CCNA Day 19 DTP & VTP

What are the two DTP interface modes?

switchport mode dynamic [...]

switchport mode dynamic [...]

auto

desirable

DTP is [...] by default on all Cisco switch interfaces.

enabled

Interfaces on newer Cisco switches default to switchport mode dynamic [...]

auto

Interfaces on older Cisco switches default to switchport mode dynamic [...]

desirable

A switchport in dynamic [...] mode will actively try to form a trunk with other Cisco switches.

desirable

SW1 G0/0 is connected to SW2 G0/0

SW1 G0/0 Administrative mode: dynamic desirable

SW2 G0/0 Administrative mode: dynamic desirable

Operational mode: [...]

trunk

SW1 G0/0 is connected to SW2 G0/0

SW1 G0/0 Administrative mode: dynamic desirable

SW2 G0/0 Administrative mode: trunk

Operational mode: [...]

trunk

SW1 G0/0 is connected to SW2 G0/0

SW1 G0/0 Administrative mode: dynamic desirable

SW2 G0/0 Administrative mode: dynamic auto

Operational mode: [...]

trunk

SW1 G0/0 is connected to SW2 G0/0

SW1 G0/0 Administrative mode: dynamic desirable

SW2 G0/0 Administrative mode: static access

Operational mode: [...]

static access

SW1 G0/0 is connected to SW2 G0/0

SW1 G0/0 Administrative mode: dynamic auto

SW2 G0/0 Administrative mode: trunk

Operational mode: [...]

trunk

SW1 G0/0 is connected to SW2 G0/0

SW1 G0/0 Administrative mode: dynamic auto

SW2 G0/0 Administrative mode: dynamic auto

Operational mode: [...]

static access

SW1 G0/0 is connected to SW2 G0/0

SW1 G0/0 Administrative mode: dynamic auto

SW2 G0/0 Administrative mode: static access

Operational mode: [...]

static access

Configure DTP in desirable mode on a switchport:

SW1(config-if)# [...]

switchport mode dynamic desirable

Configure DTP in auto mode on a switchport:

SW1(config-if)# [...]

switchport mode dynamic auto

Two commands that disable DTP negotiation on a switchport:

SW1(config-if)# switchport mode access

OR

SW1(config-if)# [...]

switchport nonegotiate

Two commands that disable DTP negotiation on a switchport:

SW1(config-if)# switchport nonegotiate

OR

SW1(config-if)# [...]

switchport mode access

In DTP trunk encapsulation negotiation, which encapsulation type is favored?

ISL

When using ISL, which VLAN are DTP frames sent in?

VLAN1

When using 802.1Q, which VLAN are DTP frames sent in?

The native VLAN

[...] allows you to configure VLANs on a central server switch, and other switches (clients) will synchronize their VLAN database to the server.

VTP

What does VTP stand for?

VLAN Trunking Protocol

How many versions of VTP are there?

3

What are the three VTP modes?

Server, client, transparent

Cisco switches operate in VTP [...] mode by default.

server

Cisco switches operate in VTP version [...] by default.

1

VTP servers will increase the [...] every time a VLAN is added/modified/deleted.

revision number

VTP servers [can/can't] add/modify/delete VLANs.

can

VTP clients [can/can't] add/modify/delete VLANs.

can't

VTP transparents [can/can't] add/modify/delete VLANs.

can

VTP servers [will/won't] synchronize their VLAN database with a VTP server with a higher revision number.

will

VTP clients [will/won't] synchronize their VLAN database with a VTP server with a higher revision number.

will

VTP transparents [will/won't] synchronize their VLAN database with a VTP server with a higher revision number.

won't

Does VTPv1 support the extended VLAN range (1006-4094)?

No

Does VTPv2 support the extended VLAN range (1006-4094)?

No

Does VTPv3 support the extended VLAN range (1006-4094)?

Yes

Does a VTP server maintain its VLAN database in NVRAM?

Yes

Does a VTPv1/v2 client maintain its VLAN database in NVRAM?

No

Does a VTP transparent maintain its VLAN database in NVRAM?

Yes

What are two methods to reset the VTP revision number to 0?

[...]

ORChange the VTP mode to transparent.

Change the VTP domain to an unused domain.

What are two methods to reset the VTP revision number to 0?

Change the VTP domain to an unused domain.

OR[...]

Change the VTP mode to transparent.

Does a VTPv3 client maintain its VLAN database in NVRAM?

Yes