Gvrp Settings - D-Link xStack Reference Manual

xStack® DES-3200 Series Layer 2 Ethernet Managed Switch WEB UI Reference Guide

GVRP Settings

This window allows the user to determine whether the Switch will share its VLAN configuration information with other
GARP VLAN Registration Protocol (GVRP) enabled switches. In addition, Ingress Checking can be used to limit traffic
by filtering incoming packets whose PVID do not match the PVID of the port. Results can be seen in the table under
the configuration settings, as seen below.
To view this window, click L2 Features > GVRP Settings:
The following fields can be set:
Parameter Description
GVRP State Click the radio buttons to enable or disable the GVRP global state settings.
Settings
From Port/To Port
These two fields allow you to specify the range of ports that will be included in the Port-based
VLAN that you are creating using the 802.1Q Port Settings window.
PVID (1-4094) Enter a PVID assignment for each port, which may be manually assigned to a VLAN when
created in the 802.1Q Port Settings table. The Switch's default is to assign all ports to the
default VLAN with a VID of 1. The PVID is used by the port to tag outgoing, untagged packets,
and to make filtering decisions about incoming packets. If the port is specified to accept only
tagged frames - as tagging, and an untagged packet is forwarded to the port for transmission,
the port will add an 802.1Q tag using the PVID to write the VID in the tag. When the packet
arrives at its destination, the receiving device will use the PVID to make VLAN forwarding
decisions. If the port receives a packet, and Ingress filtering is enabled, the port will compare
the VID of the incoming packet to its PVID. If the two are unequal, the port will drop the packet.
If the two are equal, the port will receive the packet.
GVRP The Group VLAN Registration Protocol (GVRP) enables the port to dynamically become a
member of a VLAN. GVRP is Disabled by default.
Ingress Checking This field can be toggled using the space bar between Enabled and Disabled. Enabled enables
the port to compare the VID tag of an incoming packet with the PVID number assigned to the
port. If the two are different, the port filters (drops) the packet. Disabled disables ingress fil-
tering. Ingress Checking is Enabled by default.
Acceptable Frame This field denotes the type of frame that will be accepted by the port. The user may choose
Type between Tagged Only, which means only VLAN tagged frames will be accepted, and All, which
mean both tagged and untagged frames will be accepted. All is enabled by default.
Click Apply to implement changes made.
Figure 3 - 16. GVRP Settings window
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