Tag: VLAN

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

02

Jan2014

What are VTP Modes and how is it advertised?

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There are three modes of operation for VLAN Trunking Protocol (VTP) Server allows creation, modification, and deletion VLANs and specify other configuration parameters, such as VTP version and VTP pruning, for the entire VTP domain. VTP servers advertise their VLAN configuration to other switches in the same VTP domain and synchronize their ... Read More
January 2, 2014Praveen Bahethi

28

Dec2013

Why do we use VLANs?

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Virtual Local Area Networks (VLAN) came about from the need to isolate broadcast domains with in a switch without using routers.  Router do not forward broadcasts, but back in the 90's they were not very fast compared to switches.  Router Layer 3 functions were done in processor and switch Layer ... Read More
December 28, 2013Praveen Bahethi