ZyXEL Communications GS2200 Series, User Manual

Page: 88 / 320

Chapter 9 VLAN
GS2200 Series User’s Guide
88
9.6 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.
For example, port 1, 2, 3 and 4 belong to static VLAN 100, and port 4, 5, 6, 7 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 6 and
7. All upstream ARP traffic from port 1, 2 and 3 will be grouped together, and all upstream Apple
Talk traffic from port 6 and 7 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 57
Protocol Based VLAN Application Example
9.6.1 Configuring Protocol Based VLAN
Click Protocol Based VLAN in the VLAN Port Setting screen to display the configuration screen
as shown.
Index This is the index number identifying this subnet based VLAN. Click on any of these numbers
to edit an existing subnet based VLAN.
Active This field shows whether the subnet based VLAN is active or not.
Name This field shows the name the subnet based VLAN.
IP This field shows the IP address of the subnet for this subnet based VLAN.
Mask-Bits This field shows the subnet mask in bit number format for this subnet based VLAN.
VID This field shows the VLAN ID of the frames which belong to this subnet based VLAN.
Priority This field shows the priority which is assigned to frames belonging to this subnet based
VLAN.
Delete Click this to delete the subnet based VLANs which you marked for deletion.
Cancel Click Cancel to begin configuring this screen afresh.
Table 21
Advanced Application > VLAN > VLAN Port Setting > Subnet Based VLAN Setup
LABEL DESCRIPTION