Network technologies and trends:

Networking


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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