Application Examples 2

Making VLAN Connections

This switch supports VLANs which can be used to organize any group of network nodes into separate broadcast domains. VLANs confine broadcast traffic to the originating group, and can eliminate broadcast storms in large networks. This provides a more secure and cleaner network environment.

VLANs can be based on untagged port groups, or traffic can be explicitly tagged to identify the VLAN group to which it belongs. Untagged VLANs can be used for small networks attached to a single switch. However, tagged VLANs should be used for larger networks, and all the VLANs assigned to the inter-switch links.

R&D

 

 

 

 

VLAN 1

 

Tagged Port

 

 

 

 

Tagged

 

Untagged Ports

 

 

 

 

Ports

 

 

 

 

 

VLAN

 

 

Finance

unaware

 

 

 

switch

 

 

 

Marketing

VLAN 2

 

 

Finance

Testing

VLAN 3

VLAN 4

VLAN 3

VLAN aware switch

R&D

Testing

VLAN 1

VLAN 2

Figure 2-4 Making VLAN Connections

Note: When connecting to a switch that does not support IEEE 802.1Q VLAN tags, use untagged ports.

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Milan Technology MIL-SM4804G manual Making Vlan Connections