8.6 Protocol Based VLANs
Protocol based VLANs allow you to group traffic into logical VLANs based on the protocol you specify. When an upstream frame is received on a port (configured for a protocol based VLAN), the switch checks if a tag is added already and its protocol. The untagged packets of the same protocol are then placed in the same protocol based VLAN. One advantage of using protocol based VLANs is that priority can be assigned to traffic of the same protocol.
Note: Protocol based VLAN applies to
For example, port 1, 2, 3 and 4 belong to static VLAN 100, and port 4, 5, 10, 11 belong to static VLAN 120. You configure a protocol based VLAN A with priority 3 for ARP traffic received on port 1, 2 and 3. You also have a protocol based VLAN B with priority 2 for Apple Talk traffic received on port 10 and 11. All upstream ARP traffic from port 1, 2 and 3 will be grouped together, and all upstream Apple Talk traffic from port 10 and 11 will be in another group and have higher priority than ARP traffic, when they go through the uplink port to a backbone switch C.
Figure 38 Protocol Based VLAN Application Example
8.7 Configuring Protocol Based VLAN
Click Advanced Applications, Protocol Based VLAN in the navigation panel to display the configuration screen as shown.
Note:
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