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CCNA 640-802 Ch.9
VLAN's
30
Computer Networking
Professional
03/14/2013

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Term
What is ISL?
Definition
Inter-switch Link:CISCO propriety protocol. Ito works at layer 2 by encapsulating the frame with a new header and CRC
Term
What is 802.1Q?
Definition
IEEE Standard for all switches. Must be used if using a non cisco switch. Inserts a fieed within the Frame that ID's the VLAN.
Term
What is VTP?
Definition
VLAN Trunking Protocol:Allows easier managibility of VLANS within switched internetwork. All switches must use trunk ports for information to flow across switch links
Term
What are three recommendations for VTP?
Definition
-Same VTP Domain name on all switches
-One of the switches has to be configured as a server.
-No Router is necessary
Term
What is the Server Mode of Operation?
Definition
This is the default mode for all switches. Atleast one switch has to be a server within the domain.
Term
Where are VLAN Configs saved in Server Mode?
Definition
NVRAM
Term
What is the Client Mode of Operation
Definition
Switches receive information from VTP Servers. They also send and receive updates. They cannot change, delete, or add VLAN's.
Term
What is the Transparent Mode of Operation?
Definition
Switches dont participate in VTP in this mode. They can add, delete and chagne their vlans bc they hold their own database. They also forward information.
Term
When can VLANS 1005 and higher be created?
Definition
When the switch is in transparent mode only.
Term
What is VTP Pruning?
Definition
Switches send broadcasts on trunk links only to switches that need the information. VTP Pruning is disabled by default.
Term
Which VLAN can VTP Pruning not be enabled on?
Definition
VLAN 1...because it is a management VLAN.
Term
What is the command to enable pruning on VLAN's 3 & 4?
Definition
switch(config-if)#switchport trunk pruning vlan 3-4
Term
What does "Router on a stick" mean?
Definition
One router connects through one interface to allow multiple vlans to communicate.
Term
What is the series of commands to create a vlan names sales
Definition
switch(config)#vlan 2
switch(config-vlan)#name sales
Term
What VLANS are reserved and cannot be chagnes, deleted, or renamed?
Definition
1002-1005
Term
What is the commands to change a port to a access port and assign it to VLAN 3
Definition
switch(config-if)#switchport mode access
switch(config-if)#switchport access vlan 3
Term
What is the series of commands to trunk a port?
Definition
switch(config-if)#switchport mode trunk
switch(config-if)#switchport trunk encap dot1q
Term
What is the command to allow certain vlans?
Definition
switch(config-if)#switchport trunk allowed vlan 4-8
Term
What is the command to allow all vlans if one was removed?
Definition
switch(config-if)switchport trunk allowed vlan all
Term
What must be done in order to use the native vlan feature?
Definition
The trunk on each side must have a native vlan specified.
Term
What kind of interface allow inter-VLAN routing from a router?
Definition
Sub-interfaces
Term
What are the series of commands to enable intervlan routing on a router?
Definition
router(config)#interface fa0/0
router(config-if)#no shut
router(config-if)interface fa0/0.1
router(Config-if)encap dot1q 1
router(config-if)ip address x.x.x.x x.x.x.x
Term
What is the command to set an IP address on a switch?
Definition
switch(config)#int vlan 1
switch(config-int)no shut
switch(config-int) ip address x.x.x.x x.x.x.x
Term
What are the series of commands to configure VTP?
Definition
switch(config)#vtp mode server
switch(config)#vtp domain thisthat
switch(config)#vtp password todd
switch(config)#do sh vtp status
Term
What is the command to enable a switchport for voice?
Definition
switch(config-if)switchport voice vlan
Term
What should be enabled prior to configuring voice vlans
Definition
Enable QoS
Enable CDP
Term
What is the command to enable QoS?
Definition
switch(config)#mls qos
Term
What is enabled automatically when a port is configured on the voice vlan
Definition
Portfast is enabled automatically.
Term
What VTP mode can onl accept VLAN information and not change it?
Definition
Client Mode
Term
What does trunking provide?
Definition
Allows ports to connect to multiple vlans at one time
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