Network technologies and trends

January 26, 2010  5:58 AM

CCNP new requirements and New Cisco Press Resources

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

Yesterday Cisco announced some major updates for the most popular Cisco CCNP Certification program. Currently three new CCNP exams are revamped i.e. ROUTE 642-902, SWITCH 642-813, and TSHOOT 642-832, wow  titles looks great for me.


In the prevision version you were required to pass four exams BSCI, BCMSN, ISCW and ONT.  Whereas the new updated version of CCNP requires only three exams to pass. The exams will be available in March/April 2010. The current CCNP track is available until July 2010.

 News Facts:

  • The previous version of the CCNP required four exams: BSCI, BCMSN, ONT and ISCW. The revised certification now requires three 120-minute exams:
    • ROUTE #642-902 Implementing Cisco IP Routing
    • SWITCH #642-813—Implementing Cisco IP Switched Networks
    • TSHOOT #642-832——Troubleshooting and Maintaining Cisco IP
  • The new CCNP courses and e-learning materials are available now. The exams will be available in March/April 2010.
  • CCNP is the second most popular Cisco Certification, after CCNA®.
  • No other imprint publishes to the CCNP certification
  • Cisco Press CCNP products can be purchased at your favorite local bookstore, computer/electronic store, online bookseller, or


By February you can expect new CCNP Products from the official publisher Cisco Press, thanks to updates shared by Jamie Adam’s. According to the press release the new suite includes three Certification Guides and introduces a new product line for mid- to late-stage exam preparation, the Cert Kits, available for all three exams. Each Cert Kit provides a value-priced package combining video, print and electronic quick reference sheets, and online flash card preparation tools.


Pic Courtesy: Cisco Press

A complete listing of new CCNP products is available at

Available February 2010

CCNP ROUTE 642-902 Official Certification Guide / 1587202530 / 9781587202537

CCNP SWITCH 642-813 Official Certification Guide / 1587202433 / 9781587202438

CCNP TSHOOT 642-832 Official Certification Guide / 1587058448 / 9781587058448

*Discount-bundled package of all three Certification Guides:

CCNP Routing and Switching Official Certification Library / 1587202247 / 9781587202247

So start preparing for the new suite of most prestigious CCNP certification. Better luck. Do let me know if you pass the new CCNP Certification.

Some useful links

January 25, 2010  5:36 AM

Online Safety Tips for Data Privacy Day from Cisco Blogs

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

January 28th of 2010 has been designated Data Privacy Day , United States and 27 European countries will participate in an education and awareness-raising effort designed to promote understanding of privacy best practices and rights. Cisco Blogs come out with a very useful article about online safety tips

January 23, 2010  12:47 PM

How to abort a Ping sequence in a Cisco Device?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

Imagine you are trying to ping a device from your Cisco Switch or a Cisco Router, but by mistake you type a wrong IP address, instead of waiting for the device to give a request time out you can about the ping sequence in your Cisco Device by pressing <CTRL-SHIFT-6> twice in succession. The Cisco Switch or a Cisco Router mentions there is an escape sequence, but doesn’t tell you what it is!

From above picture notice that the ping sequence stopped at 3rd packet.  -5 packets is the default. This combination works for trace route as well pings, both extended and regular.


January 23, 2010  5:14 AM

Journey to Unified Computing -is back on 4th of Feb 2010

Yasir Irfan Yasir Irfan Profile: Yasir Irfan


Are you interested on the benefits ofunified computing in your data center, and then good news is here. Cisco TechWise TV team is coming back with a new broadcast on 4th February 2010.

For sure it will be a great opportunity to learn how this new architectural approach will dramatically reduce your server, cabling, cooling, provisioning, and management needs. And learn how you can take a building block approach to a unified data center, while enjoying significant ROI at each step. This event comes to you with the participation of Intel, VMware and BMC.

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So book your calendar, register here  and have fun on February 4th at 1:00 pm EST


·         Mapping the Journey

·         Intel and Cisco: Joined at the Chip

·         Cisco and the C-Series Servers

·         VMware and Virtualization-Aware Networking

·         BMC and Unified Computing

January 20, 2010  7:29 AM

Disable Cisco Discovery Protocol on unused interfaces

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

We all know how important a Cisco Discovery Protocol (CDP) to troubleshoot the network, but sometimes this may leads to a problem. These days lot of free CDP discovery utilities is available. Anyone can download the CDP utility and start gathering info about your network. It’s always recommended to disable the Cisco Discovery Protocol (CDP) on all the interfaces in your Cisco devices. The only interfaces need to use the Cisco Discovery Protocol (CDP) are the ones which are connected to your Cisco Routers and Cisco Switches. Cisco Discovery Protocol (CDP) can be disabled by using “no cdp enable” command in the entire interface you need.

In my access Switch the CDP is enabled in all interfaces, you can determine this by using a command “show cdp interfaces” you can see CDP is enabled in  all the interfaces.

ITKE-AS01#sho cdp interfaces

FastEthernet0/1 is down, line protocol is down

  Encapsulation ARPA

  Sending CDP packets every 60 seconds

  Holdtime is 180 seconds

FastEthernet0/2 is down, line protocol is down

  Encapsulation ARPA

  Sending CDP packets every 60 seconds

  Holdtime is 180 seconds

FastEthernet0/3 is up, line protocol is up

  Encapsulation ARPA

  Sending CDP packets every 60 seconds

  Holdtime is 180 seconds

FastEthernet0/4 is down, line protocol is down

  Encapsulation ARPA

  Sending CDP packets every 60 seconds

  Holdtime is 180 seconds



FastEthernet0/12 is down, line protocol is down

FastEthernet0/24 is up, line protocol is up

  Encapsulation ARPA

  Sending CDP packets every 60 seconds

  Holdtime is 180 seconds




Let’s see to which interface the router is connected

ITKE-AS01#show cdp neighbors

Capability Codes: R – Router, T – Trans Bridge, B – Source Route Bridge

                  S – Switch, H – Host, I – IGMP, r – Repeater, P – Phone,

                  D – Remote, C – CVTA, M – Two-port Mac Relay


Device ID        Local Intrfce     Holdtme    Capability  Platform  Port ID

MOHMPLS          Fas0/24          176            R       2620XM    Fas 0/0



Let’s disable the CDP in all the interfaces expect fast Ethernet 0/24


ITKE-AS01#configure t

ITKE-AS01(config)#interface range fastEthernet 0/1 -23

ITKE-AS01 (config-if-range)#no cdp enable


In the above example I have disabled CDP in all interfaces except the one connected to the router.


January 20, 2010  5:56 AM

“Imagine virtually anything” is possible.

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

 Cisco, NetApp and VMware have joined hand to present an elegant solution that may help you to imagine and achieve virtually anything, sounds great right. Then just register to the event and enjoy the executive discussions with Tony Bates, Cisco; Tom Georgens, NetApp; Paul Maritz, VMware; and a special guest and participate in a live Q&A with technical experts from all three companies.


The event is scheduled on 26th of Jan 2010 and timings are as follows

9:00–10:00 a.m. Pacific
12:00–1:00 p.m. Eastern



January 18, 2010  6:01 AM

Cisco AP 500 Series Wireless Access Points good for Small Business

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

Cisco Systems launched recently a Wireless access point targeting the Small to Midsize business. The Cisco AP 500 Access Point is easy to install and manage.  The clustering technology with simplifies the deployment and of Cisco AP 500 AP by creating single point of administration for multiple Cisco AP 500 Access Points. Currently Cisco is offering one model AP 541.


The Cisco AP 500 comes with clustering technology, Gigabit Ethernet LAN interface for higher throughput, 802.11n compliance and dual band user selection for either 2.4 GHz or 5 GHz and more over it supports voice roaming.


Some of the features of Cisco AP 500 are as follows

Cisco AP 500 Series Wireless Access Points offer a range of features:

  • Clustering Technology: Simplifies wireless deployments by creating a single point of administration for multiple access points. Clustering technology replicates a configuration, pushes it out to other access points, and continuously manages the frequency channels for each device, reducing network interface.
  • Superior Performance: Gigabit Ethernet LAN interface for higher throughput. Wireless radio complies with 802.11n wireless technology, using MIMO technology to enhance network coverage, capacity, and throughput for data and multimedia applications, while allowing for backward compatibility with a, b, and g clients.
  • Robust Security: Supports business-class security encryptions (WPA2, 802.1x supplicant) and authentication for client compatibility, MAC address authentication, client isolation, and rogue access point detection.
  • Voice Roaming: Allowing for client fast roaming while maintaining good voice quality with 802.11i pre-authenticated standards.
  • Power Options: Uses both standard AC power and Power-over-Ethernet (PoE), simplifying installations in locations such as drop ceilings where power outlets may not be accessible.

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January 17, 2010  6:14 AM

SolarWinds is offering Free Networking Tools

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

SolarWinds a leading Network Management Software company is offering Free Networking tools, especially the SolarWinds TFTP server is an award winning application. After acquiring Kiwi Syslog, SolarWinds improved its features. Just download the free Networking tools and relax.

Real-Time NetFlow Analyzer

This free desktop tool captures and analyzes NetFlow data so that you can:
• Quickly answer “why’s the network so slow?”
• Identify network top talkers
• Analyze traffic spikes and bandwidth consumption

VM Monitor

Get X-Ray Insight into Your ESX Servers
• Quickly check the health of your VMware ESX Server
• View detailed virtual machine health statistics
• Get visual alerts when performance degradation occurs

Exchange Monitor

Continuously monitor Microsoft® Exchange health, including:
• Exchange services
• Mail queues
• Host server health

Award-Winning TFTP Server

The most robust, widely trusted and easy-to-use TFTP server which enables you to:
• Concurrently upload and download images from multiple devices
• Upload and download configurations to devices
• Transfer files larger than 32MB

Kiwi Syslog Server

A powerful, flexible Syslog Server that’s easy to use:
• Receive and Manage Syslog messages from devices
• Log and Forward Syslog messages based on priority or time of day
• View Syslog messages in multiple windows simultaneously

January 16, 2010  5:44 AM

How to send message to one telnet users from a Cisco Router or Cisco Switch?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

In my last article we know how to send a message to all telnet users in a Cisco Router or a Cisco Switch using “send” command. This command can also use to send a message any particular telnet users. It’s quite simple.

Long in to your Cisco Device and look for current telnet users, by using a “show users” command


ITKESW01#sho users

    Line       User       Host(s)              Idle       Location

   1 vty 0     netmgr     idle                 00:00:49

   2 vty 1     yasir      idle                 00:00:16

*  3 vty 2     yasir      idle                 00:00:00


  Interface      User        Mode                     Idle     Peer Address





If you want to send a message to vty session 1 then do as follows.


ITKESW01#send 1

Enter message, end with CTRL/Z; abort with CTRL/C:

Dear User netmgr please log off as we need to change your password


Send message? [confirm]^Z




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January 12, 2010  5:08 AM

An introduction to some of new features in ASP.Net 4.0 and Visual Studio 2010

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

Recently a good friend of mine published an article which highlights on the some of the new features in ASP.Net 4.0 and Visual Studio 2010.

This article is worth reading, though I am not into ASP.Net or Visual Studio, I enjoyed the article.

The author of this article can be reached at

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