Trunk Ports Flashcards
What is a trunk port in a switch?
A trunk port is a switch port that carries traffic for
How do trunk ports differ from access ports?
Trunk ports carry traffic for multiple VLANs and tag frames with a VLAN ID, while access ports carry traffic for a single VLAN without tagging.
What command is used to configure a port as a trunk port in Junos OS?
The command to configure a port as a trunk port in Junos OS is: set interfaces <interface-name> unit 0 family ethernet-switching port-mode trunk.</interface-name>
What is the purpose of VLAN tagging on a trunk port?
VLAN tagging allows multiple VLANs to traverse the same physical link between switches by adding a VLAN ID to each frame.
How do you configure allowed VLANs on a trunk port in Junos OS?
You can configure allowed VLANs on a trunk port with the command: set interfaces <interface-name> unit 0 family ethernet-switching vlan members <vlan-list>.</vlan-list></interface-name>
What is the native VLAN on a trunk port?
The native VLAN is the VLAN that is not tagged when it travels across a trunk link. By default, VLAN 1 is the native VLAN, but it can be changed.
What happens if a trunk port receives an untagged frame?
If a trunk port receives an untagged frame, it assigns the frame to the native VLAN for that trunk.
Can a trunk port support VLANs other than the native VLAN?
Yes, a trunk port can support multiple VLANs, with each frame being tagged according to its VLAN, except for the native VLAN which is untagged.
How does a trunk port handle traffic from different VLANs?
A trunk port uses VLAN tags to differentiate between traffic from different VLANs and forwards the frames accordingly.
How do you verify the trunk port configuration in Junos OS?
Use the command show interfaces <interface-name> extensive to verify the trunk port configuration, including allowed VLANs and the native VLAN.</interface-name>
