VLANs Feature Overview and Configuration Guide
This guide describes Virtual LANs (VLANs), VLAN features, and VLAN configuration on the switch. It begins with a description of what a VLAN is, its evolution and purpose, and also provides the meaning of some common VLAN terminology.
This is followed by a detailed look at port-based VLAN implementation, which is the most common way to split a network into sets of virtual LANs. We look at how this is achieved using VLAN tagging.
We discuss private VLANs and the communication rules that limit what is possible between devices operating within the VLAN. AlliedWare Plus™ has three private VLAN solutions. These are:
- private VLANs for ports in access mode,
- private VLANs for trunked ports, and
- private VLANs for ports in upward forwarding only (UFO) mode.
Other topics covered are:
- Combining private VLANs with features such as: EPSR, ARP, LLDP, GVRP, link aggregation, and management servers.
- The use of VLAN double tagging to tunnel VLANs across Layer 2 networks. (Double tagging is also known as Nested VLANs, VLAN stacking and Q-in-Q).
- VLAN ID translation, which translates a VLAN’s ID to another value for use on the wire.
The guide ends with a section on configuring protocol based VLANs and then describes how data counters are used to count both the number of received frames and the number of received bytes (octets) belonging to a particular VLAN.
