Preparing For Configurations; Default Configurations Of Storm Control - Raisecom ISCOM2600G-HI (A) Series Configuration Manual

Raisecom
ISCOM2600G-HI (A) Series Configuration Guide
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Principles of storm control
Storm control allows an interface to filter broadcast packets received by the interface. After
storm control is enabled, when the number of received broadcast packets reaches the pre-
configured threshold, the interface will automatically discard the received packets. If storm
control is disabled or if the number of received broadcast packets does not reach the pre-
configured threshold, the broadcast packets are broadcasted to other interfaces of the switch
properly.
Types of storm control
Storm controls is performed in the following forms:
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The ISCOM2600G-HI series switch supports BPS and PPS storm control.

10.6.2 Preparing for configurations

Scenario
Configuring storm control on Layer 2 devices can prevent broadcast storm from occurring
when broadcast packets increase sharply on the network. In this case, normal packets can be
properly forwarded.
Prerequisite
N/A

10.6.3 Default configurations of storm control

Default configurations of storm control are as below.
Broadcast storm control
Storm control enhancement
Multicast and unknown unicast storm control
Bytes of frame gap and preamble
Storm control mode
Number of allowed storm packets per second
DLF packet forwarding
Broadcast packets: packets of which the destination MAC is a broadcast address. If these
packets are excessive in a period, broadcast storm may occur.
Radio (bandwidth ratio): the allowed percentage of broadcast, unknown multicast, or
unknown unicast traffic to total bandwidth
Bits Per Second (BPS): the number of bits allowed to pass per second
Packet Per Second (PPS): the number of packets allowed to pass per second
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Function
10 Security
Default value
Enable
Disable
Disable
20 bytes
pps
1024 pps
Enable
427