Chapter 12: Storm Control
150
Overview
The features available in the AT-S116 Management Software allow you to
limit Ethernet traffic within your switch based on specific criteria. You can
use Storm Control to limit the bandwidth of various types of Ethernet
packets. With Ingress and Egress Rate Limiting, you can limit the traffic
volume at the input or output ports respectively.
The Storm Control feature allows you regulate the reception rate of
broadcast, multicast, and destination lookup failure (DLF) packets. The
AT-S116 Management Software allows you to set separate limits for each
port beyond which each of the different packet types are discarded. Each
setting can be configured on individual ports or on all of the ports of the
AT-GS950/48 switch. Traffic is measured in packets per second. See the
following definitions for more information about these settings.
Destination Lookup Failure
- The Destination Lookup Failure
(DLF) setting is concerned with comparing the destination MAC
address of a packet received by the switch to the forwarding
database. When the AT-GS950/48 switch receives a packet, it
scans the forwarding database and looks for a match to the
destination MAC address in the received packet. If the MAC
address is not present, then the packet is flooded according to the
VLAN rules. By default, this setting is disabled on the switch which
means that all DLF packets are automatically forwarded according
to the VLAN rules.
Broadcast Setting
- The broadcast setting applies to allowing or
denying broadcast packets on each port.
Multicast Setting
- The multicast setting applies to allowing or
denying multicast packets on each port.
Threshold Level
-
In regards to Bandwidth control, the threshold
level is the number of DLF, broadcast, and multicast packets that
are sent by or received from a port. This value is measured in
packets per second. You can set the threshold level from 1 to
22194 packets per second.
Note
The packet sizes affected by this threshold level can vary in size
from 64 Bytes to 1024 Bytes.
Summary of Contents for AT-GS950/48
Page 10: ...Contents 10...
Page 14: ...Figures 14...
Page 16: ...List of Tables 16...
Page 20: ...Preface 20...
Page 22: ...22...
Page 62: ...Chapter 2 System Configuration 62...
Page 64: ...64...
Page 108: ...Chapter 6 Static Port Trunking 108...
Page 124: ...Chapter 8 Port Mirroring 124...
Page 186: ...Chapter 13 Virtual LANs 186...
Page 194: ...Chapter 14 GVRP 194...
Page 210: ...210...
Page 224: ...Chapter 16 SNMPv1 and v2c 224...
Page 242: ...Chapter 17 SNMPv3 242...
Page 258: ...Chapter 18 Access Control Configuration 258...
Page 272: ...Chapter 19 RMON 272...
Page 302: ...Chapter 21 Security 302...
Page 324: ...Chapter 23 LLDP 324...
Page 338: ...338...
Page 356: ...Chapter 27 LED ECO Mode 356...
Page 360: ...Chapter 28 Energy Efficient Ethernet 360...
Page 370: ...Chapter 29 Rebooting the AT GS950 48 370...
Page 392: ...Appendix A MSTP Overview 392...