DELL PC2716 User Manual

When Layer 2 frames are forwarded, Broadcast, Multicast and Unknown Unicast frames are 

flooded to all ports on the designated VLANs on the switch. When the switch experiences an 

excessive amount of Broadcast/Multicast/Unknown Unicast frames on network links, Storm 

Control mechanism controls the amount of frames entering the switch.
The 

Storm Control page is used to configure the settings of packet Storm Control. Storm Control 

can be enabled or disabled per port. The 

Storm Control page displays the type of packets, and the 

rate at which packets are received.

The PowerConnect 2708 switch measures the incoming Broadcast/Multicast/Unknown Unicast 

packet rate 

per port, and discards excess packets when the rate exceeds the defined threshold value. 

In addition to the count definition per port, the Broadcast rate threshold is configured to exclude 

certain values.
The PowerConnect 2708 switch users can do the following:

• Set the threshold value for Broadcast packets on a 

per-port basis, to prevent Broadcast storms.

• Enable  Storm  Control 

per port, with limitations based on: Unknown Unicast, Multicast and 

Broadcast frames, Multicast and Broadcast frames, or Broadcast frames only.

Port — The port from which the Storm Control is enabled.
Broadcast Control — Enables or disables forwarding Broadcast packet types on the switch. 
Broadcast Mode — Sets the mode of Broadcast Storm Control based on the types of traffic 

selected. The possible options for types of traffic are Unknown Unicast, Multicast & Broadcast, and 

Broadcast only.