16 - DTP/VTP Flashcards
[…] allows you to configure VLANs on a central server switch, and other switches (clients) will synchronize their VLAN database to the server.
VTP
[…] is a Cisco proprietary protocol that allows Cisco switches to dynamically determine their interface status (access or trunk) without manual configuration.
DTP
A switchport in dynamic […] mode will actively try to form a trunk with other Cisco switches.
desirable
A switchport in dynamic […] mode will NOT actively try to form a trunk with other Cisco switches.
auto
Cisco switches operate in VTP […] mode by default.
server
Cisco switches operate in VTP version […] by default.
1
Configure DTP in auto mode on a switchport:
SW1(config-if)# […]
switchport mode dynamic auto
Configure DTP in desirable mode on a switchport:
SW1(config-if)# […]
switchport mode dynamic desirable
Does a VTP server maintain its VLAN database in NVRAM?
Yes
Does a VTP transparent maintain its VLAN database in NVRAM?
Yes
Does a VTPv1/v2 client maintain its VLAN database in NVRAM?
No
Does a VTPv3 client maintain its VLAN database in NVRAM?
Yes
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
DTP is […] by default on all Cisco switch interfaces.
enabled
How many versions of VTP are there?
3
In DTP trunk encapsulation negotiation, which encapsulation type is favored?
ISL
Interfaces on newer Cisco switches default to switchport mode dynamic […]
auto
Interfaces on older Cisco switches default to switchport mode dynamic […]
desirable
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
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 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: 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: static access
Operational mode: […]
static access
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
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
VTP clients [can/can’t] add/modify/delete VLANs.
can’t
VTP clients [will/won’t] synchronize their VLAN database with a VTP server with a higher revision number.
will
VTP servers [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 servers will increase the […] every time a VLAN is added/modified/deleted.
revision number
VTP transparents [can/can’t] add/modify/delete VLANs.
can
VTP transparents [will/won’t] synchronize their VLAN database with a VTP server with a higher revision number.
won’t
What are the three VTP modes?
Server, client, transparent
What are the two DTP interface modes?
switchport mode dynamic […]
switchport mode dynamic […]
auto
desirable
What are two methods to reset the VTP revision number to 0?
[…]
OR
Change 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.
What does DTP stand for?
Dynamic Trunking Protocol
What does VTP stand for?
VLAN Trunking Protocol
When using 802.1Q, which VLAN are DTP frames sent in?
The native VLAN
When using ISL, which VLAN are DTP frames sent in?
VLAN1