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CCNP Route Switch > VTP > Flashcards

VTP Flashcards

1
Q

What is the purpose of the VTP client advertisement request?

A

It allows a client device to request VTP summary and subset advertisement from the server.

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2
Q

What does the VTP summary advertisement carry?

A

Synchronization information. Domain name, CRN, VTP version, MD5 hash code, timestamp, and the number of subset advertisements to follow.

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3
Q

What does the VTP subset advertisement carry?

A

Updated VLAN information.

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4
Q

What is VTP Pruning?

A

If a VLAN is not present on any ports on a switch, VTP will automatically remove that VLAN from trunks leading to that switch.

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5
Q

VTP version 3 introduced ___, ___. ___ and ___.

A

The “off” mode, the primary server, encrypted passwords and support for all VLANs.

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6
Q

List the VTP versions.

A

Versions 1, 2 and 3. 1 is ran by default.

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7
Q

List the three VTP advertisement types.

A

Summary advertisements, subset advertisements, client advertisement requests.

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8
Q

In VTP, client devices can still make changes when they send a ___.

A

Full summary advertisement.

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9
Q

Define the CRN.

A

Configuration revision number. In VTP, the advertisement with the highest CRN is used. The CRN is incremented on a switch whenever a VLAN change is made.

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10
Q

List the VTP roles.

A

Server, client, transparent, off.

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11
Q

To participate in VTP, devices must be part of the same ___ and have the correct ___.

A

VTP domain and VTP password.

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12
Q

Briefly describe VTP.

A

VLAN trunking protocol. Replicates VLANs across devices in a whole network.

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13
Q

Which command will show VTP config information?

A

Show VTP status

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14
Q

Each switch can only be in one ___.

A

VTP domain.

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15
Q

What VTP version do switches run in by default?

A

VTP version 1.

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16
Q

What is the default VTP domain?

A

“Null”. Will still run VTP.

17
Q

Are VTP domains case sensitive?

A

Yes.

18
Q

Describe the VTP server mode.

A

The switch will send out VTP subset advertisements. Only one serve is allowed in later VTP versions.

19
Q

Describe the VTP client mode.

A

The switch will listen for VTP subset advertisements and update it’s VLANs accordingly.

20
Q

Describe the VTP transparent mode.

A

The switch will ignore VTP packets but will forward them along.

21
Q

Describe the VTP off mode.

A

The switch will ignore VTP packets and will not forward them. Only available in version 3.

22
Q

Will a client switch ever send a VTP advertisement?

A

Yes, when it first boots and enters a domain. This can affect the network.

23
Q

What port types are VTP advertisements sent over?

A

Trunk ports.

24
Q

When is a VTP summary advertisement sent?

A

Every 5 minutes or whenever any changes are made to the VLAN database.

25
Q

What happens when the CRN for an advertisement matches the CRN of the recieving switch?

A

The advertisement will be rejected.

26
Q

The CRN is incremented ___ the VTP advertisement is sent.

A

Before.

27
Q

What are two ways to reset the CRN number?

A

Change the VTP domain to a non-existent domain and then change it back; change the VTP mode to transparent and then back. ALWAYS VERIFY.

28
Q

When are subset advertisements sent?

A

Whenever a change to the VLAN database is made.

29
Q

Can local VLAN changes be made to a VTP mode client device?

A

No, changes can only be made on a server, transparent, or off mode device.

30
Q

When would a VTP client advertisement request be needed?

A

When the client device’s VLAN database is corrupted or deleted.

31
Q

What’s the difference between transparent mode in version 1 and 2?

A

In version 1 transparent mode will only forward VTP advertisements within its own domain, in version 2 transparent mode will forward all VTP advertisements.

32
Q

VTP version 3 allows you to configure VTP on a ___ by ___ basis.

A

Port by port.

33
Q

In VTP versions 1 and 2, which file can the VTP password be viewed in?

A

the VLAN.dat file. This was fixed in VTP version 3.

34
Q

How does VTP version 3 fix the VTP synch issue?

A

With the introduction of the primary server. Only the primary server can make changes to other switch’s VLAN databases.

35
Q

How do you make a switch the primary VTP server?

A

With the “VTP primary” command.

36
Q

Which VLAN are VTP advertisements sent across?

A

The untagged VLAN.

37
Q

Which VTP versions are compatible?

A

VTP versions 2 and 3 are “compatible”. VTP version 1 is not compatible with any other version.

38
Q

What’s the command to enable VTP pruning?

A

“VTP pruning” from global config mode. Can be edited on a port-by-port basis.

CCNP Route Switch (25 decks)

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