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Chapter 4
Configuration Using the Web-based Utility
23
Business Series Smart Gigabit Ethernet Switch
Security > IP Access List
Use the IP Access List (also known as Management Access
List) screen to specify IP addresses that are to be allowed
to manage the device, using an IP address and wildcard
mask.
Security > IP Access List
IP Address Enter the IP address to be allowed.
Wildcard Mask Enter the IP address wildcard mask.
Wildcard masks specify which bits are used and which
bits are ignored. A wild card mask of 255.255.255.255
indicates that no bit is important. A wildcard of 0.0.0.0
indicates that all the bits are important. For example, if the
source IP address is 149.36.184.198 and the wildcard mask
is 255.36.184.00, the first eight bits of the IP address are
ignored, while the last eight bits are used.
Add to List Click this button to save the IP address and
Wildcard Mask. The information will appear in the list at
the bottom of the screen.
The bottom portion of the IP Access List screen displays the
current IP access list, where each entry consists of an IP
Address and Wildcard Mask. To delete an entry from the
list, select it and click Delete.
Click Save Settings to apply the changes, or Cancel
Changes to cancel the changes.
Security > Storm Control
The Storm Control screen is used to configure broadcast
and multicast storm control.
Security > Storm Control
Storm Control enables limiting the amount of Multicast and
Broadcast frames accepted and forwarded by the Switch.
A Broadcast Storm results when an excessive amount of
broadcast messages is simultaneously transmitted across
a network by a single port. Forwarded message responses
are heaped onto the network, straining network resources
or causing the network to time out.
To enable Storm Control on a port, you specify the packet
type (broadcast/multicast) and maximum transmission
rate. The system measures the incoming Broadcast and
Multicast frame rates separately on each port and discards
frames when the rate exceeds the specified maximum.
Interface Indicates the interface from which storm
control is enabled.
Port Select the port from the drop-down menu.
Broadcast Control Select the checkbox to apply
Broadcast control on the selected interface. Broadcast
control limits the amount of Broadcast packet types to be
forwarded. The default is not selected (disabled).
Mode Specifies the Broadcast mode currently enabled
on the device. The possible values are:
Multicast & Broadcast Counts Broadcast and
Multicast traffic together.
Broadcast Only Counts only Broadcast traffic.
Rate Threshold The maximum rate (packets per second)
at which unknown packets are forwarded. The ranges are
70 kbps to 100 Mbps for FE ports, and 3.5 to 100 Mbps
for GE ports. The default value is 3500 kbps.
The Update button adds the Storm Control settings to the
Storm Control table at the bottom of the screen.
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