Quick Reference Guide

178 PowerConnect B-Series TI24X Configuration Guide
53-1002269-02
Configuring static MAC entries
7
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
• On PowerConnect B-Series TI24X devices, this feature can be used to configure unicast MAC
addresses on one or more ports; Multicast addresses are not supported.
• PowerConnect B-Series TI24X 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 PowerConnect B-Series TI24X 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 VLAN-based
static MAC entries” on page 179.
Configuring a multi-port static MAC address
For example, to add a static entry for a server with a MAC address of 0045.5563.67ff and a priority
of 7, enter the following command.
PowerConnect(config)#static-mac-address 0045.5563.67ff ethernet 2 ethernet 3
ethernet 4 priority 7
To specify a range of ports, enter the following command.
PowerConnect(config)#static-mac-address 0045.5563.67ff ethernet 2 to 6 priority 7
Syntax: [no] static-mac-address <mac-addr> ethernet <portnum> ethernet <portnum> ethernet
<portnum> …. [priority <num>]
or
Syntax: [no] static-mac-address <mac-addr> ethernet<portnum> to ethernet <portnum> [priority
<num>]
The <portnum> parameter is a valid port number.
The priority <num> is optional and can be a value from 0 – 7 (0 is lowest priority and 7 is highest
priority). The default priority is 0.