DES-3010F/DES-3010FL/DES-3010G/DES-3016/DES-3018/DES-3026 Fast Ethernet Switch Manual
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Figure 10- 1. Traffic Control Settings window
The Switch will also scan and monitor packets coming into the Switch by monitoring the Switch’s chip
counter. This method is only viable for Broadcast and Multicast storms because the chip only has counters
for these two types of packets. Once a storm has been detected (that is, once the packet threshold set below
has been exceeded), the Switch will shutdown the port to all incoming traffic with the exception of STP
BPDU packets, for a time period specified using the
Count Down
field. Although the Count Down field can
be specified, users are advised to disable this feature and assess the situation before recovering the port. The
Count Down field may be disabled by entering a value of 0 (zero).
If this field times out and the packet storm continues, the port will be placed in a Shutdown Forever mode
which will produce a warning message to be sent to the Trap Receiver. Once in Shutdown Forever mode, the
user may recover the affected ports by using the Traffic Control Recover section of the previous window
and recover the ports shutdown forever. To utilize this method of Storm Control, choose the
Shutdown
option of the
Action
field in the window below.
Use the
Traffic Control
menu to enable or disable storm control and adjust the threshold for multicast and
broadcast storms, as well as any unknown storms. To view the window above, click
Security > Traffic
Control
:
To configure
Traffic Control
, enable or disable the
Broadcast Storm
,
Multicast Storm
and
Unknown
Unicast Storm
using their corresponding pull-down menus. Click
Apply
to implement changes made.
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