Microsens MS453490M Management Guide User Manual

Page 156

HAPTER

| VLAN Configuration

IEEE 802.1Q VLANs

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since traffic must pass through a configured Layer 3 link to reach a

different VLAN.

This switch supports the following VLAN features:

◆

Up to 256 VLANs based on the IEEE 802.1Q standard

◆

Distributed VLAN learning across multiple switches using explicit or

implicit tagging and GVRP protocol

◆

Port overlapping, allowing a port to participate in multiple VLANs

◆

End stations can belong to multiple VLANs

◆

Passing traffic between VLAN-aware and VLAN-unaware devices

◆

Priority tagging

Assigning Ports to VLANs
Before enabling VLANs for the switch, you must first assign each port to

the VLAN group(s) in which it will participate. By default all ports are

assigned to VLAN 1 as untagged ports. Add a port as a tagged port if you

want it to carry traffic for one or more VLANs, and any intermediate

network devices or the host at the other end of the connection supports

VLANs. Then assign ports on the other VLAN-aware network devices along

the path that will carry this traffic to the same VLAN(s), either manually or

dynamically using GVRP. However, if you want a port on this switch to

participate in one or more VLANs, but none of the intermediate network

devices nor the host at the other end of the connection supports VLANs,

then you should add this port to the VLAN as an untagged port.

OTE

VLAN-tagged frames can pass through VLAN-aware or VLAN-

unaware network interconnection devices, but the VLAN tags should be

stripped off before passing it on to any end-node host that does not

support VLAN tagging.

Figure 57: VLAN Compliant and VLAN Non-compliant Devices

VA: VLAN Aware
VU: VLAN Unaware

tagged frames

tagged
frames

untagged
frames