 2 shows:

Two DC power entry modules.

Two DC power distribution units (PDUs).

Figure 2 DC Power Supply Location—Rear of Chassis

Converting the Router to DC Power

Use the following illustrations and these instructions to convert your router from AC power to DC power. This procedure requires you to completely remove the existing AC power supplies from both of the power supply shelves.

Tools and Equipment

These tools and equipment are needed to remove an AC PEM:

ESD-preventive strap

3/16-inch flat-blade screwdriver

AC PEM, Part Number PWR-GSR04-AC-PDU=

Optional: If the AC PEM is hot, you may need gloves or protection for your hands.

Powering Off the AC Powered Router

Power off the router as described in the following steps.


Caution Turn off the AC PEM power switch for each AC PEM installed.


Step 1 Turn off all circuit breakers for AC source power

Step 2 Unplug all power cords from all AC power source outlets

Step 3 Attach an ESD-preventive strap to your wrist or ankle; and attach the ESD clip to the chassis or to a bare metal surface

Step 4 Release the bail latch holding the AC power cord to the power receptacle

Step 5 Unplug the power cord from the AC PEM receptacle

Step 6 Verify that the green AC PEM Input OK, Output OK, and amber Output Fail LEDs are all off

Step 7 Visually check that the AC PEM fans are all off

Step 8 Visually check that the fan tray assembly fans are all off

Step 9 Visually check that all route processor (RP) and line card LEDs are all off

Step 10 Visually check that the consolidated switch fabric (CSF) LEDs are all off


Caution In a noisy environment, place your hand in front of the fan compartment on each part with a fan to ensure the fans are all off.


Removing an AC PEM

Use Figure 3 and the following instructions to remove all AC PEMs installed in the router.


Note The AC PEM is hot-swappable, weighs 11.0 lbs. (4.98 kg), and should be lifted with both hands.



Step 1 Attach an ESD-preventive strap to your wrist or ankle; and attach the ESD clip to the chassis or to a bare metal surface


Timesaver Verify which AC PEM is faulty and mark it for later identification.


Step 2 Turn off the AC PEM On/Off power switch

Step 3 Release the bail latch holding the AC power cord to the power receptacle

Step 4 Unplug the power cord from the AC PEM receptacle on the PEM

Step 5 Verify that the green Input OK, Output OK, and amber Output Failed LEDs are all Off

Step 6 Visually check that the AC PEM fans are all Off

Step 7 Loosen the two captive screws that attach the PEM to the chassis


Caution The AC PEM may be hot, use caution when handling a hot PEM.

Step 8 Use the finger grips to pull out the AC PEM from the PEM bay

Step 9 Set aside the PEM

Figure 3 AC PEM

1

AC PEM finger grips

4

Power cord receptacle

2

On/Off power switch

5

LEDs

3

Bail latch

6

Captive screws



Tip If you plan to return the defective PEM to the factory, repackage it in the shipping container you received with the replacement PEM.



Installing a DC PDU and DC PEM

Use this procedure and Figure 4 to install a DC PEM and DC PDU onto each power supply shelf in the router. The DC PEM is hot-swappable, weighs 11.0 lbs. (4.98 kg), and should be lifted with both hands.


Warning Ensure the DC PEM power switch is off.



Step 1 Attach an ESD-preventive strap to your wrist or ankle; and attach the ESD clip to the chassis or to a bare metal surface

Step 2 Turn off the DC PEM power switch

Step 3 Grasp the DC PDU and PEM unit with both hands and slide the PEM into the vacant PEM bay


Warning Do not operate the router with both an AC PEM and a DC PEM installed at the same time. The Cisco 12404 router must be equipped with either AC PEMs installed in both power shelves or DC PEMs installed in both power shelves.


Step 4 Ensure the PDU and PEM are secure on the power shelf and the PEM connector is seated to the PDU connector

Electrical connections between the PDU and the PEM are made automatically when the PEM is fully seated on the power shelf, and the system screws and captive screws are tightened. See Figure 4.


Caution Ensure the DC PEM power switch is in the off position.

Step 5 Using a flat-blade screwdriver, tighten all of the captive screws

Step 6 Turn on the DC PEM power switch

Step 7 Visually check that the green Input OK and Output OK LEDs are both on

Step 8 Visually check that the amber OUTPUT FAIL LED is off

Step 9 Visually check that the DC PEM fans are on

Figure 4 DC PEM and PDU

1

DC PDU

5

On/Off power switch

2

DC PEM

6

PDU captive screws

3

System captive screws

7

Terminal block

4

LEDs

   


Checking the DC PDU and DC PEM Installation

After installing the DC PDU and DC PEM in the chassis use Figure 4 and this procedure to check that the power supply has been installed correctly and is operating properly.


Step 1 Attach an ESD-preventive strap to your wrist or ankle; and attach the ESD clip to the chassis or to a bare metal surface

Step 2 Ensure the DC PDU and DC PEM are completely inserted in the power shelf

Step 3 Ensure the On/Off power switch is turned on

Step 4 If the Input OK and Output OK LEDs on the PEM are off, verify the following:

DC PEM and DC PDU are firmly seated in the power shelf

DC PEM power switch is on

All PDU and PEM captive screws are tight.

Step 5 If the amber Output Fail LED is on, verify the following:

DC PEM and DC PDU are firmly seated in the power shelf

DC power source circuit breaker is switched on

DC power cables are firmly attached to the terminal block

DC PEM power switch is on

All PDU and PEM captive screws are tight

Step 6 If the amber Output Fail LED on the PEM remains on after you have verified the items in step 5, suspect a faulty PEM

Step 7 Replace the existing PEM with a spare PEM, and start over at Step 1. If the amber Output Fail LED on the replacement PEM stays on, contact a Cisco service representative for assistance

Step 8 If the green Input OK and Output OK LEDs on the spare PEM go on, return the faulty PEM for replacement


You have successfully converted your AC powered router to DC power.

Converting the Router to AC Power

Use the following illustrations and these instructions to convert your router from DC power to AC power. This procedure requires you to completely remove the existing DC PDU and DC PEM from the power supply shelves.

Powering Off the DC Powered Router

Power off the DC powered router as described in the following steps.


Caution Turn off the DC PEM power switch for each DC PEM installed.


Step 1 Turn the DC PEM power switch Off for each DC PEM installed

Step 2 Turn off all circuit breakers for DC source power

Step 3 Attach an ESD-preventive strap to your wrist or ankle; and attach the ESD clip to the chassis or to a bare metal surface

Step 4 Verify that the green DC PEM Input OK, Output OK, and amber Output Fail LEDs are all off

Step 5 Visually check that the fan tray assembly fans are all off

Step 6 Visually check that the DC PEM fans are all off

Step 7 Visually check that all route processor (RP) and line card LEDs are all off

Step 8 Visually check that the consolidated switch fabric (CSF) LEDs are all off

Step 9 Remove all power lines positive (+), negative (-) and ground wires connected to the DC PDU terminal block


Caution In a noisy environment, place your hand in front of the fan compartment on each part with a fan to ensure the fans are all off.


Removing a DC PDU and DC PEM

The DC PDU and DC PEM are located at the rear of the chassis on the power supply shelves. See Figure 2. The following procedure describes how to turn off and remove all of the DC PDUs and DC PEMs installed in the router.


Step 1 Attach an ESD-preventive strap to your wrist or ankle; and attach the ESD clip to the chassis or to a bare metal surface

Step 2 Turn off the switch on the DC PEM. See Figure 4.

Step 3 Verify that the green Input OK, Output OK, and amber Output Fail LEDs are all off

Step 4 Visually check that the DC PEM fans are all off

Step 5 Loosen the system captive screw that secure the PEM to the chassis

Step 6 Loosen the two captive screws that secure the PEM to the PDU

Step 7 Use the finger grips to pull the DC PDU and PEM off the power supply shelf

Step 8 Set aside the PDU and PEM unit


Tip If you plan to return the defective parts to the factory, repackage them in the shipping container you received with the replacement parts.



Installing an AC PEM

Use this procedure, Figure 1 and Figure 3 to install an AC PEM onto each power supply shelf in the router.


Note The AC PEM is hot-swappable, weighs 11.0 lbs. (4.98 kg), and should be lifted with both hands.



Step 1 Attach an ESD-preventive strap to your wrist or ankle; and attach the ESD clip to the chassis or to a bare metal surface

Step 2 Grasp the AC PEM with both hands and slide the PEM into the vacant PEM shelf until the PEM connector is seated to the backplane connector


Warning Do not operate the router with both an AC PEM and a DC PEM installed at the same time. The Cisco 12404 router must be equipped with either AC PEMs installed in both power shelves or DC PEMs installed in both power shelves.


Step 3 Ensure the PEM is secure on the shelf and the PEM connector is seated to the backplane connector

Electrical connections between the AC PEM and the backplane connector are made automatically when the PEM is fully seated in the power supply shelf and all the captive screws are tightened.

Step 4 Ensure the AC PEM power switch is in the off position

Step 5 With a flat-blade screwdriver, tighten the two AC PEM captive screws

Step 6 Plug the power cord into the AC PEM receptacle

Step 7 Affix the bail latch over the power cord to secure it to the receptacle


Note If necessary, remove your ESD-preventive strap


Step 8 Plug the power cord from the AC PEM into the AC power source

Step 9 Turn on the AC power source circuit breakers


Caution If you detached the ESD-preventive strap from your wrist or ankle, re-attach it to your body and to the chassis or to a bare metal surface

Step 10 Turn on the AC PEM power switch

Step 11 Visually check that the green Input OK and Output OK LEDs are both on

Step 12 Visually check that the amber Output Fail LED is off

Step 13 Visually check that the AC PEM fans are all on


Caution In a noisy environment, place your hand near the AC PEM fans to ensure they are running.


Checking the AC PEM Installation

After re-installing the PEM in the chassis use Figure 3, Figure 5, and these steps to check that the PEM is installed correctly and is operating properly.


Step 1 Attach an ESD-preventive strap to your wrist or ankle; and attach the ESD clip to the chassis or to a bare metal surface

Step 2 Ensure the AC PEM is completely inserted into its bay

Step 3 Ensure the On/Off power switch is turned on

Step 4 If the Input OK and Output OK LEDs on the PEM are off, verify the following:

AC PEM is firmly seated in power supply shelf

AC power source circuit breaker is switched on

AC power cord is firmly plugged into the AC power source receptacle

AC power cord is firmly plugged into the PEM and the bail latch is secure over the AC power cord plug

AC power switch is on

All captive screws are tight

Figure 5 AC PEM LEDs

1

INPUT OK

Green On

AC PEM is operating normally in a power-on condition

2

OUTPUT OK

Green On

AC power source is present and operating within specified limit

3

OUTPUT FAIL

Amber On

PEM is operating in a fault condition and shutdown has occurred


Step 5 If the amber Output Fail LED is on, verify the following:

AC PEM is firmly seated in power supply shelf

AC power source circuit breaker is switched on

AC power cord is firmly plugged into the AC power source receptacle

AC power cord is firmly plugged into the PEM and the bail latch is secure over the AC power cord plug

AC power switch is on

All captive screws are tight

Step 6 If the amber Output Fail LED on the PEM remains on, after you have verified the items in step 5, suspect a faulty PEM

Step 7 Replace the existing PEM with a spare PEM, and start over at Step 1. If the amber Output Fail LED on the replacement PEM stays on, contact a Cisco service representative for assistance.

Step 8 If the green Input OK and Output OK LEDs on the spare AC PEM goes on, return the faulty PEM for replacement


You have successfully converted your DC powered router to AC power.

Regulatory, Compliance, and Safety Information

This section includes regulatory, compliance, and safety information.

Translated Safety Warnings and Agency Approvals

The complete list of translated safety warnings and agency approvals is available in the Regulatory Compliance and Safety Information for Cisco 12000 Series Routers publication.

Electromagnetic Compatibility Regulatory Statements

FCC Class A Compliance

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio-frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case you are required to correct the interference at your own expense.

Modifying the equipment without Cisco authorization may result in the equipment no longer complying with FCC requirements for Class A digital devices. In that event, your right to use the equipment may be limited by FCC regulation and you may be required to correct any interference to radio or television communication at your own expense.

You can determine whether your equipment is causing interference by turning it off. If the interference stops, it was probably caused by the Cisco equipment or one of its peripheral devices. If the equipment causes interference to radio or television reception, try to correct the interference by using one or more of the following measures:

Turn the television or radio antenna until the interference stops.

Move the equipment to one side or the other of the television or radio.

Move the equipment farther away from the television or radio.

Plug the equipment into an outlet that is on a different circuit from the television or radio. (That is, make certain the equipment and the television or radio are on circuits controlled by different circuit breakers or fuses.)

CISPR 22

This apparatus complies with CISPR 22/EN55022 Class B radiated and conducted emissions requirements.

Canada

English Statement of Compliance

This class A digital apparatus complies with Canadian ICES-003.

French Statement of Compliance

Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.

Europe—EU

This apparatus complies with EN55022 Class B and EN55024 standards when used as ITE/TTE equipment, and EN300386 for Telecommunications Network Equipment (TNE) in both installation environments, telecommunication centers and other indoor locations.

VCCI Class A Notice for Japan

Warning


This is a Class A product based on the standard of the Voluntary Control Council for Interference by Information Technology Equipment (VCCI). If this equipment is used in a domestic environment, radio disturbance may arise. When such trouble occurs, the user may be required to take corrective actions. Statement 191


Class A Notice for Hungary

Warning


This equipment is a class A product and should be used and installed properly according to the Hungarian EMC Class A requirements (MSZEN55022). Class A equipment is designed for typical commercial establishments for which special conditions of installation and protection distance are used. Statement 256


Class A Notice for Taiwan and Other Traditional Chinese Markets

Warning


This is a Class A Information Product, when used in residential environment, it may cause radio frequency interference, under such circumstances, the user may be requested to take appropriate countermeasures. Statement 257


Class A Notice for Korea

Warning


This is a Class A Device and is registered for EMC requirements for industrial use. The seller or buyer should be aware of this. If this type was sold or purchased by mistake, it should be replaced with a residential-use type. Statement 294


Obtaining Documentation

Cisco documentation and additional literature are available on Cisco.com. Cisco also provides several ways to obtain technical assistance and other technical resources. These sections explain how to obtain technical information from Cisco Systems.

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:

http://www.cisco.com

You can access international Cisco websites at this URL:

http://www.cisco.com/public/countries_languages.shtml

Product Documentation DVD

Cisco documentation and additional literature are available in the Product Documentation DVD package, which may have shipped with your product. The Product Documentation DVD is updated regularly and may be more current than printed documentation.

The Product Documentation DVD is a comprehensive library of technical product documentation on portable media. The DVD enables you to access multiple versions of hardware and software installation, configuration, and command guides for Cisco products and to view technical documentation in HTML. With the DVD, you have access to the same documentation that is found on the Cisco website without being connected to the Internet. Certain products also have .pdf versions of the documentation available.

The Product Documentation DVD is available as a single unit or as a subscription. Registered Cisco.com users (Cisco direct customers) can order a Product Documentation DVD (product number DOC-DOCDVD=) from the Ordering tool or Cisco Marketplace.

Cisco Ordering tool:

http://www.cisco.com/en/US/partner/ordering/

Cisco Marketplace:

http://www.cisco.com/go/marketplace/

Ordering Documentation

Registered Cisco.com users may order Cisco documentation at the Product Documentation Store in the Cisco Marketplace at this URL:

http://www.cisco.com/go/marketplace/

Cisco supports documentation orders using the ordering tool:

Registered Cisco.com users (Cisco direct customers) can order documentation from the Ordering tool:

http://www.cisco.com/en/US/partner/ordering/

Instructions for ordering documentation using the Ordering tool are at this URL:

http://www.cisco.com/univercd/cc/td/doc/es_inpck/pdi.htm

Nonregistered Cisco.com users can order documentation through a local account representative by calling Cisco Systems Corporate Headquarters (California, USA) at 408 526-7208 or, elsewhere in North America, by calling 1 800 553-NETS (6387).

Documentation Feedback

You can rate and provide feedback about Cisco technical documents by completing the online feedback form that appears with the technical documents on Cisco.com.

You can send comments about Cisco documentation to bug-doc@cisco.com.

You can submit comments by using the response card (if present) behind the front cover of your document or by writing to the following address:

Cisco Systems
Attn: Customer Document Ordering
170 West Tasman Drive
San Jose, CA 95134-9883

We appreciate your comments.

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 can perform these tasks:

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 and notices for Cisco products is available at this URL:

http://www.cisco.com/go/psirt

If you prefer to see advisories and notices as they are updated in real time, you can access a Product Security Incident Response Team Really Simple Syndication (PSIRT RSS) feed from 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 might have identified a vulnerability in a Cisco product, contact PSIRT:

Emergencies — 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.

Nonemergencies — psirt@cisco.com

In an emergency, you can also reach PSIRT by telephone:

1 877 228-7302

1 408 525-6532


Tip Use Pretty Good Privacy (PGP) or a compatible product to encrypt sensitive information that you send to Cisco. PSIRT can work from encrypted information compatible with PGP Versions 2.x through 8.x.

Never use a revoked or an expired encryption key. The correct public key to use in your correspondence with PSIRT is the key 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.htm

The link on this page has the current PGP key ID in use.


Obtaining Technical Assistance

Cisco Technical Support provides 24-hour-a-day award-winning technical assistance. The Cisco Technical Support & Documentation 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 Technical Support and Documentation Website

The Cisco Technical Support and Documentation 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/techsupport

Access to all tools on the Cisco Technical Support & Documentation 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 Use the Cisco Product Identification (CPI) tool to locate your product serial number before submitting a web or phone request for service. You can access the CPI tool from the Cisco Technical Support & Documentation website by clicking the Tools & Resources link under Documentation & Tools. Choose Cisco Product Identification Tool from the Alphabetical Index drop-down list, or click the Cisco Product Identification Tool link under Alerts & RMAs. The CPI 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.


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: 1 800 553-2447

For 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)—Your 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 operation 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 your network is impaired, but 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.

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:

http://www.ciscopress.com

Packet magazine is the Cisco Systems technical user magazine for maximizing Internet and networking investments. Each quarter, Packet delivers coverage of the latest industry trends, technology breakthroughs, and Cisco products and solutions, as well as network deployment and troubleshooting tips, configuration examples, customer case studies, certification and training information, and links to scores of in-depth online resources. You can access Packet magazine at this URL:

http://www.cisco.com/packet

iQ Magazine is the quarterly publication from Cisco Systems designed to help growing companies learn how they can use technology to increase revenue, streamline their business, and expand services. The publication identifies the challenges facing these companies and the technologies to help solve them, using real-world case studies and business strategies to help readers make sound technology investment decisions. You can access iQ Magazine at this URL:

http://www.cisco.com/go/iqmagazine

or view the digital edition at this URL:

http://ciscoiq.texterity.com/ciscoiq/sample/

Internet Protocol Journal is a quarterly journal published by Cisco Systems 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:

http://www.cisco.com/ipj

Networking products offered by Cisco Systems, 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 for networking professionals to 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

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