Network technologies and trends


September 19, 2011  5:45 AM

What is Universal Power over Ethernet (UPOE)?



Posted by: Yasir Irfan
60-watt Power over Ethernet technology, BT IP turrets, cabling infrastructure, Cat 5e, Cisco Access Point, Cisco Catalyst 4500E Switch, Cisco Switches, compact switches, IEEE, IEEE 802.3af standard, network access, OPOE, Oracle Sun ray clients, POE, Power over Ethernet, Samsung zero client desktop virtualization, single standard Ethernet cable, Switches, telepresence, UPOE technology, what is Cisco Universal Power over Ethernet, What is Universal Power over Ethernet

When it comes delivering power to Cisco Access Points and Cisco IP Phones we all know about the IEEE 802.3af standard which defines standard Power over Ethernet (PoE).  But what is Cisco Universal Power over Ethernet (UPOE)? This is new term for most of us.

It’s a new innovation from Cisco Systems which happens to the industry’s first 60-watt Power over Ethernet technology which Cisco called Universal Power over Ethernet (UPOE).

Cisco Universal Power over Ethernet (UPOE) can offer twice the power per port of products from competing switch vendors – providing both power and network access to a greater range of devices through a single standard Ethernet cable. This can surely help to lower the total cost of IT operations. By using Cisco’s new UPOE line card and UPOE splitter, any device requiring up to 60-watt power can now be powered by Cisco’s Catalyst 4500E Switches. This includes Cisco IP phones, personal telepresence systems, compact switches and Cisco wireless access points.

[kml_flashembed movie="http://www.youtube.com/v/RASdhbNdFQU" width="425" height="350" wmode="transparent" /]

Currently Cisco is working with IEEE and third-party device manufacturers to standardize UPOE in next-generation, network-enabled devices. Which for sure may lead to new PoE standard from IEEE?

Currently  Samsung zero client desktop virtualization devices and BT IP turrets have integrated Cisco UPOE technology into their devices to allow customers the immediate advantage of using their existing Cisco network to power these solutions. This is good sign for this emerging technology. Cisco also tested many devices using UPOE technology like Oracle Sun ray clients.

Currently the Cisco Universal Power over Ethernet is available with a new line card on the Cisco Catalyst 4500E switch. The Single Cisco Catalyst Switch 4500E chassis can support up to 120 UPOE ports. The OPOE is utilizes the existing UTP Cabling standard Cat 5e or higher and RJ 45 connectors for deployment. This helps the customers to make use of their existing cabling infrastructure.

September 12, 2011  6:15 AM

Preparing for CCNP Voice? Consider attending this webcast!



Posted by: Yasir Irfan
AMI, CAS, CCIE, Channel Associated Signaling, Cisco CCNP Voice, Cisco CCNP Voice (CVoice): VoIP Fundamentals: Digital Voice Ports, Cisco Certifications, Cisco Press, Cisco Voice Certification, Common Channel Signaling, CVoice, digital voice ports, E1, E1 circuit, ESF, ISDN PRI circuit, Kevin Wallace, Pearson IT Certification, Preparing for CCNP Voice, Presented by Kevin Wallace, T1, voice over IP (VoIP) Fundamentals, webcast

Good news for all those who are planning to peruse a Cisco Voice Certification. Pearson IT Certification presents their Webcast series where their authors connect with you via the web for live and on demand webcast workshops to help you as you prepare for your Cisco certifications.

On 28th of September 2011, renowned Cisco Press author Kevin Wallace will present the second of a two-part live webcast series on voice over IP (VoIP) Fundamentals. During this 30 minute webcast, you are introduced to digital voice ports, including T1 and E1 ports. You will learn the difference between Channel Associated Signaling (CAS) and Common Channel Signaling (CCS), and why you never want to use CAS on an E1 circuit. After learning the meaning behind such acronyms as ESF, AMI, and B8ZS, you will see how to configure and troubleshoot an ISDN PRI circuit in this action-packed 30 minute webcast.

Who knows by registering and attending you might even get an opportunity win a free title of your choice published by Pearson IT Certification.

Details of Webcast

Cisco CCNP Voice (CVoice): VoIP Fundamentals: Digital Voice Ports

Presented by Kevin Wallace, CCIE
Wednesday, September 28 • 3:00 p.m. Eastern • FREE


September 12, 2011  5:57 AM

Review for CCNP ROUTE 642-902 Official Certification Guide by Wendell Odom



Posted by: Yasir Irfan
642- 902, CCNA, CCNP ROUTE 642-902 Official Certification Guide, CCNP ROUTE 642-902 Official Certification Guide by Wendell Odom, CCNP self-study, challenge of Cisco CCNP Route Exam 642- 902, Cisco CCNP Route 642-902 CBT Nuggets, Cisco Certification exams, Cisco Certifications, Cisco Press, Cisco Press Title, Cisco Press titles, EIGRP, How to pass Cisco CCNP Route Exam 642- 902 Exam, how to pass the Cisco Certification exam, ICND1, ICND2, resources required to pass the CCNP Route 642-902 exam, Review for CCNP ROUTE 642-902 Official Certification Guide, technical writing, tips and techniques to pass CCNP, Wendell Odom

In my previous article, we over looked how to pass the CCNP Route 642-902 exam? Also I mentioned the resources required to pass the CCNP Route 642-902 exam. First and foremost the most valuable resource available is the title from Cisco Press called “CCNP ROUTE 642-902 Official Certification Guide by Wendell Odom“.

I thought let me review this title for the benefit of Cisco Certification aspires. No doubt the CCNP ROUTE 642-902 Official Certification Guide is an excellent title with lot of info available in depth. As promised by Cisco Press this title is covers all the topics of Cisco CCNP Route 642-902 exam. This title too follows the typical Cisco Press Style; each chapter begins with “Do I know this Already? Quiz? Which is good to assess your knowledge and accordingly you can prepare for the exam. The best thing I personally liked about this title is the author started by reviewing EIGRP from CCNA perspective.

When I first Wendell Odom’s ICND 1 and 2, I was zapped with his technical writing skills and the way he presented the topics were simply awesome. I was expecting similar interesting wring from Wendell in   title CCNP ROUTE 642-902 Official Certification Guide, but rather it was bit boring and lengthy. There are few typos as well in this title. It would have been a great title if the concepts were explained in short and concise.

However I think this title has a lot of great information in it which is sufficient to pass the Cisco CCNP Route 642-902 Exam. Wendell Odom does a great job of explaining things in detail. I just wish it was an error free title especially when it comes from Cisco Press.


September 7, 2011  6:37 AM

How to pass Cisco CCNP Route Exam 642- 902 Exam?



Posted by: Yasir Irfan
642- 902, an open-source Cisco Emulator, Boson Exam Engine questions, Boson Net Simulator, CBT Nuggets, CCNP ROUTE 642-902 Official Certification Guide, CCNP ROUTE 642-902 Official Certification Guide by Wendell Odom, CCNP self-study, challenge of Cisco CCNP Route Exam 642- 902, Cisco Academy, Cisco CCNP Route 642-902 CBT Nuggets, Cisco CCNP Route 642-902 CBT Nuggets Series, Cisco Certification exams, Cisco Network Academy, Cisco Press, Cisco Press Title, Cisco Press titles, Cisco Routers Configurations, GNS3, GNS3 labs, How to pass Cisco CCNP Route Exam 642- 902 Exam, how to pass the Cisco Certification exam, Simulator, the topologies used by Jeremy, tips and techniques to pass CCNP

When it comes to passing the Cisco Certification exams, the first questions comes to mind is “how to pass the Cisco Certification exam? Each and every individual has his or her own approach. Some of them prefer self-study, they buys some Cisco Press titles, CBT nuggets and some simulators such as boson Net simulators or emulators such as GNS3 (an open-source Cisco Emulator) and some attend the Instructor led courses offered by Cisco Network Academy or by their partners. But want if some is new to the field and prefers the self-study approach and need to know the tips and techniques which might help him/her to pass the CCNP Route 640-902 (Implementing Cisco Route) Exam.

Recently I passed the CCNP Route 640-902 (Implementing Cisco Route) Exam. My approach pretty simple, I did the following

1)First and foremost set the deadline for the exam when you are planning take, mark your calendar ( Goal setting)

2)Read and master the Cisco Press title CCNP ROUTE 642-902 Official Certification Guide by Wendell Odom, as well the practice the Boson Exam Engine questions came with the Cisco Press Title.

3)Watch Cisco CCNP Route 642-902 CBT Nuggets Series are great especially the way Jeremy connects with his audience, I love it. Watch these nuggets until you master the topic; the best part is listening to them while you are driving to work or while you are on the road. Make use of time.

4)Set up the GNS3 labs (an open-source Cisco Emulator) and practice them. When you buy the Cisco CCNP Route 642-902 CBT Nuggets Series you are entitled to get the topologies used by Jeremy.( Practice as much you can, more practice masters you and make you more familiarize with Cisco Routers Configurations)

By the time you’re done with reading the Cisco Press CCNP ROUTE 642-902 Official Certification Guide by Wendell Odom, watching the Cisco CCNP Route 642-902 CBT Nuggets Series and practicing the GNS3 labs you’ll be ready to take the challenge of Cisco CCNP Route Exam 642- 902(Implementing Cisco Route) Exam.


August 27, 2011  10:22 AM

Cisco Introduces New Entry-Level Certifications – Series 3



Posted by: Yasir Irfan
640-692 RSTECH, 640-792 TPTECH, 640-893 DCTECH, CCT, Cisco CCT Data Center certification, Cisco CCT TelePresence certification, Cisco Certifications, Cisco Certified Technician, Cisco Command Line Interface (CLI) Cisco Command Line Interface (CLI) Tandberg, Cisco Learning Network Website, Cisco Routers, Cisco Switches, Cisco Systems, Cisco TelePresence operating modes, Data Center, hot-swap, MSD 9000, Nexus 2000, Nexus 5000, Nexus 7000, Routers, SAN Switches, Supporting Cisco Data Center System Devices v1.0, Supporting Cisco Routing & Switching Network Devices v1.0, Supporting Cisco TelePresence System Devices v1.0 Cisco CCT Telepresence Certification, Switches, TAC tickets, telepresence, Telepresence business, troubleshooting

After acquiring Tandberg, Cisco Systems made a significant progress in Telepresence business. Now Telepresence is not just a mere conferencing solution this technology is widely used in entertainment business as well.

Look at its popularity it was a right move by Cisco Systems to introduce the Cisco CCT Telepresence Certification, which focuses on the on the skills required for onsite support and maintenance of Cisco TelePresence Systems. Technicians in this area must be able to identify Cisco TelePresence models, accessories, cabling, and interfaces; understand the Cisco TelePresence operating modes and identify commonly found software; and be able to use the Cisco Command Line Interface (CLI) to connect and service products and make basic Cisco TelePresence system adjustments.

The only prerequisite for Cisco CCT Telepresence Certification is Cisco CCT Routing and Switching.

CCT TelePresence Exams & Recommended Training
Required Exam(s) Recommended Training
640-792 TPTECH Supporting Cisco TelePresence System Devices v1.0

For further details do check the Cisco Learning Network Website


August 27, 2011  10:07 AM

Cisco Introduces New Entry-Level Certifications – Series 2



Posted by: Yasir Irfan
640-692 RSTECH, 640-893 DCTECH, CCT, Cisco CCT Data Center certification, Cisco CCT TelePresence certification, Cisco Certifications, Cisco Certified Technician, Cisco Learning Network Website, Cisco Routers, Cisco Switches, Cisco Systems, Data Center, hot-swap, MSD 9000, Nexus 2000, Nexus 5000, Nexus 7000, Routers, SAN Switches, Supporting Cisco Data Center System Devices v1.0, Supporting Cisco Routing & Switching Network Devices v1.0, Switches, TAC tickets, telepresence, troubleshooting

In my previous post I discussed about the introduction of Cisco Certified Technician (CCT), as well as the Cisco CCT Routing and Switching, Cisco CCT Telepresence Certification and Cisco CCT Data Center Certification.

Personally I welcome the introduction of Cisco CCT Data Center certification, especially after Cisco announced their Nexus 7000, Nexus 5000, and Nexus 2000 Series Switches which are specially designed for Data Centers. Certainly this move by Cisco System empowers the Data Center operators or Technicians to demonstrate the knowledge and ability required for the onsite support and Maintenance of Cisco Data Center Products.

The Cisco CCT Data Center Certification ensures that the certified individual have knowledge of the Cisco Nexus 7000, Nexus 5000, Nexus 2000 and MSD 9000 (SAN Switches) product line along with the basic knowledge of the NX-OS and simple commands required to perform tasks such as password recovery.

In order to be  Cisco CCT Data Center Certified the only prerequisite is to have valid Cisco CCT Routing and Switching Certification.

Required Exam(s)

Recommended Training

640-893 DCTECH

Supporting Cisco Data Center System Devices v1.0

For further details do check the Cisco Learning Network Website


August 24, 2011  7:38 PM

Cisco Introduces New Entry-Level Certifications – Series 1



Posted by: Yasir Irfan
640-692 RSTECH, CCT, Cisco CCT Data Center certification, Cisco CCT TelePresence certification, Cisco Certifications, Cisco Certified Technician, Cisco Routers, Cisco Switches, Cisco Systems, Data Center, hot-swap, Routers, Supporting Cisco Routing & Switching Network Devices v1.0, Switches, TAC tickets, telepresence, troubleshooting

Yesterday a major announcement came out from Cisco Systems. It’s about the introduction of Cisco Certified Technician (CCT) to its career Certification Program. So with an introduction of Cisco Certified Technician (CCT) training and certification program, Cisco Systems is targeting even the Network Technicians who perform onsite support and maintenance for Cisco infrastructure for Routing and Switching, TelePresence and Data Center solutions. At least now I can convince my management to give me some relief as my technicians are certified by Cisco Systems to carry out some of the basic tasks in our Data Center.

Currently Cisco Systems are offering three Cisco Certified Technician (CCT) Certifications.

1)      Cisco CCT Routing & Switching certification

2)      Cisco CCT Data Center certification

3)      Cisco CCT TelePresence certification.

The Cisco CCT Routing & Switching certification which certifies that an onsite technician has the required skills and knowledge to work with Cisco Routers and Switches performing task such as troubleshooting, repairs, hot-swap of specific components, and create TAC tickets as required. The Cisco CCT Routing and Switching certification serves as a prerequisite for the Cisco CCT Data Center certification and the Cisco CCT TelePresence certification.

Exams & Recommended Training for Cisco CCT Routing & Switching certification are as follows

Required Exam(s)

Recommended Training

640-692 RSTECH

Supporting Cisco Routing & Switching Network Devices v1.0

In my next post I will talk about Cisco CCT Data Center certification and the Cisco CCT TelePresence certification. It’s a good move from Cisco and for sure this certification is very handy and provides a solid foundation to all those technicians who are aim the sky (CCIE)


August 17, 2011  10:25 PM

Total no of CCIE’s worldwide



Posted by: Yasir Irfan
CCIE Routing and Switching, CCIE Security, CCIE Service Provider, CCIE Storage Networking, CCIE Voice, CCIE Wireless, Cisco Certifications, Cisco Certified Internetwork Experts, Cisco Data Center/Storage Certification, Cisco Live Virtual web site, Total of Worldwide CCIEs, Total with 3 or More Certifications, Total with Multiple Certifications Worldwide

Recently I was going through Cisco Live Virtual web site and I was browsing the presentation Cisco Data Center/Storage Certification. According to Cisco Data Center/Storage Certification Presentation there are 22741 Cisco Certified Internetwork Experts (CCIE’s) worldwide. Still CCIE Routing and Switching lead the table followed by CCIE Security.Here is the detailed breakout of CCIE World Wide statistics which was last updated on 2/18/2011.

Pic Courtesy: Cisco Systems


Total of Worldwide CCIEs 22741
Total of Routing and Switching CCIEs 16647
Total of Security CCIEs 2537
Total of Service Provider CCIEs 1951
Total of Service Provider Operation CCIEs 5
Total of Storage Networking CCIEs 145
Total of Voice CCIEs 1414
Total of Wireless CCIEs 42

According my assumption if someone who is targeting either CCIE Security or Voice they are expected to find enormous opportunities. But Routing and Switching CCIE happens to be a most valued IT Certification.

Many CCIEs have gone on to pass the Certification Exams In Additional Tracks, Becoming a ―Multiple CCIE.Below Are Selected Statistics on CCIEs Who Are Certified in More Than One Track

Total with Multiple Certifications Worldwide 2650
Total of Routing and Switching and Security CCIEs 809
Total of Routing and Switching and Service Provider CCIEs 790
Total of Routing and Switching and Storage Networking CCIEs 35
Total of Routing and Switching and Voice CCIEs 347
Total with 3 or More Certifications 476


August 16, 2011  7:55 AM

Difference between shared mode and dedicated mode operation in Nexus 7000 Series Switches – Series 2



Posted by: Yasir Irfan
10 Giga Ethernet module, 10-Gigabit Ethernet module, 80 GB fabric connection, a Cisco Nexus 7000 Series 8 port, Cisco Nexus 7000 Series 32-port, dedicated mode, Difference between shared mode and dedicated mode, N7K-M108X2-12L, N7K-M132XP-12, Nexus 7000 Series line card, Nexus 7000 Series Switches, over subscription, shared mode

In my previous post we discovered how Nexus 7000 Series line card works in shared mode. The other mode of operation is known as dedicated mode. Unlike in shared mode where four interfaces share the 10 Giga Bandwidth, the dedicated mode offers 10 GB bandwidth to the first interface of the group while all the three remaining will be disabled.

In previous post we learned how the of Cisco Nexus 7000 Series 32-port, 10-Gigabit Ethernet module (N7K-M132XP-12) works in shared mode by. In the Cisco Nexus 7000 Series 32-port, 10-Gigabit Ethernet module (N7K-M132XP-12) each group can be configured individually as either dedicated or shared mode. Always a dedicated port is easy to identify in any Nexus line card as they are marked yellow.

The main disadvantage of configuring a Cisco Nexus 7000 Series 32-port, 10-Gigabit Ethernet module is that you are losing 24 ports functionality as they are totally disabled, and the Cisco Nexus 7000 Series 32-port, 10-Gigabit Ethernet module works as 8 port module.  Rather I prefer to use a Cisco Nexus 7000 Series 8 port, 10 Giga Ethernet module (N7K-M108X2-12L).


August 10, 2011  7:41 AM

Difference between shared mode and dedicated mode operation in Nexus 7000 Series Switches – Series 1



Posted by: Yasir Irfan
10-Gigabit Ethernet module, 80 GB fabric connection, Cisco Nexus 7000 Series 32-port, dedicated mode, Difference between shared mode and dedicated mode, N7K-M132XP-12, Nexus 7000 Series Switches, over subscription, shared mode

When it comes to the line cards of Nexus 7000 Series Switches, they operate in either in shared mode or dedicated mode.  So what is the difference between shared mode and dedicated mode operation?

In shared mode operation say four interfaces of 10 Giga are grouped together and they offer in total of 10 GB of bandwidth, which creates an over subscription of 4:1

Take an example of Cisco Nexus 7000 Series 32-port, 10-Gigabit Ethernet module (N7K-M132XP-12), this 32 port 10 GE module have an 80 GB fabric connection so they are over 4:1 subscribed , in this module by default four interfaces grouped together either in odd numbers such as 1,3,5,7 or even numbers such as 2,4,6,8. Rather than offering 40 GB of bandwidth they offer just 10 GB of which results in over subscription. This mode of operation is known as shared mode operation, which is on by default in on all the Nexus 7000 Series Switch line cards except N7K-M108X2-12L line card.

In upcoming post I will talk about the dedicated mode and how we can configure ports to work in dedicated mode in Nexus 7000 Series Switch. Nexus 7000 Series Switch  line cards, N7K-M108X2-12L line card,


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