User manual

xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual

Parameter Description

Unit

Choose the Switch ID number of the Switch in the switch stack to be modified.

From/To

These two fields allow the user to specify the range of ports that will be included in

the Port-based VLAN that you are created using the GVRP Settings page.

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 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 means both tagged and untagged frames will be

accepted. Admit_All is enabled by default.

PVID

The read-only field in the GVRP 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 a packet is received by the

port, 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.