- What are the types of VLAN?
- What is difference between default VLAN and native VLAN?
- What is native VLAN?
- What is the purpose of the native VLAN?
- Is native VLAN allowed on trunk?
- What does untagged VLAN mean?
- How does voice VLAN work?
- What is the difference between a default VLAN and a native VLAN quizlet?
- How do I make a native VLAN?
- How do I find my native VLAN?
- Is the native VLAN tagged?
- What does VLAN 0 mean?
What are the types of VLAN?
Types of Virtual LAN (VLAN)Default VLAN – When the switch initially starts up, all switch ports become a member of the default VLAN (generally all switches have default VLAN named as VLAN 1), which makes them all part of the same broadcast domain.
Data VLAN – …
Voice VLAN – …
Management VLAN – …
Native VLAN –.
What is difference between default VLAN and native VLAN?
Native VLAN concept exists in case of encapsulation type 802.1Q (802.1Q supports untagged traffic while ISL does not support untagged traffic). … In terms of encapsulation, Default VLAN is seen to support both DOT1Q and ISL encapsulations. On the contrary, Native VLAN only exists in DOT1Q encapsulation type.
What is native VLAN?
native vlan means that device will never put/insert tag (VLAN ID, in you case “VLAN ID:2”) on Ethernet frame when it leaves port and also when Ethernet frame without tag go into that port device will put/insert tag defined by native vlan ( in you case VLAN ID:2).
What is the purpose of the 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.
Is native VLAN allowed on trunk?
There is a misconception that you must have a native VLAN on a trunk. The link-local protocols that send frames without tags will still work. They really are not part of a VLAN, native or otherwise. The NATIVE VLAN should NOT be included on the “switch allowed vlan” list.
What does untagged VLAN mean?
untagged – means that if there is packets on this port that have no vlan id set will have their vlan id tag set to this vlan by the switch. Packets that do have a vlan tag with this vlan id will bei ignored. This means that the client must not tag packets for this vlan.
How does voice VLAN work?
The voice VLAN feature enables access ports to carry IP voice traffic from an IP phone. When the switch is connected to a Cisco 7960 IP Phone, the phone sends voice traffic with Layer 3 IP precedence and Layer 2 class of service (CoS) values, which are both set to 5 by default.
What is the difference between a default VLAN and a native VLAN quizlet?
By default, all Layer 2 control traffic is associated with VLAN 1. A native VLAN is assigned to an 802.1Q trunk port. Trunk ports are the links between switches that support the transmission of traffic associated with more than one VLAN.
How do I make a native VLAN?
To configure the native VLAN ID for the virtual Ethernet interface, use the switchport trunk native vlan command. To remove the native VLAN ID from the virtual Ethernet interface, use the no form of this command.
How do I find my native VLAN?
Use the show interfaces trunk command to check whether the local and peer native VLANs match. If the native VLAN does not match on both sides, VLAN leaking occurs. Use the show interfaces trunk command to check whether a trunk has been established between switches.
Is the native VLAN tagged?
In Cisco LAN switch environments the native VLAN is typically untagged on 802.1Q trunk ports. This can lead to a security vulnerability in your network environment. It is a best practice to explicitly tag the native VLAN in order to prevent against crafted 802.1Q double-tagged packets from traversing VLANs.
What does VLAN 0 mean?
The VLAN ID 0 is used when a device needs to send priority-tagged frames but does not know in which particular VLAN it resides. The basic Ethernet frame does not have any priority field. The priority bits, also called CoS bits (Class of Service) are a part of 802.1Q VLAN tag.