Unit 1: Network Infrastructure
This will allow you to demonstrate your networking skills, knowledge, and abilities, with a focus on enterprise-level switching, routing, and multicast components that support cross-platform (inter)operability and integration with the most recent software-defined technologies.
VTPv3 is an extension and improvement of the capability of VTP, which was present in earlier versions. There are three primary areas in which the operation of VTP has been improved:
- Administrative control that is more secure: Only a device that has been predefined is permitted to update the VLAN topology
- Extended Features: VTPv3 allows for the advertisement of private VLAN information as well as extended range.
- This version of VTP has the support for MST
VTPv3 still works the same way as earlier versions. A trunk is the only way to send a VTP update message. Access ports or Layer 3 connections can’t handle them. Devices that are in the same VTP domain can only process & exchange the VTP information.
Before, a new switch that had the domain name NULL as its default used the domain name of the first VTP message it got. This practice has changed since VTP version 3, which needs to be set up by hand before it can be used.
Switch(config)#vtp version 3
Switch(config)#vtp domain NW
Also set the spanning-tree expanded system-id if you haven’t already.
Switch(config)#spanning-tree extend system-id
If the domain name in a VTP message doesn’t match, the message will be rejected.
There is built-in backward compatibility in VTP version 3 since the functional base is left unaltered from VTP version 2. Devices running VTP version 2 can be automatically discovered and supported on a per-link basis.
It is possible to advertise many databases or instances with VTPv3 because of its modular design.
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