Using Static Multicast Mac Addresses; Configuring Static Multicast Mac Addresses - Alcatel-Lucent OmniSwitch 6850-48 Network Configuration Manual

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Using Static Multicast MAC Addresses

Using static multicast MAC addresses allows you to send traffic intended for a single destination multi-
cast MAC address to selected switch ports within a given VLAN. To specify which ports will receive the
multicast traffic, a static multicast address is assigned to each selected port for a given VLAN. The ports
associated with the multicast address are then identified as egress ports. When traffic received on ports
within the same VLAN is destined for the multicast address, the traffic is forwarded only on the egress
ports that are associated with the multicast address.
When defining a static multicast MAC address for a particular port and VLAN, consider the following:
•
A MAC address is considered a multicast MAC address if the least significant bit of the most signifi-
cant octet of the address is enabled. For example, MAC addresses with a prefix of 01, 03, 05, 13, etc.,
are multicast MAC addresses.
•
If a multicast prefix value is not present, then the address is treated as a regular MAC address and not
allowed when using the mac-address-table static-multicast command.
•
Multicast addresses within the following ranges are not supported:
01:00:5E:00:00:00 to 01:00:5E:7F:FF:FF
01:80:C2:XX.XX.XX
33:33:XX:XX:XX:XX
•
Configuring static multicast addresses is only supported on non-mobile ports.
•
In addition to configuring the same static multicast address for multiple ports within a given VLAN, it
is also possible to use the same multicast address across multiple VLANs.
•
The specified port or link aggregate ID must already belong to the specified VLAN. Use the
vlan port default command to assign a port or link aggregate to a VLAN before you configure the
static multicast address.

Configuring Static Multicast MAC Addresses

The mac-address-table static-multicast
and assign the address to one or more egress ports within a specified VLAN. For example, the following
command assigns the multicast address 01:25:9a:5c:2f:10 to port 1/24 in VLAN 20:
-> mac-address-table static-multicast 01:25:9a:5c:2f:10 1/24 20
To assign a multicast address to more than one port, enter a range of ports and/or multiple port entries on
the same command line separated by a space. For example, the following command assigns the multicast
address 01:25:9a:5c:2f:10 to port 1/24 and ports 2/1 through 2/6 in VLAN 20:
-> mac-address-table static-multicast 01:25:9a:5c:2f:10 1/24 2/1-6 20
Use the no form of the
address entries. For example, the following command deletes a static multicast address that is assigned to
port 2 on slot 3 for VLAN 855:
-> no mac-address-table static-multicast 01:00:02:CE:10:37 3/2 855
OmniSwitch AOS Release 6 Network Configuration Guide
command is used to define a destination multicast MAC address
mac-address-table static-multicast
Using Static Multicast MAC Addresses
command to delete static multicast MAC
September 2009 page 2-7