Aruba 2530 - Configuring a Broadcast Limit; Broadcast-Limit; Port Shutdown with Broadcast Storm

Configuring a broadcast limit
Broadcast-Limit on switches covered in this guide is configured on a per-port basis. You must be at the port
context level for this command to work, for example:
switch(config)#int 1
switch(int 1)# broadcast-limit 1
Broadcast-limit
Syntax:
broadcast-limit <0-99>
Enables or disables broadcast limiting for outbound broadcasts on a selected port on the switch. The value
selected is the percentage of traffic allowed, for example, broadcast-limit 5 allows 5% of the maximum
amount of traffic for that port. A value of zero disables broadcast limiting for that port.
NOTE:
You must switch to port context level before issuing the broadcast-limit command.
This feature is not appropriate for networks requiring high levels of IPX or RIP broadcast traffic.
Syntax:
show config
Displays the startup-config file. The broadcast limit setting appears here if enabled and saved to the startup-config
file.
Syntax:
show running-config
Displays the running-config file. The broadcast limit setting appears here if enabled. If the setting is not also saved
to the startup-config file, rebooting the switch returns broadcast limit to the setting currently in the startup-config
file.
For example, the following command enables broadcast limiting of 1 percent of the traffic rate on the selected port
on the switch:
switch(int 1)# broadcast-limit 1
For a one Gbps port this results in a broadcast traffic rate of ten Mbps.
Port shutdown with broadcast storm
A LAN broadcast storm arises when an excessively high rate of broadcast packets flood the LAN. Occurrence of
LAN broadcast storm disrupts traffic and degrades network performance. To prevent LAN traffic from being
disrupted, an enhancement of fault-finder commands adds new options, and the corresponding MIBs, that trigger
a port disablement when a broadcast storm is detected on that port.
Under this enhancement, the CLI commands given only supports broadcast traffic and not multicast and unicast
types of traffic.
The waiting period range for re-enabling ports is 0 to 604800 seconds. The default waiting period to re-enable a
port is zero which prevents the port from automatic re-enabling.
Chapter 3 Port Status and Configuration 67