3Com 3C16476A User Guide - Page 40
Sample VLAN Configurations, Setting Up Two VLANs on the Same Switch
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40 CHAPTER 4: CONFIGURING THE SWITCH The Switch will only forward a frame to ports that are members (tagged or untagged) of the VLAN to which the frame is assigned. If the port is an untagged member, the egress frame will be stripped of the VLAN tag and forwarded as untagged. However, if the port is a tagged member, the egress frame is forwarded as tagged. Sample VLAN Configurations To illustrate how you can segment network devices that are connected to the Switch, the following sample configurations are provided. Setting Up Two VLANs on the Same Switch Figure 32 illustrates how you can set up a simple VLAN on the Switch using desktop connections. Figure 32 Desktop VLAN Configuration Endstations in VLAN 2 Endstations in VLAN 1 Port 1 Port 3 BaselBinaeseSlwinietcSh w2i2tc5h0 2250 Plus Port 26 Server Server in VLAN 2 in VLAN 1 If you want to add ports 1, 3, and 26 to VLAN2 (as shown in Figure 32), so that the ports on the default VLAN1 and the ports on VLAN2 cannot communicate with each other, do the following: 1 Create a new VLAN and set the VLAN ID to 2. Refer to "Setup" for instructions. VLAN1 is the default VLAN and already exists. 2 Set ports 1, 3, and 26 to associate with the Untagged membership in VLAN2. 3 Click Apply. Ports 1, 3, and 26 now belong to VLAN2, and will not communicate with any other ports, unless you add other ports to the VLAN or change the port configuration. Setting Up VLAN Across Two Switches This example explains how you can set up a VLAN across two Switches using Tagged ports. This enables ports that are members of the same VLAN (but are on different switches) to communicate, provided that a port on each Switch is set to Tagged, and that these ports are connected.
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