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Private VLAN Communications Between Ports -
Promiscous Ports
Can talk to primary vlan ports YES
Can talk to community vlan ports YES
Can talk to isolated vlan ports YES
Private VLAN Communications Between Ports -
host ports
Primary vlan ports - N/A
Community vlan ports - YES
Isolated vlan ports - NO
Private VLAN Communications Between Ports -
secondary vlan
Primary vlan ports - N/A
Community vlan ports - NO
Isolated vlan ports - NO
VTP Modes and Features -
Server Mode
* Originates VTP ads
* Processes received ads to update VLAN config
* Forwards received VTP ads
* Saves VLAN config in NVRAM or vlan.dat
* Can create, modify, or delete VLANS using config commands
VTP Modes and Features -
Client Mode
* Originates VTP ads
* Processes received ads to update VLAN config
* Forwards received VTP ads
* Saves VLAN config in NVRAM or vlan.dat
VTP Modes and Features -
Transparent Mode
* Forwards received VTP ads
* Saves VLAN config in NVRAM or vlan.dat
* Can create, modify, or delete VLANs using config commands.
VTP Config Options -
Domain
Sends domain name in VTP updatres.  Received VTP update is ignored if it does not match a switch's domain name.  One VTP domain name per switch is allowed.
VTP Config Options -
Password
Used to generate an MD5 hash that is included in VTP updates.  Received VTP updates are ignored if the passwords on the sending and receiving switch do not match.
VTP Config Options -
Mode
Sets server, client, or transparent mode on the switch.
VTP Config Options -
Version
Sets version 1 or 2.  Servers and clients must match version to to exchange VLAN config data.  Transparent mode switches at version 2 forward version 1 or version 2 VTP updates.
VTP Config Options -
Pruning
Enables VTP pruning, which prevents flooding on a per-VLAN basis to switches that do not have any ports configured as members of that VLAN.
VTP Config Options -
Interface
Specifies the interface whose IP address is used to identify this wtich in VTP updates.
Valid VLAN Numbers, Normal and Extended -
0
Reserved, N/A for pruning and advertising, Not available for use.
Valid VLAN Numbers, Normal and Extended -
1
Normal vlan, cannot be pruned, On Cisco switches, the default VLAN fr all access ports; cannot be deleted or changed.
Valid VLAN Numbers, Normal and Extended -
2-1001
Normal vlan, can be pruned, no comments.
Valid VLAN Numbers, Normal and Extended -
1002-1005
Normal vlan, cannot be pruned, Defined specifically for use with FDDI and TR translational bridging.
Valid VLAN Numbers, Normal and Extended -
1006-4094
Extended vlans, cannot be advertised and pruned by VTP versions 1 and 2.
VTP Server Mode
* Normal range vlans can be config'd from both VLAN database and config modes.
* Extended range VLANS cannot be configured.
* VTP and normal-range VLAN config stored in vland.dat in Flash
VTP Transparent Mode
* Normal range vlans can be config'd from both VLAN database and config modes.
* Extended range VLANs can be config'd from config mode only.
* VTP and normal-range VLAN config stored in both vlan.dat in Flash and running configuration
* Extended range VLAN config stored in running config only.
 
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