Netgear GSM7252PS ProSafe Managed Switch Web Management User Manual - Page 144

ProSafe® Gigabit L3 Managed Stackable Switches Software Administration Manual Protocol Based VLAN Group Configuration You can use a protocol based VLAN to define filtering criteria for untagged packets. By default, if you do not configure any port- (IEEE 802.1Q) or protocol based VLANs, untagged packets will be assigned to VLAN 1. You can override this behavior by defining either port-based VLANs or protocol based VLANs, or both. Tagged packets are always handled according to the IEEE 802.1Q standard, and are not included in protocol based VLANs. If you assign a port to a protocol based VLAN for a specific protocol, untagged frames received on that port for that protocol will be assigned the protocol based VLAN ID. Untagged frames received on the port for other protocols will be assigned the Port VLAN ID - either the default PVID (1) or a PVID you have specifically assigned to the port using the Port VLAN Configuration screen. You define a protocol based VLAN by creating a group. Each group has a one-to-one relationship with a VLAN ID, can include one to three protocol definitions, and can include multiple ports. When you create a group you will choose a name and a Group ID will be assigned automatically. To display the Protocol Based VLAN Group Configuration page, click Switching VLAN  Advanced  Protocol Based VLAN Group Configuration. 144 | Chapter 3. Configuring Switching Information