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3 displaying and maintaining multicast mac address – H3C Technologies H3C S3100 Series Switches User Manual

Page 259

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Operation Manual – Multicast

H3C S3100-52P Ethernet Switch

Chapter 4 Multicast MAC Address Entry

Configuration

4-2

Operation

Command

Description

Create a multicast MAC

address entry.

mac

-address multicast

mac-address

vlan vlan-id

Required
The

mac-address

argument must be a

multicast MAC address
The vlan-id argument is

the ID of the VLAN to

which the port belongs.

Note:

z

If the multicast MAC address entry to be created already exists, the system gives
you a prompt.

z

If a multicast MAC address is added manually, the switch will not learn this multicast
MAC address again through IGMP Snooping. The undo mac-address multicast
command is used to delete the multicast MAC address entries created by the
mac

-address multicast command manually; however, it cannot be used to delete

the multicast MAC address entries learned by the switch.

z

If you want to add a port to a multicast MAC address entry created through the
mac

-address multicast command, you must delete this entry first, create this entry

again, and then add the specified port to the forwarding ports of this entry.

z

The system does not support adding multicast MAC addresses to IRF ports. If a port
is already an IRF port, the system will prompt that you cannot add multicast MAC
addresses to this port.

z

You cannot enable link aggregation on a port on which you have configured a
multicast MAC address; and you cannot configure a multicast MAC address on an
aggregation port.

4.3 Displaying and Maintaining Multicast MAC Address

After the configuration above, you can execute the display command in any view to
verify the configuration effect by checking the displayed information.

Table 4-3

Display and maintain multicast MAC address

Operation

Command

Description

Display the multicast

MAC address

entry/entries manually

configured

display mac-address
multicast

[ static

{ { { mac-address vlan
vlan-id | vlan vlan-id

}

[ count ] } | count } ]

You can use the display

command in any view.