Posted on 2012-09-17
Last Modified: 2012-09-18
I have a network with multiple layer3 switches from 3com. I need to create several vlans.

vlan 1 (default admin)
vlan 2
vlan 3
vlan 4

These vlans are spread out thru all switches. I created trunk ports and added all vlans tagged except vlan 1 which is a member of the trunk untagged.

When I add members in each access port of each switch, do they have to be tagged or untangged?
Question by:ElCubiche
    LVL 42

    Expert Comment

    typically vlan 1 is untagged and the rest should be tagged. this way when they pass through the trunk the switch knows what to do with them
    LVL 15

    Accepted Solution

    Usually with access ports you're connecting an end device to a particular network, so you present the traffic on that port for a particular VLAN as untagged.

    There are exceptions. For example with IP telephone handsets you would usually configure the port so that the data traffic is untagged and the voice traffic tagged.
    LVL 18

    Expert Comment

    Access ports should be untagged for ordinary PCs.

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