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Why should you change the default native VLAN configuration of a trunk port?
Changing the native VLAN is mostly related to preventing VLAN hopping attacks. If this is of a concern you should use a different native VLAN on trunk ports between switches. For safety, this should be a VLAN not in use in the network. You want every valid VLAN to be tagged between switches.
What is the importance of trunk port in VLAN over access port?
A trunk port allows you to send all those signals for each switch or router across a single trunk link. In contrast to an access port, a trunk port must use tagging in order to allow signals to get to the correct endpoint. Trunk ports typically offer higher bandwidth and lower latency than access ports.
Does access port need native VLAN?
Access ports do not require a VLAN tag, since all incoming and outgoing frames belong to a single VLAN. The Native VLAN is simply the one VLAN which traverses a Trunk port without a VLAN tag.
Should native VLAN be allowed on trunk?
The one big reason to not include the native VLAN is the list of allowed VLANs is that a native VLAN is a security risk. The current best practice is to not include the native VLAN in the allowed VLANs on a trunk, and to not use VLAN 1 for anything. There is a misconception that you must have a native VLAN on a trunk.
What is the purpose of native VLAN?
Finally, we can conclude that the basic purpose of native VLAN is to serve it as a common identifier on opposing ends of a trunk link. To carry untagged traffic which is generated by a computer device attached to a switch port, which is configured with the native VLAN.
What is purpose of native VLAN?
Conclusion. Finally, we can conclude that the basic purpose of native VLAN is to serve it as a common identifier on opposing ends of a trunk link. To carry untagged traffic which is generated by a computer device attached to a switch port, which is configured with the native VLAN.
Do you need a trunk port for a VLAN?
If you have a switch that has a trunk point on port 1, and a router connected to the port as a trunk on both ends all vlans will be allowed through that trunk. You do not need to specifically specify the native vlan access to the trunk.
Can a native VLAN be connected to a switch port?
– No in your configuration,the Native vlan will be 900 and switchports will still be in vlan 1 The trunks can really only send untagged traffic between each other over native vlan 900, since no vlans are being trunked, which means no tagged traffic is going across that trunk link.-
Do you need a trunk port for a router?
When you configure a trunk it allows all vlans native or not native to cross the truck. If you have a switch that has a trunk point on port 1, and a router connected to the port as a trunk on both ends all vlans will be allowed through that trunk. You do not need to specifically specify the native vlan access to the trunk.
What’s the difference between a tagged and native VLAN?
Trunk ports are often referred to as tagged ports since there is more than one VLAN on that port and traffic for all but one VLAN need to be tagged. Native VLAN: The one VLAN in a trunk port that doesn’t receive a tag. Any traffic that doesn’t have a tag will be sent to the native VLAN.