Configuration Guide User guide

FastIron Configuration Guide 561
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Static MAC entry configuration
Displaying the MAC address table
To display the MAC table, enter the show mac-address command.
In the output of the show mac-address command, the Type column indicates whether the MAC
entry is static or dynamic. A static entry is one you create using the static-mac-address command.
A dynamic entry is one that is learned by the software from network traffic.
The output of the show mac-address command on FESX and FSX devices include an Index column
which indicates the index where the entry exists in the hardware MAC table.
NOTE
The show mac-address command output does not include MAC addresses for management ports,
since these ports do not support typical MAC learning and MAC-based forwarding.
Static MAC entry configuration
Static MAC addresses can be assigned to Brocade devices.
NOTE
Brocade devices running Layer 3 code also support the assignment of static IP Routes, static ARP,
and static RARP entries. For details on configuring these types of static entries, refer to “Adding a
static IP route” on page 1186 and “Adding a static ARP entry” on page 1187.
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” on page 578.
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.
Brocade#show mac-address
Total active entries from all ports = 3
Total static entries from all ports = 1
MAC-Address Port Type VLAN
1234.1234.1234 15 Static 1
0004.8038.2f24 14 Dynamic 1
0004.8038.2f00 13 Dynamic 1
0010.5a86.b159 10 Dynamic 1