Brocade Multi-Service IronWare Administration Guide (Supporting R05.6.00) - Manual (Page 67)

Multi-Service IronWare Administration Guide 49
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Configuring static MAC addresses
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Brocade(config)# route-only
This will change the route-only behavior at the global level.
Are you sure? (enter ‘y’ or ‘n’): y
Global ‘no route-only committed.
Syntax: [no] route-only
NOTE
On the Brocade NetIron XMR and Brocade MLX series devices, route-only is the default condition.
Because route-only is the default condition, it will not be displayed in the configuration. If you use no
route-only to enable switching, the no route-only command will be displayed in the configuration.
NOTE
On the Brocade NetIron CES device, route-only is disabled by default. Therefore, if route-only is
enabled on a Brocade NetIron CES device, it will be displayed in the configuration.
To enable Layer 2 switching only on a specific interface, go to the Interface configuration level for
that interface, and add the no route-only command. The following commands show how to enable
Layer 2 switching on port 3/2.
Brocade(config)# interface ethernet 3/2
Brocade(config-if-e10000-3/2)# no route-only
Syntax: [no] route-only
To re-enable the default route-only condition on port 3/2, enter the route-only command as shown.
Brocade(config-if-e10000-3/2)# route-only
When route-only is enabled on a physical interface, incoming unknown unicast packets are not
sent to the CPU and are dropped locally by the hardware.
NOTE
Configuring route-only on a physical interface affects incoming frames only. In other words, interface
route-only disables L2 switching for incoming frames but does not disable L2 switching for outgoing
frames. If the route-only interface is a member of a VLAN, the interface will still transmit frames
received on other interfaces of that VLAN if those other interfaces still have L2 switching enabled.
To prevent this from happening, make sure that any interface you have configured for route-only are
not also members of VLANs where you are intentionally performing L2 switching.
Configuring static MAC addresses
You can assign static MAC addresses to ports of a Brocade device.
You can manually input the MAC address of a device to prevent it from being aged out of the
system address table, to prevent traffic for a specific device, such as a server, from flooding the
network with traffic when it is down, and to assign higher priorities to specific MAC addresses.
Static MAC addresses are configured within a specified VLAN including the default VLAN 1.
Optionally you can specify a port priority (QoS).
The default and maximum configurable MAC table sizes can differ depending on the device. To
determine the default and maximum MAC table sizes for your device, display the system parameter
values. Refer to
“Displaying and modifying default settings for system parameters” on page 43.