Foundry Networks Switch and Router Installation And Configuration Manual page 1030

Foundry Switch and Router Installation and Configuration Guide
Syntax
Use the following CLI commands or Web management interface panels to configure multicast filters.
CLI syntax
BigIron(config)# multicast filter <filter-id> any | ip udp mac
<multicast-address> | any [mask <mask>] [vlan <vlan-id>]
exclude-ports ethernet <portnum> to <portnum>
Or
exclude-ports ethernet <portnum> ethernet <portnum>
NOTE: This is the same command syntax as that used for configuring port-based VLANs. Use the first
command for adding a range of ports. Use the second command for adding separate ports (not in a range). You
also can combine the syntax. For example, you can enter exclude-ports ethernet 1/4 ethernet 2/6 to 2/9.
Address-Lock Filters
Address-lock filters limit the number of MAC addresses that can be learned on a port. The port forwards only
those packets that contain one of the source MAC addresses learned by the port. The port drops other packets.
In addition, the device generates an SNMP trap for other packets received by the port.
Figure C.4 shows an example of an address-lock filter. In this example, the Foundry device is configured to learn
only two MAC addresses on port 1/1. After the device learns two addresses, port 1/1 can forward only a packet
whose source address is one of the two learned addresses. The port drops all other packets. This applies even
to MAC broadcasts. If one of the packets learned on the port is not addressed to the MAC broadcast address, the
port cannot forward MAC broadcasts.
The device learns MAC addresses from the source-MAC-address field of inbound packets received on the port.
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Table C.13: Multicast Filters
Web management links
Not available
December 2000