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Forum Replies

  1. Ahmad,
    A Native VLAN is the vlan that is used should a trunk port receive an frame with no explicit VLAN tag. I will give you an example of how I used Native VLANs in the real world:

    For many of my locations, users have a single network connection to their desk. They use both a VOIP phone (not Cisco :frowning: ), and a PC. Both of these devices use the single network connection. The connection goes to the VOIP phone, and the computer plugs into another port on the phone. The VOIP traffic is on a separate VLAN than the PC data traffic.

    To get this to work, we have to

    ... Continue reading in our forum

  2. Hi Andrew,
    I was just browsing through the native vlan topics and i saw your reply to Ahmad. I dont understand your replay starting “To get this to work, we have to configure each port as a Trunk and allow both the VOIP VLAN and the PC Data vlan on the switch port” Which port are you configuring as a trunk?
    I have configured VOIP vlan and pc data vlan on a switch port and it is not configured as a trunk port for both devices to work with the cat5 from the wall going into the phone first and then the pc connected to the phone.
    The port on the switch is configu

    ... Continue reading in our forum

  3. Hello Karan

    Frames that are sent from almost all network devices such as computers, are sent without tags. Frames sent out of access ports on switches are also sent without tags. Tags are only added when a frame exits a trunk port and are removed once again when it enters the trunk port on the other end. Tagged frames should only exist on the link between two switches connected via a trunk.

    Having said that, the Native VLAN is set up on a trunk so that any frames that do arrive on that trunk port without a tag will be placed on the appropriate VLAN. Situati

    ... Continue reading in our forum

  4. Hello Aniket

    There are two ways to implement the following scenario:


    One is to configure the Gi0/1 interface as a trunk. Let’s say the voice VLAN on our network is 137 and the data VLAN is 135. We would configure the Gi0/1 interface as a trunk, with a native VLAN of 135 and an allowed VLAN of 137. This means that frames on VLAN 135 destined for H1 would exit the Gi0/1 interface untagged. Any such frames reaching the IP phone would continue on to H1. A

    ... Continue reading in our forum

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