Tag: switching

12

Jan2014

What is Ethernet?

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Ethernet was developed by Robert Metcalfe at Xerox PARC in the early 70s and is a packet switching technology that uses Carrier Sense Mulit-access with Collision Detection (CSMA/CD). Carrier Sense The device (Network Inteface Card) determines if the media (wire) is available, no electrical signalling we can transmit. Multi-access All devices can sense the ... Read More
January 12, 2014Praveen Bahethi

11

Jan2014

What is 802.1D Spanning Tree Protocol?

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Spanning Tree Protocol (STP) was created to allow for loop-free topologies in switch architectures.  Prior to STP,  any switch architecture that had a loop would end up with duplicate frames flooding between switches causing an outage.  Radia Perlman’s algorithm resolved the physical loop by creating a logical blocking solution stopping ... Read More
January 11, 2014Praveen Bahethi

10

Jan2014

How to configure VLANs with different VTP modes?

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We are going to show how VLANs are created in VTP server and propagated to other switches and how to stop the propagation, if required. The switches are in a triangle with switchA as root of the STP and configured with hostnames and ip addresses allowing us to remotely access them ... Read More
January 10, 2014Praveen Bahethi

07

Jan2014

How does one configure Department or Geographical VLANs?

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VLANs are used to create separate groupings of devices.  Prior to VLANs, all the devices had to be on the same switch -  users, printers and servers needed to be together had to be physically colocated.  Most often VLANs were used to separate departments, but than can be used geographically. Acme ... Read More
January 7, 2014Praveen Bahethi