Managing Source Learning Using Static Multicast MAC Addresses
OmniSwitch 6800/6850/9000 Network Configuration Guide March 2008 page 1-7
If a a MAC address, slot/port and VLAN ID are not specified with this form of the command, then all
static multicast addresses are deleted. For example, the following command deletes all static MAC
addresses, regardless of their slot/port or VLAN assignments:
-> no mac-address-table static-multicast
To verify the static MAC address configuration and other table entries, use the show mac-address-table
and show mac-address-table static-multicast commands. For more information about these commands,
see the OmniSwitch CLI Reference Guide.
Static Multicast MAC Addresses on Link Aggregate Ports
Static multicast MAC addresses are not assigned to physical ports that belong to a link aggregate. Instead,
they are assigned to a link aggregate ID that represents a collection of physical ports. This ID is specified
at the time the link aggregate of ports is created and when using the mac-address-table static-multicast
command.
To configure a static multicast MAC address on a link aggregate ID, use the mac-address-table static-
multicast command with the linkagg keyword to specify the link aggregate ID. For example, the follow-
ing command assigns a static multicast MAC address to link aggregate ID 2 associated with VLAN 455:
-> mac-address-table static-multicast 01:95:2A:00:3E:4C linkagg 2 455
For more information about configuring a link aggregate of ports, see Chapter 13, “Configuring Static
Link Aggregation” and Chapter 14, “Configuring Dynamic Link Aggregation.”
ASCII-File-Only Syntax
When a static multicast MAC address is configured and saved (typically through the snapshot or write
memory commands), the mac-address-table static-multicast command captured in the ASCII text file or
boot.cfg file will include an additional group parameter. This parameter indicates the number of the
multicast group that the switch has assigned to the multicast MAC address for the given VLAN associa-
tion. For example:
-> mac-address-table static-multicast 01:25:9a:5c:2f:10 1/24 2/1-6 20 group 1
In this example, the multicast MAC address, 01:25:9a:5c:2f:10, is associated with ports 1/24 and 2/1
through 2/6 in VLAN 20.
The additional group parameter value shown in the example indicates that the
switch will assign the multicast-VLAN association created with the mac-address-table static-multicast
to multicast group one.
Note that if the port assigned to a multicast MAC address is down or administratively disabled when the
configuration snapshot or write memory command is used, the multicast MAC address is not saved to
the resulting ASCII file or boot.cfg file.
Each multicast MAC address association with a VLAN is treated as a unique instance and is assigned a
multicast group number specific to that instance. This is also the case when the same multicast address is
associated with more than one VLAN; each VLAN association is assigned a multicast group number even
though the MAC address is the same for each instance. Note that up to 1022 multicast address-VLAN
associations are supported per switch.
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