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14 lut 2020 · To ease some of the VLAN and trunking configurations, trunk negotiation between network devices is managed by the Dynamic Trunking Protocol (DTP), and is automatically enabled on Catalyst 2960 and Catalyst 3650 switches. In this activity, you will configure trunk links between the switches.
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.
15 sty 2010 · The DTP protocol is unauthicated which means that a station can send false DTP packets, pretending to be a switch. If the switchport is configured as a dynamic port, an attacker can lure the switchport to become a trunk port and he will gain access to all VLANs allowed on that trunk.
9 lut 2018 · The DTP packets are not sent in these three circumstances: 1.) Either the port is a static access port configured by the command switchport mode access. 2.) Or the port is a static trunk port configured with the command switchport mode trunk and at the same time, the DTP negotiation is deactivated using the command switchport nonegotiate. 3.)
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.
Packet Tracer - Configure VLANs and Trunking - Physical Mode. Topology. Addressing Table. Objectives. Part 1: Build the Network and Configure Basic Device Settings Part 2: Create VLANs and Assign Switch Ports Part 3: Maintain VLAN Port Assignments and the VLAN Database Part 4: Configure an 802.1Q Trunk Between the Switches. Background / Scenario.
Dynamic Trunking Protocol or DTP is used on Cisco IOS switches to negotiate if the interface should become an access port or trunk. By default DTP is enabled and the switch interfaces will be in “dynamic auto” or “dynamic desirable” mode.
