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CCNA3 Exploration Chapter 4. Study questions. Answers

4.1

What is the purpose of VTP

To make the management of VLANs easier by allowing switches to learn about VLANs from each

other.

What sort of lin! "etween swit#hes is needed to trans$it VTP ad%ertise$ents

A trunk link.

What are the three VTP $odes that a swit#h #ould ta!e

Server, client and transparent.

What na$e is &i%en to a &roup of swit#hes that share V'AN infor$ation usin& VTP

A VT domain.

Whi#h VTP $odes allow swit#hes to sa%e V'AN infor$ation in the %lan data"ase

Server mode switches store VLAN information for their domain. Transparent mode switches storeinformation about their own VLANs.

Whi#h VTP %ersions #an "e used on a Catalyst ()*+ swit#h, and whi#h is the default %ersion

Versions ! and " can be used. Version ! is the default. There is a version # that can be used on

some switches, but no on the $atalyst "%&'.

-ow is a VTP do$ain identified

(y its domain name.

Whi#h #o$$and is #o$$only used to display infor$ation a"out VTP

Show vtp status

-ow is a VTP $essa&e en#apsulated

)t is encapsulated inside an *thernet frame that is tagged using +'".! or )SL.

What destination AC address is used for VTP $essa&es

The multicast address '!-''-'$-$$-$$-$$

What does a ser%er swit#h do to the #onfi&uration re%ision nu$"er when a new V'AN is added

)ncreases it by !.

What is the purpose of in#ludin& the #onfi&uration re%ision nu$"er in a VTP ad%ertise$ent

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)t shows the receiving switch whether the advertisement contains more up to date information thanthe information that it already has.

Whi#h type of VTP ad%ertise$ent #ontains infor$ation a"out V'ANs

The subset advertisement.

-ow often does a swit#h send out su$$ary ad%ertise$ents

*very minutes, or when the VLAN configuration is changed.

A #lient swit#h is reset. -ow does it o"tain V'AN infor$ation

)t does not have any vlan database of its own, so it needs to obtain VLAN information from aserver switch in its domain. )t sends out a VT re/uest advertisement and receives information ina subset advertisement from the server.

A #lient swit#h re#ei%es a su$$ary ad%ertise$ent with a lower #onfi&uration re%ision nu$"er than

its own. What does it do

)t will forward the summary advertisement to any other switches, but do nothing else about it.There is no newer VLAN information available.

A #lient swit#h re#ei%es a su$$ary ad%ertise$ent with a hi&her #onfi&uration re%ision nu$"erthan its own. What does it do

)t sends out a VT re/uest advertisement and receives information in a subset advertisement fromthe server.

A transparent swit#h re#ei%es a su$$ary ad%ertise$ent. What does it do

)t will forward the summary advertisement to other switches but ignore its contents.

Whi#h $odes of swit#h will allow you to #reate new V'ANs

Server switches 0for the domain1 and Transparent switches 0for local use only1.

1s it possi"le to ha%e $ore than one ser%er swit#h on a do$ain

2es. )t is a good idea to have more than one server. )f there was only one server and it failed, then

the VLAN information would be lost.

1s a transparent swit#h a"le to o"tain V'AN infor$ation when it re"oots

)f the switch has any VLANs configured then they will be saved in the switch3s own VLANdatabase, and they will be retrieved. The switch stays in transparent mode 0assuming that theconfiguration has been saved.1

2oes any V'AN #onfi&uration ha%e to "e #arried out on a #lient swit#h

Switchports need to be assigned to VLANs. This is not done centrally, but is done on each switch.

What is the effe#t of &i%in& the vtp pruning#o$$and on a ser%er swit#h

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VT pruning is enabled for the whole domain. VLAN flood traffic will be sent only where it isneeded 4 in the direction of devices on that VLAN.

What happens to the %tp #onfi&uration re%ision nu$"er of a swit#h if you #han&e its %tp do$ainna$e

)t is reset to the default value of '.

Why $i&ht you want to #han&e the do$ain na$e of a swit#h te$porarily "efore addin& it to anexistin& VTP do$ain

)f the new switch has a configuration revision number of ' then there is no danger of the newswitch altering the VLAN information in the VT domain and updating it with the wronginformation.

Whi#h should you do first on a ser%er, #onfi&ure the VTP do$ain na$e or #reate the V'ANs

$onfigure the domain name first because this will remove e5isting VLANs.

Whi#h #o$$and will $a!e a swit#h into a VTP #lient

vtp mode client

1f VTP is not wor!in& #orre#tly, what should you #he#!

VT Version. )t needs to be the same on all switches in the domain.6omain name. )s it e5actly the same on all switches7VT assword if any. )s it e5actly the same on all switches7$heck that there is at least one server. (etter to have at least two.

)f you recently added a new switch, had its revision number been set to '7

1s it possi"le to ha%e a VTP do$ain where all the swit#hes are in ser%er $ode

2es.

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