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CCNA Semester 3
Chapter 4 - VTP
25
Computer Networking
Undergraduate 1
04/21/2013

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Term
What is the purpose of VTP?
Definition
To make the management of VLANs easier by allowing switches to learn about VLANsfrom each other.
Term
What sort of link between switches is needed to transmit VTP advertisements?
Definition
A trunk link.
Term
What are the three VTP modes that a switch could take?
Definition
Server, client and transparent.
Term
What name is given to a group of switches that share VLAN information using VTP?
Definition
A VTP domain.
Term
Which VTP modes allow switches to save VLAN information in the vlan database?
Definition
Server mode switches store VLAN information for their domain. Transparent modeswitches store information about their own VLANs.
Term
Which VTP versions can be used on a Catalyst 2950 switch, and which is the defaultversion?
Definition
Versions 1 and 2 can be used. Version 1 is the default. There is a version 3 that can beused on some switches, but no on the Catalyst 2950.
Term
How is a VTP domain identified?
Definition
By its domain name.
Term
Which command is commonly used to display information about VTP?
Definition
Show vtp status
Term
How is a VTP message encapsulated?
Definition
It is encapsulated inside an Ethernet frame that is tagged using 802.1Q or ISL.
Term
What destination MAC address is used for VTP messages?
Definition
The multicast address 01-00-0C-CC-CC-CC
Term
What does a server switch do to the configuration revision number when a new VLAN is added?
Definition
Increases it by 1.
Term
What is the purpose of including the configuration revision number in a VTP advertisement?
Definition
It shows the receiving switch whether the advertisement contains more up to dateinformation than the information that it already has.
Term
Which type of VTP advertisement contains information about VLANs?
Definition
The subset advertisement.
Term
A transparent switch receives a summary advertisement. What does it do?
Definition
It will forward the summary advertisement to other switches but ignore its contents.
Term
Which modes of switch will allow you to create new VLANs?
Definition
Server switches (for the domain) and Transparent switches (for local use only).
Term
Is it possible to have more than one server switch on a domain?
Definition
Yes. It is a good idea to have more than one server. If there was only one server and it failed, then the VLAN information would be lost.
Term
Is a transparent switch able to obtain VLAN information when it reboots?
Definition
If the switch has any VLANs configured then they will be saved in the switch’s ownVLAN database, and they will be retrieved. The switch stays in transparent mode(assuming that the configuration has been saved.)
Term
Does any VLAN configuration have to be carried out on a client switch?
Definition
Switchports need to be assigned to VLANs. This is not done centrally, but is done oneach switch.
Term
What is the effect of giving the vtp pruning command on a server switch?
Definition
VTP pruning is enabled for the whole domain. VLAN flood traffic will be sent only whereit is needed – in the direction of devices on that VLAN.
Term
What happens to the vtp configuration revision number of a switch if you change its vtp domain name?
Definition
It is reset to the default value of 0.
Term
Why might you want to change the domain name of a switch temporarily before adding it to an existing VTP domain?
Definition
If the new switch has a configuration revision number of 0 then there is no danger of thenew switch altering the VLAN information in the VTP domain and updating it with the wrong information.
Term
Which should you do first on a server, configure the VTP domain name or create the VLANs?
Definition
Configure the domain name first because this will remove existing VLANs.
Term
Which command will make a switch into a VTP client?
Definition
vtp mode client
Term
If VTP is not working correctly, what should you check?
Definition
VTP Version. It needs to be the same on all switches in the domain.Domain name. Is it exactly the same on all switches? VTP Password if any. Is it exactly the same on all switches? Check that there is at least one server. Better to have at least two.If you recently added a new switch, had its revision number been set to 0?
Term
Is it possible to have a VTP domain where all the switches are in server mode?
Definition
YES
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