Multi-port static mac address, Configuring a multi-port static mac address – Brocade TurboIron 24X Series Configuration Guide User Manual
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Brocade TurboIron 24X Series Configuration Guide
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Configuring static MAC entries
You can manually input the MAC address of a device to prevent it from being aged out of the system
address table.
This option can be used to prevent traffic for a specific device, such as a server, from flooding the
network with traffic when it is down. Additionally, the static MAC address entry is used to assign
higher priorities to specific MAC addresses.
You can specify traffic priority (QoS) and VLAN membership (VLAN ID) for the MAC Address as well
as specify the device type of either router or host.
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 system parameter default settings”
Multi-port static MAC address
Many applications, such as Microsoft NLB, Juniper IPS, and Netscreen Firewall, use the same MAC
address to announce load-balancing services. As a result, a switch must be able to learn the same
MAC address on several ports. Multi-port static MAC allows you to statically configure a MAC
address on multiple ports using a single command.
Configuration notes
•
This feature can be used to configure unicast MAC addresses on one or more ports; Multicast
addresses are not supported.
•
Devices support a maximum of 15 multi-port static MAC addresses.
•
Hosts or physical interfaces normally join multicast groups dynamically, but you can also
statically configure a host or an interface to join a multicast group.
•
The following limitations apply to devices have the source_port_group_suppression_enable
flag enabled:
•
This feature is not supported on ports that are already deployed on a trunk. If attempted,
the system will return a port overlap error.
•
External trunks cannot be created and deployed on ports on which static MAC addresses
are configured.
•
This feature is not supported on a set of ports that overlap with a set of ports on which
static MAC entries are configured, unless the port list in both sets is identical
NOTE
For more information about source port group suppression, refer to
Configuring a multi-port static MAC address
For example, to add a static entry for a server with a MAC address of 0000.0063.67ff and a priority
of 7, enter the following command.
TurboIron(config)#static-mac-address 0000.0063.67ff ethernet 2 ethernet 3
ethernet 4 priority 7
To specify a range of ports, enter the following command.
TurboIron(config)#static-mac-address 0000.0063.67ff ethernet 2 to 6 priority 7