Инструкция для ZYXEL GS1920-48

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 Chapter 9 VLAN

GS1920 Series User’s Guide

95

The following table describes the labels in this screen. 

9.7  

Protocol Based VLAN

s

 

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.

Table 34   

Advanced Application > VLAN > VLAN Port Setting > Subnet Based VLAN Setup 

LABEL

DESCRIPTION

Active

Check this box to activate this subnet based VLANs on the Switch.

DHCP-Vlan 
Override

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.  

Apply

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.

Active

Check this box to activate the IP subnet VLAN you are creating or editing.

Name

Enter up to 32 alpha numeric characters to identify this subnet based VLAN.

IP

Enter the IP address of the subnet for which you want to configure this subnet based VLAN.

Mask-Bits

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). 

VID

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.

Priority

Select the priority level that the Switch assigns to frames belonging to this VLAN.

Add

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.

Cancel

Click Cancel to begin configuring this screen afresh.

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.

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