Vtp V3 Modes - Cisco Nexus 6000 Series Configuration Manual

VTP V3 Modes

• Allows only the primary server to make VTP configuration changes.
• Supports 4K VLANs
• Permits feature-specific primary servers. A switch can be a primary server for a specific feature database
• Provides enhanced security with hidden and secret passwords
• Provides interoperability with private VLANs (PVLAN). PVLANs and VTPs are no longer mutually
VTP Version 3 has the following software restriction:
• User will not be able to create vlan when switch is configured as a VTP client.
• In a VTP domain network, configure all the transparent devices first and then configure the primary
VTP V3 Modes
From Cisco NX-OS Release 7.2(0)N1(1), VTP V3 supports the following modes:
• Transparent—Allows you to relay all VTP protocol packets that it receives on a trunk port to all other
• Server— Allows you to create, remove, and modify VLANs over the entire network. You can set other
• Client— Allows you to create, change, and delete VLANs on the local device. In VTP client mode, a
• Off— Behaves similarly to the transparent mode but does not forward any VTP packets. The off mode
Cisco Nexus 6000 Series NX-OS Layer 2 Switching Configuration Guide, Release 7.x
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like MST or for the entire VLAN database
exclusive.
server to avoid any VLAN sync up issue from the VTP server.
trunk ports. When you create or modify a VLAN that is in VTP transparent mode, those VLAN changes
affect only the local device. A VTP transparent network device does not advertise its VLAN configuration
and does not synchronize its VLAN configuration based on received advertisements. You cannot configure
VLANs 1002 to 1005 in VTP client/server mode because these VLANs are reserved for Token Ring.
configuration options like the VTP version and also turn on or off VTP pruning for the entire VTP
domain. VTP servers advertise their VLAN configuration to other switches in the same VTP domain
and synchronize their VLAN configuration with other switches based on messages received over trunk
links. Beginning with Release 5.1(1), the server mode is the default mode. The VLAN information is
stored on the bootflash and is not erased after a reboot.
switch stores the last known VTP information including the configuration revision number, on the
bootflash. A VTP client might or might not start with a new configuration when it powers up.
allows you to monitor VLANs by using the CISCO-VTP-MIB without having to run VTP. On Cisco
Nexus 7000 Series devices, because VTP is a conditional service, its MIB is loaded only when the
corresponding feature is enabled. The CISCO-VTP-MIB does not follow this convention. It is loaded
by the VLAN manager and will always return the correct values whether the VTP process is enabled or
disabled.
VTP client will move to transparent mode if there is any failure during updating VLAN
Note
database received from server. Following syslog message is displayed on console.
"VTP-2-VTP_MODE_TRANSPARENT_CREATE_SEQ_FAILED: VTP Mode changed to
transparent since VTP vlan create/update failed".
the VTP mode to client to get latest database from server.
Configuring VTP V3
User need to change back