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xStack DES-3800 Series Layer 3 Stackable Fast Ethernet Managed Switch
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GVRP Setting
Figure 7- 9. GVRP Settings window
NOTE: The Switch supports up to 4k Dynamic Entries.
The following fields can be set:
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 Group 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 between Enabled and Disabled using the drop-down menu. 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 Disabled 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.
The GVRP Settings window, shown right, 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.
Click L2 Features > VLAN > GVRP Settings.