How do I set up my Switchport trunk?
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.
How do I show trunk interface?
To display the status of the trunk, determine the native VLAN used on that trunk link and verify trunk establishment using the show interfaces trunk command. The following output shows that the native VLAN on one side of the trunk link was changed to VLAN 2.
What is trunk mode?
Trunk ports are generally used in the switch to switch communication or switch to Router (Router on a stick). Trunks carry multiple Vlans across devices and maintain VLAN tags in Ethernet frames for receiving directly connected device differentiates between different Vlans.
How to configure a trunk port switch?
Switch (config-if)# switchport mode trunk By default this configuration allows all VLANs to be transmitted over the trunk link. To restrict the link to carry only specified VLANs use the allowed vlan command Switch (config)# interface GigabitEthernet 0/0/10
Why is switchport mode called dynamic Trunking mode?
The interface will become a trunk interface even if the neighbouring ports are trunk or not that is why it is called DTP mode ON. switchport mode dynamic auto – This is a default mode on the older CISCO switches. This mode makes the interface able to convert to a trunk link.
What is a trunk port in DTP protocol?
Dynamic Trunking Protocol (DTP) Trunk ports are ports that are used to carry the traffic of more than one VLAN.The port which connects two different switches and the switches have more than one VLAN configured then that port should be made trunk.
Can a trunk port be assigned to a VLAN?
An Access port can only be assigned to one VLAN & you can configure a switchport as an access port as follows: A switchport configured as trunk port can carry multiple VLANs information and it typically used when multiple VLANs need connectivity between switch and other devices like router or firewall. To configure a switchport as trunk port.