D-Link DGS-3627G Product Manual - Page 114

xStack® DGS-3600 Series Layer 3 Managed Gigabit Ethernet Switch 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 - and the tagging packet is forwarded to the port for transmission, then the untagged packets will be dropped. 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 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 This field denotes the type of frame that will be accepted by the port. The user may choose between Frame Tagged Only, which means only VLAN tagged frames will be accepted, and Admit_All, which mean Type both tagged and untagged frames will be accepted. Admit_All is enabled by default. Click Apply to implement changes made. 98