Allied Telesis AT-S39 - Manual (Page 236)

Section III: Web Browser Management
236
Configuring the Interval Timer
The interval timer defines the time period used in counting the number
of broadcast packets on a port. Broadcast frames exceeding the
maximum number during the specified timer interval are discarded by
the port and are not forwarded by the switch. You can specify a different
interval timer for different port speeds.
To specify an interval timer, perform the following procedure:
1. From the Home page, select Configuration.
The System menu option is selected by default along with the
General tab when you open the Configuration page. If they are
not already selected, select them now.
2. In the Broadcast Storm Control section of the window tab, enter
values for the three interval timers.
You can enter a different interval timer for each possible port
speed on the switch: 10, 100, and 1000 Mbps. (1000 Mbps applies
only to GBIC modules in an AT-8024GB switch.) A value for an
interval timer applies to all ports operating at the corresponding
speed.
The values for 10 and 100 Mbps ports are in milliseconds. The
values for 1000 Mbps ports are in microseconds.
When entering a value, be aware that the management software
will multiple your value as follows:
❑ 10 Mbps - 10x
❑ 100 Mbps - 1x
❑ 1000 Mbps - 100x
For example, if you enter “20” for the interval timer for 10 Mbps
ports, the management software multiples the value by 10. The
result would be an interval timer of 200 milliseconds for ports
operating at 10 Mbps.
The default value is “0” for all timers. A value of “0” disables the
broadcast frame control feature for ports operating at the
corresponding timer speed.
3. After you have entered your values, click Apply.
4. Go to the next procedure to set values for the maximum number of
broadcast frames the ports on the switch will accept.