Asus GigaX2048 - Manual (Page 40)

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GigaX2024/2048 L2 Managed Switch User Manual
“T” type: All packets transmitted from this port will be tagged.
“blank” type: This port is not a member of the VLAN group.
If one untagged port belongs to two or more VLAN groups at the same time, it
will confuse the switch and cause flooding traffics. To prevent it, the switch only
allow one untagged port belongs to one VLAN at the same time. That is, the
untagged port belongs to the VLAN group which is called “PVID” and configured
in the “Default Port VLAN & CoS” page. If you want to assign an untagged port
from one VLAN to another, you have to remove it from the original VLAN, or
change it to be tagged in the original VLAN first.
Show VLAN: select the existed VLAN to display or select “Add a new VLAN”
to create a new VLAN group
Name: the VLAN name. The string of VLAN name can not include character ʻ/ʼ
and space.
DHCP Snoop: Enable or disable DHCP snooping on this VLAN.
VLAN ID: this field requires user to enter the VLAN ID when a new VLAN is
created
Remove VLAN: Remove an existed VLAN. This field disappears in VLAN
creation page.
Private VLAN: Set this VLAN to be a Private VLAN(PVLAN). PVLAN is
to provide LAN security with the simplicity of VLAN configuration. System
administrator can reduce the VLAN and IP consumption but provide the
same security to LAN. We cannot use default VLAN(VLAN 1) as the PVLAN.
In our system, the total number of PVLAN is four. There are two types port in
a PVLAN, they are described as follows.
a) Promiscuous Port: A PVLAN must and only can have one promiscuous
port. It communicates with all interfaces within a PVLAN.
b) Isolated Port: The non-promiscuous ports in a PVLAN. It has complete
Layer 2 separation from the other ports within the same PVLAN, but not
from the promiscuous port. PVLANs block all traffic to isolated ports except
traffic from promiscuous port. Traffic from isolated port is forwarded only to
promiscuous port. Traffic control do not work for isolated port.
Promiscuous Port:Select a promiscuous port for a PVLAN. This field is
effective when Private VLAN field is checked.
Click OK to make the setting send to the switch (HTTP server). Click Reload to
refresh the settings to current value. To make the configuration effective, please
go to Save Configuration page, then click Save.