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DTP is normally used on Cisco IOS switches to negotiate if the interface should become an access port or trunk. By default, DTP is enabled, and the interfaces of your switches will be in “dynamic auto” or “dynamic desirable” mode.
- Cisco Ios Span and RSPAN
Layer 2 frames like CDP, VTP, DTP, and spanning tree BPDUs...
- Cisco Ios Span and RSPAN
DTP, Dynamic Trunking Protocol, is a trunking protocol that is developed and proprietary to Cisco which is used to automatically negotiate trunks between Cisco switches. Trunk negotiations are managed by DTP only if the port is directly connected to each other.
Port można skonfigurować w jednym z poniższych stanów: Dynamic auto – tryb pasywny, pozwala na utworzenie stanu „Trunk”, jeśli drugi koniec aktywnie negocjuje; Dynamic desirable – tryb aktywny, pozwala na utworzenie „Trunk”; Trunk – przełącz interfejs w stały tryb „Trunk”; Access – Protokół DTP jest korzystnie w stanie wyłączonym.
9 cze 2024 · DTP ( Dynamic Trunk Protocol) is a Cisco proprietary trunking protocol. Switches use it on trunk connections to form trunks dynamically. DTP supports five trunking modes: On or Trunk, Desirable, Auto, Off, and No-negotiate. A trunk link carries traffic from multiple VLANs. It connects two trunk ports.
Trunk negotiation is managed by the Dynamic Trunking Protocol (DTP), which operates on a point-to-point basis only, between network devices. DTP is a Cisco proprietary protocol that is automatically enabled on Catalyst 2960 and Catalyst 3560 Series switches.
Dynamic Trunking Protocol (DTP) Configuration. So we’ve seen the static trunking configuration, switchport mode trunk. Now let’s look at the other methods. By default, it will either be auto or desirable, which are Dynamic Trunking Protocol methods. What does auto state mean?
Instead of static trunk or access mode configuration, Cisco's Dynamic Trunking Protocol (DTP) allows Layer 2 interfaces to automatically negotiate either trunk or access mode operation. In order to dynamically choose a trunking operational mode, an interface must be configured in dynamic mode.