Which protocol is used by switches on its trunk links?

The IEEE 802.1Q protocol interconnects VLANs between multiple switches, routers, and servers.

Which Cisco proprietary protocol is used for dynamically forming a trunk connection between two switches?

Dynamic Trunking Protocol (DTP) is a Cisco proprietary protocol used for dynamically negotiating a trunk connection between two Cisco switches.

What are the two types of trunks that can be set up between switches?

Cisco supports only two types of trunks using Fast, Gigabit, and 10 Gigabit Ethernet ports: Cisco Inter-Switch Link Protocol (ISL) and IEEE 802.1Q. The Dynamic Trunking Protocol (DTP) allows a port to negotiate which method to use for trunking.

What is the trunking protocol used?

The Dynamic Trunking Protocol (DTP) is a proprietary networking protocol developed by Cisco Systems for the purpose of negotiating trunking on a link between two VLAN-aware switches, and for negotiating the type of trunking encapsulation to be used. It works on Layer 2 of the OSI model.

Which is the open standard trunking protocol?

VLAN Trunking Protocol (VTP) is a Cisco proprietary protocol that propagates the definition of Virtual Local Area Networks (VLAN) on the whole local area network.

What protocols both open and Cisco proprietary are used on trunk links?

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. Ethernet trunk interfaces support various trunking modes.

How do you negotiate trunking?

Enabling Trunking

1. Enable the trunk: COS. set trunk mod/port [auto | desirable | on | nonegotiate | off] IOS. (global) interface type mod/port.
2. Specify the encapsulation method: COS. set trunk mod/port [negotiate | isl | dot1Q] IOS.
3. (Optional) Specify the native VLAN: COS. set vlan number mod/port. IOS.

What is the purpose of the Cisco VLAN trunking protocol?

Cisco’s VLAN Trunking Protocol (VTP) provides an easier method for maintaining consistent VLAN configuration throughout the switched network. VTP is a protocol used to distribute and synchronize identifying information about VLANs configured throughout a switched network.

What are two trunking protocols?

Trunking Protocol Standards. There are two trunking protocols used on modern communication networks: Inter-Switch Link (ISL) from Cisco and the aforementioned nonproprietary IEEE 802.1Q. Of the two, IEEE 802.1Q is the industry standard. Even Cisco switches now use IEEE 802.1Q (dot1q) by default.

How do you Trunk a Cisco switch?

To enable trunk links, configure the ports on either end of the physical link with parallel sets of commands. To configure a switch port on one end of a trunk link, use the switchport mode trunk command. With this command, the interface changes to permanent trunking mode.

What is trunking in Cisco switch?

A trunk is a point-to-point link between one or more Ethernet switch interfaces and another networking device such as a router or a switch. Ethernet trunks carry the traffic of multiple VLANs over a single link, and you can extend the VLANs across an entire network.