Protocol Based Vlans - ZyXEL Communications GS1920-24 User Manual

The following table describes the labels in this screen.
Advanced Application > VLAN > VLAN Port Setting > Subnet Based VLAN Setup
Table 34
LABEL
Active
DHCP-Vlan
Override
Apply
Active
Name
IP
Mask-Bits
VID
Priority
Add
Cancel
Index
Active
Name
IP
Mask-Bits
VID
Priority
Delete
Cancel
9.7 Protocol Based
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.
Chapter 9 VLAN
DESCRIPTION
Check this box to activate this subnet based VLANs on the Switch.
When DHCP snooping is enabled DHCP clients can renew their IP address through the DHCP
VLAN or via another DHCP server on the subnet based VLAN.
Select this checkbox to force the DHCP clients in this IP subnet to obtain their IP addresses
through the DHCP VLAN.
Click Apply to save your changes to the Switch's run-time memory. The Switch loses these
changes if it is turned off or loses power, so use the Save link on the top navigation panel to
save your changes to the non-volatile memory when you are done configuring.
Check this box to activate the IP subnet VLAN you are creating or editing.
Enter up to 32 alpha numeric characters to identify this subnet based VLAN.
Enter the IP address of the subnet for which you want to configure this subnet based VLAN.
Enter the bit number of the subnet mask. To find the bit number, convert the subnet mask to
binary format and add all the 1's together. Take "255.255.255.0" for example. 255 converts
to eight 1s in binary. There are three 255s, so add three eights together and you get the bit
number (24).
Enter the ID of a VLAN with which the untagged frames from the IP subnet specified in this
subnet based VLAN are tagged. This must be an existing VLAN which you defined in the
Advanced Applications > VLAN screens.
Select the priority level that the Switch assigns to frames belonging to this VLAN.
Click Add to save your changes to the Switch's run-time memory. The Switch loses these
changes if it is turned off or loses power, so use the Save link on the top navigation panel to
save your changes to the non-volatile memory when you are done configuring.
Click Cancel to begin configuring this screen afresh.
This is the index number identifying this subnet based VLAN. Click on any of these numbers
to edit an existing subnet based VLAN.
This field shows whether the subnet based VLAN is active or not.
This field shows the name 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.
Click this to delete the subnet based VLANs which you marked for deletion.
Click Cancel to begin configuring this screen afresh.
VLANs
GS1920 Series User's Guide
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