3Com 3C16476BS-US User Guide - Page 33
Creating a VLAN, Deleting VLANs - specifications
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Configuring VLANs 33 networks. This also provides for a more secure and cleaner network environment. You can create up to 256 VLANs, add specific ports to a chosen VLAN (so that the port can only communicate with other ports on the VLAN), or configure a port make it a member of all VLANs. Communication between different VLANs can only take place if they are all connected to a router or layer 3 switch. Creating a VLAN Use the Create VLANs screen to create VLANs on the Switch. To propagate information about VLAN groups used on this Switch to external devices, you must specify a VLAN ID for each VLAN. Figure 14 Create VLANs Screen For examples on setting up VLANs, refer to "Sample VLAN Configurations". CAUTION: At least one port must always be a member of VLAN 1 (the management VLAN). If you choose to connect all ports to VLANs other than VLAN 1, you will no longer be able to access the Web interface. If this happens, you will need to reset the Switch to factory settings. By default, all ports belong to VLAN 1. Deleting VLANs Use the Delete screen to remove a VLAN group from the current list. Figure 15 Delete Screen Available options on the Create VLAN screen include: ■ VLAN ID - ID of configured VLAN (1-4094, no leading zeroes) ■ Name - Name of the VLAN (1 to 32 characters) ■ VLAN ID - ID of the VLAN to be deleted. If any port is assigned to this group as untagged, it will be reassigned to VLAN group 1 as untagged.