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Networking


February 2, 2015  7:50 PM

Passed CCIE Routing & Switching Lab Exam

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
CCIE

By the grace of Almighty I passed the CCIE Routing and Switching lab exam. I have been preparing for this for almost a year and was vigorously working hard for past four months. The preparation kept me away from blogging for almost a year. My dream to peruse CCIE Routing and Switching has turned...

December 6, 2014  5:21 AM

VIRL is officially launched

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
Networking

The much awaited Cisco’s network simulation software Virtual Internet Routing Lab (VIRL) is available for all. It can be purchased from VIRL Website. We all know when it comes to practice for CCNP, CCIE or any other Cisco certifications we think of having some...


October 14, 2014  6:42 AM

What is Route Dampening?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
Networking

In order to reduce the propagation of unstable routes also known as flapping routes, in BGP Protocol one can use the BGP feature called Route dampening. A route is considered to be flapping when its availability alternates repeatedly. Since BGP routing tables are huge, it’s not practical send...


October 2, 2014  5:31 AM

A review for “CCIE Routing and Switching v5.0 Official Cert Guide Vol 1”

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
CCIE

I have been waiting eagerly and patiently for the release of the title CCIE Routing and Switching v5.0 Official Cert Guide Vol 1 from Cisco Press. There were two reasons behind my...


January 27, 2014  11:22 AM

Cisco announces new CCNP Security Curriculum

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
Networking

Cisco with draws current CCNP Security curriculum by announcing the new set of Cisco CCNP Security exams namely 300-206 SENSS, 300-207 SITCS, 300-208 SISAS and 300-209...


January 17, 2014  10:42 AM

Are Catalyst 6800 Series Switches going to rule campus backbone like Cisco Catalyst 6500 Series switches

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
Networking

Yesterday Cisco announced that they started shipping out their newly introduced Catalyst 6800 Series Switches. Currently they are shipping the Cisco Catalyst 6807-XL and 6880-X Switches. We all know when it comes to Campus backbone switches Cisco Catalyst...


December 13, 2008  6:27 AM

How to configure an interface to default settings in a Cisco Switch or a Cisco Router?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
Cisco, Cisco Routers, Cisco switches

This is a cool command to erase just the configuration for a particular interface in a Cisco Switch or a Cisco Router.

In the following example we will configure the...


August 24, 2008  6:20 AM

How to reset the Cisco Catalyst Switch to Factory Defaults

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
Cisco, Cisco switches

To reset the Cisco Catalyst switches to factory defaults, you need access to the Cisco Catalyst Switch console through either a physical console or a Telnet connection. You also need the console/enable passwords. If you forget the console and enable password of your Cisco Catalyst Switch , you...


August 16, 2008  11:12 AM

How to change an IP address in a HP Procurve Switch

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
HP ProCurve, IP address

Changing an IP address in a Cisco Switch is quite simple, where as in HP Procurve Switches if you try to change an IP address for any existing VLAN you get an error message: The IP address (or subnet) 10.0.0.122/23 already exists.. I will demonstrate how to change an IP address for an existing...


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