VLAN Flashcards
What is link aggregation?
When you put multiple network interfaces into a group, which to the operating system appears as one interface with one IP address
What is VLAN?
Method of getting multiple networks over the same cable. Each VLAN has a tag and every port on a switch can output one or more VLANs, one of them optionally untagged (the PVID VLAN). Frames can be tagged with the VLAN they are apart of or left untagged. Untagged frames assumed to be apart of the PVID VLAN.
How do untagged ports (or “access ports”) operate in a VLAN?
Devices attached to them don’t have to understand VLANs
Packets from one VLAN on the switch are transmitted with the tag stripped
Packets arriving without a tag have a pre-defined tag added (PVID)
How do tagged ports operate in a VLAN?
All packets are transmitted with a tag, and only tagged packets are expected to be received
