D-Link DGS-3224TGR User Manual

Page of 160
DGS-3224TGR Gigabit Ethernet Switch User’s Guide
 
69 
 
Figure 6- 52.  Broadcast/Multicast Storm Control – Edit window 
The BS/MS/DLF Upper Threshold sets the rate of broadcast/multicast/destination lookup fail packets received on a port or 
group of ports that will trigger the action to be taken by the switch, as detailed below. A range of thousands of packets 
received per second (Kpps) between 0 and 255 can be specified. 
When a port or group of ports receives more broadcast, multicast, or destination lookup fail packets per second than is 
specified in the respective Upper Threshold (0-255 Kpps) field, the switch will take the actions specified in the Broadcast 
Storm Mode, Multicast Storm Mode, and the Destination Lookup Fail pull-down menus. 
The Broadcast Storm Mode is Enabled or Disabled using a pull-down menu. When the Broadcast Storm Mode is Enabled
and a port contained within the corresponding port group receives more broadcast packets than specified in the Upper 
Threshold (0-255 Kpps) field, the switch will drop all broadcast packets received by any port in the port group until the rate 
of broadcast packets received by the port group falls. 
The Multicast Storm Mode is Enabled or Disabled using a pull-down menu. When the Multicast Storm Mode is Enabled
and a port contained within the corresponding port group receives more multicast packets than specified in the Upper 
Threshold (0-255 Kpps) field, the switch will drop all multicast packets received by any port in the port group until the rate 
of multicast packets received by the port group falls.   
The Destination Lookup Fail is Enabled or Disabled using a pull-down menu. When the Destination Lookup Fail is 
Enabled, and a port contained within the corresponding port group receives more destination lookup failed packets than 
specified in the Upper Threshold (0-255 Kpps) field, the switch will drop all destination lookup failed packets received by 
any port in the port group until the rate of destination lookup failed packets received by the port group falls. 
Configure QOS 
The DGS-3224TGR supports 802.1p priority queuing. The switch has eight priority queues. These priority queues are 
numbered from 0 — the lowest priority queue — to 7 — the highest priority queue. The eight priority queues specified in 
IEEE 802.1p (Q0 to Q7) are mapped to the switch’s priority queues as follows: 
Q0 is assigned to the switch’s Q2 queue. 
Q1 is assigned to the switch’s Q0 queue. 
Q2 is assigned to the switch’s Q1 queue. 
Q3 is assigned to the switch’s Q3 queue.