Protocol Based Vlans - ZyXEL Communications XS3800-28 User Manual

Table 47 Advanced Application > VLAN > VLAN Configuration > Subnet Based VLAN Setup (continued)
LABEL
Name
IP
Mask-Bits
VID
Priority
Delete
Cancel

9.7.4 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 un-tagged packets and is applicable only when you
use IEEE 802.1Q tagged VLAN.
For example, ports 1, 2, 3 and 4 belong to static VLAN 100, and ports 4, 5, 6, 7 belong to static VLAN 120.
You can configure a protocol based VLAN A with priority 2 for ARP traffic received on port 1, 2 and 3.
You can also have a protocol based VLAN B with priority 3 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 102 Protocol Based VLAN Application Example
9.7.4.1 Configuring Protocol Based VLAN
Click the Protocol Based VLAN Setup link in the VLAN Configuration screen to display the configuration
screen as shown.
Chapter 9 VLAN
DESCRIPTION
This field shows the name of the subnet based VLAN.
This field shows the IP address of the subnet for this subnet based VLAN.
This field shows the subnet mask in bit number format for this subnet based VLAN.
This field shows the VLAN ID of the frames which belong to this subnet based VLAN.
This field shows the priority which is assigned to frames belonging to this subnet based VLAN.
Select an entry's check box to select a specific entry. Otherwise, select the check box in the
table heading row to select all entries.
Click this to delete the subnet based VLANs which you marked for deletion.
Click Cancel to clear the check boxes.
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