VTP协议模式有几种？
- 提问者网友：謫仙
- 2021-06-02 22:12
- 五星知识达人网友：冷風如刀
- 2021-06-02 22:28
Server 服务器模式
Client 客户端模式
Transparent 透明模式（即不是客户端也不是服务器）
- 1楼网友：鱼芗
- 2021-06-03 00:02
VTP operates in one of three modes:
- Server – In this VTP mode you can create, remove, and modify VLANs. You can also set other configuration options like the VTP version and also turn on/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. VTP server is the default mode. The VLANs information are stored on NVRAM and they are not lost after a reboot.
- Client – VTP clients behave the same way as VTP servers, but you cannot create, change, or delete VLANs on the local device. In VTP client mode, VLAN configurations are not saved in NVRAM.
- Transparent – When you set the VTP mode to transparent, then the switches do not participate in VTP. A VTP transparent switch will not advertise its VLAN configuration and does not synchronize its VLAN configuration based on received messages. VLANS can be created, changed or deleted when in transparent mode. In VTP version 2, transparent switches do forward VTP messages that they receive out their trunk ports.
VTP sends messages between trunked switches to maintain VLANs on these switches in order to properly trunk. VTP messages are exchanged between switches within a common VTP domain. If the domain name is different, the switch simply ignores the packet. If the name is the same then it checks by a revision number. If the revision number of an update received on a client or server VTP switch is higher than the previous revision, then the new configuration is applied. Otherwise, the configuration is ignored.
When new devices are added to a VTP domain, revision numbers should be reset on the entire domain to prevent conflicts. Utmost caution is advised when dealing with VTP topology changes, logical or physical. Exchanges of VTP information can be controlled by passwords. You need to put the same password on every switch for it to work.