D-Link xStack DGS-3600 Series User Manual - Gvrp Settings
xStack DGS-3600 Series Layer 3 Gigabit Ethernet Managed Switch
GVRP Settings
In the
L2 Features
folder, open
VLAN
and click
GVRP Settings
.
The
GVRP Settings
window, shown below, allows you 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
does not match the PVID of the port. Results can be seen in the table under the configuration settings, as seen below.
Figure 7- 7. GVRP Settings window
96
Parameter Description
From/To
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.
GVRP
The GARP VLAN Registration Protocol (GVRP) enables the port to dynamically become a member
of a VLAN. GVRP is
Disabled
by default.
Ingress
Check
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 filtering. Ingress
Checking is
Enabled
by default.
Acceptable
Frame
Type
This field denotes the type of frame that will be accepted by the port. The user may choose between
Tagged Only
, which means only VLAN tagged frames will be accepted, and
Admit_All
, which mean
both tagged and untagged frames will be accepted.
Admit_All
is enabled by default.
PVID
The read-only field in the 802.1Q Port Table shows the current 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.
Click
Apply
to implement changes made.