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What are the function of VLAN?

Updated: 12/18/2022
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Q: What are the function of VLAN?
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What is the function of VTP in a LAN switching environment?

What is the function of VTP in a LAN switching environment? controls broadcastsstandardizes VLAN tagssimplifies VLAN managementcreates subinterfaces for inter-VLAN routing


What is a function or characteristic of the native VLAN?

It is the VLAN that supports untagged traffic on an 802.1Q trunk


How do you connect computers on separate VLAN?

Since VLAN's cannot communicate with other VLAN's directly, I believe you would have to set up a router to do that. I would check out how to set up a bridge between two VLAN's.


how are packets assigned to the VLAN?

VLAN: How are packets distributed with respect to the different classifications?


Why would packets from the router or hosts fail when trying to reach the switch management interfaces if the native VLAN were left in default?

The native VLAN is untagged. If the VLAN 99 traffic to the router is untagged (as it would be, because that is native on the switches), the router cannot interpret the data because there is no VLAN information in the header as expected. In turn, the router tags all VLAN 99 traffic outbound, and leaves VLAN 1 data untagged, so the switches are unable to correctly interpret either. VLAN traffic to the other VLANs should not be affected by the assignment of the native VLAN.


The network administrator needs to remove the east-hosts vlan and use the switch port from that vlan in one of the existing vlans what two commands should be used when completely removing vlan 2 from?

no vlan XXX copy run star


What is the difference between vlan and inter-vlan?

VLAN is a group of hosts with a common set of requirements that communicate as if they were attached to the same broadcast domain, regardless of their physical location. Inter VLAN is defined as two VLANS connected to each other and communicating.


What is pvid?

A Port VLAN ID (pvid) is a default VLAN ID that is assigned to an access port to designate the virtual LAN segment to which this port is connected. The pvid places the port into the set of ports that are connected under the designated VLAN ID. Also, if a trunk port has not been configured with any VLAN memberships, the virtual switch's Port VLAN ID (pvid) becomes the default VLAN ID for the ports connection.


Which type of VLAN would accommodate untagged traffic on a 802.1q trunk port?

native vlan


What is the purpose of the vlan database?

Vlan database is vlan.bat file which is stored in flash memory and earlier in NVRAM. It is used to store vlan information. we can take back up of this file.


What does VLAN stand for?

A VLAN is a virtual LAN. In technical terms, a VLAN is a broadcast domain created by switches. Normally, it is a router creating that broadcast domain. With VLANs, a switch can create the broadcast domain. This works by, you, the administrator, putting some switch ports in a VLAN other than 1, the default VLAN. All ports in a single VLAN are in a single broadcast domain. Because switches can talk to each other, some ports on switch A can be in VLAN 10 and other ports on switch B can be in VLAN 10. Broadcasts between these devices will not be seen on any other port in any other VLAN, other than 10. However, these devices can all communicate because they are on the same VLAN. Without additional configuration, they would not be able to communicate with any other devices, not in their VLAN.


How are data frames identified and sent to the correct VLAN when exiting an Ethernet trunk?

Based on the VLAN tag.