Network technologies and trends

February 25, 2009  7:13 PM

Cisco Saudi -Expo 2009 was amazing and helpful

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

As I posted before about the Cisco Saudi – Expo 2009 which was held at King Fahd Cultural Center, Riyadh ,Saudi Arabia on 9 & 10th February 2009. The conference was opened by Dr Mohammed Al-Suwaiyel, President of King Abdullah College of Science and Technology, and a keynote from Dr Badr Al Badr, managing director of Cisco Saudi Arabia.


The two-day event for customers and partners included sessions on a number of emerging technologies, including unified communications, collaboration, managed services, and Cisco’s Connected Home and Smart Education systems.The two-day event for customers and partners included sessions on a number of emerging technologies, including unified communications, collaboration, managed services, and Cisco’s Connected Home and Smart Education systems.



The technical presentations were simply great I would say they were meeting the Networkers standards.

Some of the topics covered as follows which can be downloaded.

A Nation’s Security The Netcentric Response (PDF – 4,153KB)

Carrier Ethernet – Cisco’s Vision and the Alignmnent with the IP NGN.pdf (PDF – 4,221KB)

CCIE new tracks.pdf (PDF – 1,916KB)

CCIE Security.pdf (PDF – 2,661KB)

Change the World – Connected Real Estate.pdf (PDF – 6,035KB)

Cisco Certified Design Expert (CCDE).pdf (PDF – 2,520KB)

Cisco Clinical Collaboration.pdf (PDF -1,573KB)

Cisco Collaboration.pdf (PDF – 4,081KB)

Cisco Connected Real Estate Solutions.pdf (PDF – 6,487KB)

Cisco Digital Media System.pdf (PDF – 3,752KB)

Cisco Services Capitalize on your Network Investment.pdf (PDF – 1,174KB)

Cisco WiMAX E2E Solution Architecture.pdf (PDF – 2,858KB)

Countering the Economic Downturn.pdf (PDF – 1,135KB)

Data center Application Acceleration and Security.pdf (PDF – 7,542KB)

Data Center Architecture Strategy and Planning.pdf (PDF – 6,404KB)

Data Center Virtualization.pdf (PDF – 3,096KB)

Data Leakage Definition, Impact and Prevention.pdf (PDF – 2,162KB)

Deploying IPv6 for Service Providers.pdf (PDF – 2,163KB)

Design and deployment of wireless networks.pdf (PDF – 2,801KB)

Education for a Connected World.pdf (PDF – 7,043KB)

Emerging Threats.pdf (PDF – 3,121KB)

Enterprise Multilayer and Routed Access Campus Design.pdf (PDF – 3,301KB)

Femto Solution Overview.pdf (PDF – 1,893KB)

GMPLS Lambda Aware.pdf (PDF – 2,955KB)

How Video Can Change Our Lives and Lifestyle.pdf (PDF – 3,156KB)

IP Video Surveillance Design and integration.pdf (PDF – 700KB)

IP Video Surveillance introduction.pdf (PDF – 1,125KB)

IPoDWDM 40G, 100G, and Beyond.pdf (PDF -1,211KB)

ISP Security Routing & Switching.pdf (PDF – 829KB)

Layer 2 Attacks and Mitigation T.pdf (PDF – 1,667KB)

Mobility for Retail.pdf (PDF – 2,003KB)

NetVersity.pdf (PDF – 2,277KB)

Operational Firewall and IPS Management Using Cisco Security Manager and Cisco Security MARS.pdf (PDF – 5,018KB)

Policy Control Architecture for Wireline Networks.pdf (PDF – 3,974KB)

Protecting your Goldmine The End Points.pdf (PDF – 3,853KB)

Software as a Service Web 2.0 Solutions.pdf (PDF – 2,349KB)

Tough Economic Times for Your Business Try the Managed Services Antidote.pdf (PDF – 1,166KB)

UC 7.0.pdf (PDF – 2,416KB)



February 25, 2009  11:23 AM

VLAN Trunking Protocol (VTP) Overview – Series 3

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

In Cisco Catalyst® switches the VTP domain can be added through CLI configuration or else it can be learnt from an adjacent VTP Cisco Catalyst® switch. Let’s see this from the below example


Switch C is added to the network connecting via a trunk port to Switch B with no VTP domain configured, in this mode when the Switch C receives the first VTP update from the adjacent Switch B , it will become the part of the VTP domain ITKE as identified in the VTP update.

February 25, 2009  5:34 AM

Cisco’s innovative EnergyWise technology improves Green Practices

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

If you all are looking for a complete green solution for your Data Center using Cisco Catalyst® switches, there is good news with Cisco EnergyWise software.  The most interesting fact of the innovative Cisco EnergyWise technology for Cisco Catalyst® switches that measures, reports and reduces the energy consumption of Internet Protocol (IP) devices such as phones, laptops and access points. Cisco also announced industry partner solutions along with an intelligent middleware acquisition that will ultimately enable the management of power consumption for entire building systems such as lights, elevators, and air conditioning and heating.

[kml_flashembed movie="" width="425" height="350" wmode="transparent" /]


  • Cisco EnergyWise was purpose-built in alignment with Cisco’s vision of how networking technology can support a low-carbon economy, cut energy use and promote overall environmental sustainability.
  • Cisco EnergyWise is part of the company’s technology roadmap for changing the value-chain of information technology (IT) by placing the intelligent network squarely at the center of how companies reduce greenhouse gas (GhG) emissions across their entire organization.
  • Cisco EnergyWise will roll out in three phases to improve IT and building system energy utilization:
    • In the first phase (February 2009), Network Control, Cisco EnergyWise will be supported on Catalyst switches and manage the energy consumption of IP devices such as phones, video surveillance cameras and wireless access points.
    • In the next phase (Summer 2009), IT Control, there will be expanded industry support of EnergyWise on devices such as personal computers (PCs), laptops and printers.
    • In the final phase (Early 2010), Building Control, Cisco EnergyWise will be extended to the management of building system assets such as heating, ventilation and air conditioning (HVAC), elevators, lights, employee badge access systems, fire alarm systems and security systems.
  • Cisco EnergyWise provides real-time, granular measurement capabilities to give chief information officers better visibility into energy savings across an entire organization as well as specific places in the network such as the campus, branch office and data center .
  • Cisco EnergyWise supports currently deployed Catalyst switches worldwide with a free software upgrade and new Catalyst switches beginning in February 2009.
  • Cisco is working with Schneider Electric for building utility management, SolarWinds for network monitoring, and Verdiem for monitoring PC power in order to extend EnergyWise as a platform for power management across IT and the building systems of an organization by early 2010.
  • Cisco also announced the acquisition of Richards-Zeta’s intelligent middleware to provide simplified and cost-effective interoperability and integration between building infrastructure, IT applications and Cisco EnergyWise.
  • The new Cisco Green Business Value Calculator provides customers with projected cost and GhG emission-saving results from adopting Cisco EnergyWise and other green technologies such as Cisco TelePresenceTM, Cisco WebExTM and Cisco Unified Communications.
  • Cisco also introduced adaptive power management functionality in the Cisco Wireless Control System to save power by enabling customers to turn off redundant radios during off hours.

Supporting Quotes:

  • “Cisco believes that information technology has the power to transform the way the world manages its environmental and energy challenges. With EnergyWise, Cisco is uniquely positioned to help our customers gain a networkwide view of energy consumption that encompasses not only device-level power, but in the future entire network efficiency, building operations and business practices across an entire organization,” said Judy Lin, senior vice president of the Ethernet Switching technology group for Cisco.
  • “With the organizationwide visibility that Cisco EnergyWise provides, we anticipate potential annual reduced energy savings of 15 to 20 percent conservatively across our portfolio of commercial office buildings. This could equate to energy savings of 19 to 33 cents a square foot, which over the course of a year could be thousands of dollars in energy related savings,” said Jeff Ton, vice president of IT for Lauth Property Group.
  • “As a global specialist in energy management, we help our customers to make the most of their energy,” said Jean-Pascal Tricoire, CEO of Schneider Electric. “Today, through the monitoring and control of energy usage with energy efficiency products, Schneider Electric’s solutions deliver up to 30 percent energy savings to residential, commercial and industrial buildings. Using the network as a platform through Cisco EnergyWise, we will be able to bring additional reductions in energy consumption, offering our customers an efficient, simple, and reliable infrastructure.”
  • “With SURVEYOR, Verdiem’s commitment to reducing the environmental impact of technology has already helped our customers save up to 60 percent of their PC networks’ energy consumption. Verdiem is proud to be working towards a Cisco EnergyWise enterprise network energy management agreement because not only is EnergyWise good corporate citizenship, but in the future it will also help improve business performance and most importantly, gives corporations a reliable way to meet their sustainability goals,” said Jeremy Jaech, Verdiem’s CEO.
  • “SolarWinds provides powerful, simple and affordable network management solutions to thousands of IT organizations around the world. Within the year, the integration of Cisco EnergyWise and SolarWinds Orion Network Performance Monitor will allow network engineers to easily manage energy use alongside the other metrics they monitor on a daily basis,” said Kenny Van Zant, chief product strategist.

Supporting Resources:

February 23, 2009  6:35 AM

VLAN Trunking Protocol (VTP) Overview – Series 2

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

In my previous post I just introduced the VLAN trunking protocol; let’s talk about the VTP domain.

The VTP domain consists of a group of logical group of Cisco Catalyst Switches that are part of the same VTP management domain. A  Cisco Catalyst Switch can belong only to one VTP domain at any time,



The VTP domain is a logical group of switches that will share VLAN information. Each switch can belong only to one VTP domain in addition to sharing the VLAN information with all other Cisco Catalyst Switches in the same VTP domain. Cisco Catalyst Switches in different VTP domains drops any VTP updates received from Cisco Catalyst Switches.

February 21, 2009  6:21 AM

VLAN Trunking Protocol (VTP) Overview – Series 1

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

What is a VLAN Trunking Protocol (VTP)?

VLAN Trunking Protocol (VTP) is a Cisco proprietary Layer 2 messaging protocol that manages the addition, deletion, and renaming of VLANs for the Cisco Catalyst Switches in the same VLAN Trunking Protocol (VTP) domain.  VLAN Trunking Protocol (VTP) enables Cisco Catalyst Switches to exchange and maintain consistent VLAN information amongst a group of Cisco Catalyst Switches.


For example, information for the VLAN 50 defined in Cisco Catalyst Switch A is propagated via VTP updates to all other Cisco Catalyst Switches (Switches B, C and D) in the same VTP domain, the other Cisco Catalyst Switches B, C and D will all end up adding VLAN 50 in their local VLAN data base. VTP is available on most of the Cisco Catalyst Family products.

The comparable IEEE standard in use by other manufacturers is GVRP.

February 19, 2009  2:03 PM

CCNA, Administrative Distance for the Dynamic Routing Protocols

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

If you are preparing for your CCNA then it’s better to know about the dynamic routing protocols.  Cisco Routers support many dynamic routing protocols for learning routes in a complex network topology. The routing protocols supported are the following:

*       RIP

*       OSPF

*       BGP

*       IS-IS

*       IGRP

*       EIGRP

Each routing protocol has its own Administrative Distance (AD), which is a value representing the trustworthiness of the specific routing protocol. If a router learns a destination route from two or more routing protocols, it selects the route from the protocol having the smallest Administrative Distance.

The below table shows the default Administrative Distance (AD) values for each routing protocol:

Routing Protocol

AD Value



















Now, if the router learns a specific destination route from both OSPF and RIP, it will select the route learned from OSPF because this protocol has a smaller AD compared to RIP (110 instead of 120).

February 19, 2009  10:32 AM

Cisco Catalyst Switches withPoE

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

 Catalyst switches with PoE are available as 10/100 PoE or  10/100/1000 PoE. The Power over Ethernet feature is an excellent option for deployments of Cisco IP Phones. Wireless access points and IP  cameras can also be powered by PoE switches. The specific technology uses the Cat5/Cat6/Cat 6e UTP/STP cable to deliver power in addition to data, thus removing the need of using power adaptors for devices.

The following Cisco Models support PoE:

  • 2960
  • 3750
  • 3560
  • 4500
  • 6500
  • Nexus 7000

February 18, 2009  9:33 AM

Cisco Etherchannel Overview and how it can be configured in Cisco Catalyst Switches – Series 9

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

Dear Friends

 Here we go,we are coming to the conclusion of the Ether channel series, I my self learned a lot and enjoyed while writing posts. Hope some of you are benifited from this series. Just before concluding this series,  I would stongly recommend you guys to check this wonderful quick learning module from Cisco Systems. which foucses on layer-2-design which might be helpful to you guys.

February 17, 2009  11:33 AM

Sharpen Your IP Subnetting Skills!

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

Dear Certification Aspirers. Do you want to sharpen your IP subnetting skills?  If so what an oppurtunity to play and learn the certification learning game from Cisco; the Subnet Troubleshooting game; the latest addition to the Cisco line of learning games. Visit the Cisco Learning Network Games Arcade for more information.


[Visit CLN Games Arcade]

February 7, 2009  5:52 AM

Cisco Etherchannel Overview and how it can be configured in Cisco Catalyst Switches – Series 8

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

Now we are reaching towards the end of this series, one more post to go.  

Let’s proceed further and we will see how to configure a Layer 3 Etherchannel using the PAgp Protocol (Port Aggregation Protocol) in Cisco Catalyst Switches.

Here is the scenario which we will follow


From the above diagram we have two Cisco 3560 Catalyst Switches named ITKESW01 and ITKESW02.

We will configure a Layer 3 Etherchannel between the Cisco 3560 Catalyst Switches  ITKESW01 and ITKESW02. The  Giga Ethernet ports 0/45, 0/46/,0/47 & 0/48 on a Cisco 3560 Catalyst Switches  ITKESW01 are connected to Giga Ethernet ports 0/1,0/2,0/3 and 0/in Cisco 3560 Catalyst Switch  ITKESW02.


The configuration is as follows


Configuration in the Cisco 3560 Catalyst Switch  ITKESW01


ITKESW01#config t

ITKESW01(config)# interface port-channel 1

ITKESW01(config-if)# no switchport

ITKESW01(config-if)# no shutdown

ITKESW01(config-if)# ip address

ITKESW01(config-if)# end


ITKESW01#config t

ITKESW01(config)# interface range gigabitEthernet 0/45 – 48

ITKESW01(config-if-range)# no switchport

ITKESW01(config-if-range)# no ip address

ITKESW01(config-if-range)# channel-group 1 mode desirable


Note: This example shows how to configure Gigabit Ethernet ports 0/45 – 0/48   into port channel 1 with PAgP mode desirable

Note: The “no switchport” command is required to change interface from layer2 to layer3 mode.


Configuration in the Cisco 3560 Catalyst Switch  ITKESW02

ITKESW02#config t

ITKESW02(config)# interface port-channel 1

ITKESW02(config-if)# no switchport

ITKESW02(config-if)# no shutdown

ITKESW02(config-if)# ip address

ITKESW02(config-if)# end


ITKESW02#config t

ITKESW02(config)# interface range gigabitEthernet 0/1 – 4

ITKESW02(config-if-range)# no switchport

ITKESW02(config-if-range)# no ip address

ITKESW02(config-if-range)# channel-group 1 mode auto


Note: This example shows how to configure Gigabit Ethernet ports 0/1 – 0/4   into port channel 1 with PAgP mode auto


Note: The “no switchport” command is required to change interface from layer2 to layer3 mode.


Do use  “show etherchannel” command to display port-channel information after configuration and remember to save the configuration.

Forgot Password

No problem! Submit your e-mail address below. We'll send you an e-mail containing your password.

Your password has been sent to: