ZyXEL Communications Dimension ES-4124, User Manual

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ES-4124 User’s Guide
88 Chapter 8 VLAN
The following table describes the labels in this screen.
8.6 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.
Table 17 VLAN: VLAN Port Setting
LABEL DESCRIPTION
GVRP GVRP (GARP VLAN Registration Protocol) is a registration protocol that defines a
way for switches to register necessary VLAN members on ports across the
network.
Select this check box to permit VLAN groups beyond the local switch.
Port Isolation Port Isolation allows each port to communicate only with the CPU management
port and the Gigabit uplink ports but not communicate with each other. This option
is the most limiting but also the most secure.
Port This field displays the port number.
* Settings in this row apply to all ports.
Use this row only if you want to make some settings the same for all ports. Use this
row first to set the common settings and then make adjustments on a port-by-port
basis.
Note: Changes in this row are copied to all the ports as soon as you
make them.
Ingress Check If this check box is selected for a port, the switch discards incoming frames for
VLANs that do not include this port in its member set.
Clear this check box to disable ingress filtering.
PVID Enter a number between 1and 4094 as the port VLAN ID.
GVRP Select this check box to allow GVRP on this port.
Acceptable Frame
Type
Specify the type of frames allowed on a port. Choices are All , Tag Only and Untag
Only .
Select All from the drop-down list box to accept all untagged or tagged frames on
this port. This is the default setting.
Select
Tag Only to accept only tagged frames on this port. All untagged frames will
be dropped.
Select
Untag Only to accept only untagged frames on this port. All tagged frames
will be dropped.
VLAN Trunking Enable VLAN Trunking on ports connected to other switches or routers (but not
ports directly connected to end users) to allow frames belonging to unknown VLAN
groups to pass through the switch.
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.
Cancel Click Cancel to reset the fields.