Configuration Guide User guide

566 FastIron Configuration Guide
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Flow-based MAC address learning
Configuring flow-based MAC address learning
To configure flow-based MAC address learning, simply enable it globally. If necessary, increase the
capacity of the MAC address table as well.
Enabling flow-based MAC address learning
To enable flow-based MAC address learning, enter the following command at the Global CONFIG
level of the CLI.
Brocade(config)#mac-learning-flow-based
This command enables flow-based MAC address learning. All dynamically-learned MAC addresses
are flushed from the hardware and software MAC tables and are subsequently learned using
flow-based MAC address learning.
Syntax: [no] mac-learning-flow-based
Use the no form of the command to disable flow-based MAC address learning. When disabled, all
dynamically-learned MAC addresses are flushed from the hardware and software MAC tables and
are subsequently learned using global MAC address learning.
Increasing the capacity of the MAC address table (optional)
After enabling support for flow-based MACs, you can increase the capacity of the MAC address
table of up to 32K MAC addresses. By default, up to 32K MAC addresses are supported.
NOTE
FCX devices do not support flow-based MACs and the capacity of the MAC address table cannot be
altered on FCX devices.
To increase the capacity of the MAC table, enter commands such as the following.
Brocade(config)#system-max mac 32768
Brocade(config)#write memory
Brocade(config)#exit
Brocade#reload
NOTE
You must save the configuration and reload the software to place the system-max mac change into
effect.
Syntax: system-max mac <max-flow-MACs>
The <max-flow-MACs> parameter specifies the maximum number of MAC addresses in the MAC
table. For flow-based MACs, the minimum value is 16K and the default value is 32K.
Use the command show default values to display the default, maximum, and currently configured
values for the MAC address table.