3Com 3824 Implementation Guide - Page 67

VLAN Configuration Examples, Using Untagged Connections, Using Untagged, Connections

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VLAN Configuration Examples 67 identify which packets belong in which VLANs. To communicate between VLANs a router must be used. VLAN Configuration Examples This section contains examples of VLAN configurations. It describes how to set up your Switch to support simple untagged and tagged connections. Using Untagged Connections The simplest VLAN operates in a small network using a single switch. In this network there is no requirement to pass traffic for multiple VLANs across a link. All traffic is handled by the single Switch and therefore untagged connections can be used. The example shown in Figure 18 illustrates a single Switch connected to endstations and servers using untagged connections. Ports 1, 2 and 3 of the Switch belong to VLAN 1, ports 10, 11 and 12 belong to VLAN 2. VLANs 1 and 2 are completely separate and cannot communicate with each other. This provides additional security for your network. Figure 18 VLAN configuration example: Using untagged connections

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VLAN Configuration Examples
67
identify which packets belong in which VLANs. To communicate between
VLANs a router must be used.
VLAN
Configuration
Examples
This section contains examples of VLAN configurations. It describes how
to set up your Switch to support simple untagged and tagged
connections.
Using Untagged
Connections
The simplest VLAN operates in a small network using a single switch. In
this network there is no requirement to pass traffic for multiple VLANs
across a link. All traffic is handled by the single Switch and therefore
untagged connections can be used.
The example shown in
Figure 18
illustrates a single Switch connected to
endstations and servers using untagged connections. Ports 1, 2 and 3 of
the Switch belong to VLAN 1, ports 10, 11 and 12 belong to VLAN 2.
VLANs 1 and 2 are completely separate and cannot communicate with
each other. This provides additional security for your network.
Figure 18
VLAN configuration example: Using untagged connections