3Com 3c17300 Implementation Guide - Page 18

Broadcast Storm Control, VLANs, Status Monitoring and Statistics, Setting Up Virtual

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20 CHAPTER 1: SWITCH FEATURES OVERVIEW For more information about RMON and Event Notification, see Chapter 7 "Status Monitoring and Statistics". Broadcast Storm Control Broadcast Storm Control is a system that monitors the level of broadcast traffic on that port. If the broadcast traffic level rises to a pre-defined number of frames per second (threshold), the broadcast traffic on the port is blocked until the broadcast traffic level drops below the threshold. This system prevents the overwhelming broadcast traffic that can result from network equipment which is faulty or configured incorrectly. VLANs A Virtual LAN (VLAN) is a flexible group of devices that can be located anywhere in a network, but which communicate as if they are on the same physical segment. With VLANs, you can segment your network without being restricted by physical connections - a limitation of traditional network design. As an example, with VLANs you can segment your network according to: ■ Departmental groups ■ Hierarchical groups ■ Usage groups For more information about VLANs, see Chapter 8 "Setting Up Virtual LANs".

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20
C
HAPTER
1: S
WITCH
F
EATURES
O
VERVIEW
For more information about RMON and Event Notification, see
Chapter 7
“
Status Monitoring and Statistics
”
.
Broadcast Storm
Control
Broadcast Storm Control is a system that monitors the level of broadcast
traffic on that port.
If the broadcast traffic level rises to a pre-defined
number of frames per
second (threshold), the broadcast traffic on the port
is blocked until the broadcast
traffic level drops below the threshold.
This
system prevents the overwhelming broadcast traffic that can result from
network equipment which is faulty or configured incorrectly.
VLANs
A Virtual LAN (VLAN) is a flexible group of devices that can be located
anywhere in a network, but which communicate as if they are on the
same physical segment. With VLANs, you can segment your network
without being restricted by physical connections — a limitation of
traditional network design. As an example, with VLANs you can segment
your network according to:
■
Departmental groups
■
Hierarchical groups
■
Usage groups
For more information about VLANs, see
Chapter 8
“
Setting Up Virtual
LANs
”
.