Configuring Traffic Control (Broadcast/Multicast Storm Control) - D-Link DGS-3324SR User Manual

D-Link DGS-3324SR Layer 3 Stackable Gigabit Ethernet Switch
Ingress Check
Acceptable Frame
Type
PVID
Configuring Traffic Control (Broadcast/Multicast Storm
Control)
Use the Traffic Control menu to enable or disable storm control and adjust the threshold for multicast and
broadcast storms, as well as DLF (Destination Look Up Failure). Traffic control settings are applied to individual
Switch modules.
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 disabled by default.
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. Tagged Only is enabled by default.
The read only field in the GVRP Table shows the current PVID assignment
for each port. 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.
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