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Why are Extended Vlans Used?

IP Networking
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Question added by Shaik Abdul Razzak , IT Director - Cloud and Information Technology , One Global Group
Date Posted: 2015/02/08
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Roy Xavier
by Roy Xavier , devops engineer , Logezy Infotech Pvt Ltd

Extended VLANs are VLANs within the range of1006 to4094. They are mainly used in service provider networks to allow the provisioning of number of customers.

Piotr Konopka
by Piotr Konopka , Specialist Helpdesk / Support Techn. Services / Chief Specialist. Multimedia Support Techn. Services , Telecomunication Poland - Orange Poland

In order to configure an extended VLAN you have to follow the guideline below:

  • Extended VLANs are used just like normal VLANs; only different range.
  • Extended VLANs must be configured on Switches that are in VTP Transparent mode only.
  • Extended VLANs can not be configured using VLAN database mode (only configuration mode).
  • Extended VLANs are saved in the configuration file.

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