Specifications

Traffic Control
Extreme Networks EAS 100-24t Switch Software Manual
97
Click on the Apply button to accept the changes made.
NOTE
Traffic Control cannot be implemented on ports that are set for Link Aggregation (Port Trunking).
Action Select the method of traffic Control from the pull-down menu. The choices are:
Drop – Utilizes the hardware Traffic Control mechanism, which means the
Switch’s hardware will determine the Packet Storm based on the Threshold
value stated and drop packets until the issue is resolved.
Shutdown – Utilizes the Switch’s software Traffic Control mechanism to
determine the Packet Storm occurring. Once detected, the port will deny all
incoming traffic to the port except STP BPDU packets, which are essential in
keeping the Spanning Tree operational on the Switch. If the Countdown timer
has expired and yet the Packet Storm continues, the port will be placed in
Shutdown Rest mode. The port will be recovered after 5 minutes, or the user
manually resets the port using the Port Configuration window in the
Configuration folder. The user has to disable and enable the port for it to
return to the Enabled status. Choosing this option obligates the user to
configure the Interval setting as well, which will provide packet count
samplings from the Switch’s chip to determine if a Packet Storm is occurring.
Count Down (0 or 5-30) The Count Down timer is set to determine the amount of time, in minutes, that
the Switch will wait before shutting down the port that is experiencing a traffic
storm. Only the switch continues to experience a traffic storm during this
countdown period and the switch will shutdown the port. This parameter is
only useful for ports configured as Shutdown in their Action field and therefore
will not operate for Hardware based Traffic Control implementations. The
possible time settings for this field are 0, 5 to 30 minutes. Zero means that the
port will not enter shutdown rest mode.
Time Interval (5-30) The Interval will set the time between Multicast and Broadcast packet counts
sent from the Switch’s chip to the Traffic Control function. These packet
counts are the determining factor in deciding when incoming packets exceed
the Threshold value. The Interval may be set between 5 and 30 seconds with
the default setting of 5 seconds.
Threshold (64- 1000000) This value represents the upper threshold at which the specified traffic control
is switched on. The threshold value is measured in Kbit/sec when the action is
set to drop mode; it is measured in pps(packets/sec) when the action is set to
shutdown mode. That is, the number of broadcast/multicast/Unknown unicast
packets, received by the Switch that will trigger the storm traffic control
measures.
The configurable threshold range is from 64 to 1000000 with a default setting
of 64.
Actual rate = |rate entered/ minimum granularity|* minimal granularity, for
example: 64=|100/64|*64
Storm Control Type Select the type of Storm Type to detect: Broadcast, Multicast, Unknown
Unicast, Broadcast + Multicast, Broadcast + Unknown Unicast, Multicast +
Unknown Unicast, Broadcast + Multicast + Unknown Unicast, or None. Once
selected, use the pull-down menu to enable or disable this storm detection.
Parameter Description