Packet Storm Control Commands - Extreme Networks EAS 100-24t Switch CLI Manual

Example usage:
To show the MSTP configuration identification currently set on the switch:
#show stp mst_config_id
Command: show stp mst_config_id
Current MST Configuration Identification
----------------------------------------
Configuration Name : 00:53:13:1A:33:24
MSTI ID VID list
------- ------------------------------------------------
CIST
#

Packet Storm Control Commands

On a computer network, packets such as Multicast packets and Broadcast packets continually flood the
network as normal procedure. At times, this traffic may increase due to a malicious endstation on the
network or a malfunctioning device, such as a faulty network card. Therefore, switch throughput
problems will arise and consequently affect the overall performance of the network. To help rectify this
packet storm, the switch will monitor and control the situation.
The packet storm is monitored to determine if too many packets are flooding the network, based on the
threshold level provided by the user. Once a packet storm has been detected, the switch will drop
packets coming into the switch until the storm has subsided. This method can be utilized by selecting
the Drop option of the Action field in the table below. The switch will also scan and monitor packets
coming into the switch by monitoring the switch's chip counter. This method is only available 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 CountDown field. If this field times out and the packet storm continues, the
port will be placed in a Rest mode which will produce a warning message. Once in Rest mode, the only
methods of recovering this port are (1) auto-recovery after 5 minutes or (2) to manually recoup it. This
will toggle the enabled ports to disable and toggle the disabled ports to enable. To utilize this method of
Storm Control, choose the Shutdown option of the Action field in the table below.
The Packet Storm Control commands in the CLI are listed (along with the appropriate parameters) in
the following table:
Command
config traffic control
show traffic control
Extreme Networks EAS 100-24t Switch CLI Manual
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Parameters
[<portlist> | all] {broadcast [enable | disable] | multicast [enable | disable] |
unicast [enable | disable] | action [drop | shutdown] | threshold <value 64-
1000000> | time_interval <secs 5-30> | countdown [<minutes 0> | <minutes 5-
30>]}
{<portlist>}
Packet Storm Control Commands
Revision Level :0
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