H3C S3100 Series Command Manual page 338

Command Manual (For Soliton) – Multicast
H3C S3100 Series Ethernet Switches
By default, no multicast group filter is configured.
The ACL rule defines a multicast address or a multicast address range (for example
224.0.0.1 to 239.255.255.255) and is used to:
Allow the port(s) to join only the multicast group(s) defined in the rule by a permit
statement.
Inhibit the port(s) from joining the multicast group(s) defined in the rule by a deny
statement.
Note:
A port can belong to multiple VLANs, you can configure only one ACL rule per VLAN
on a port.
If no ACL rule is configured, all the multicast groups will be filtered.
Since most devices broadcast unknown multicast packets by default, this function is
often used together with the function of dropping unknown multicast packets to
prevent multicast streams from being broadcast as unknown multicast packets to a
port blocked by this function.
The configuration performed in system view takes effect on all ports of the switch if
no VLAN is specified; if one or more VLANs are specified, the configuration takes
effect on all ports in the specified VLAN(s).
The configuration performed in Ethernet port view takes effect on the port no matter
which VLAN it belongs to if no VLAN is specified; if one or more VLANs are specified,
the configuration takes effect on the port only if the port belongs to the specified
VLAN(s).
Examples
# Configure a multicast group filter to allow receivers attached to Ethernet 1/0/1 to
access the multicast streams for groups 225.0.0.0 to 225.255.255.255.
Configure ACL 2000.
<Sysname>system-view
System View: return to User View with Ctrl+Z.
[Sysname] acl number 2000
[Sysname-acl-basic-2000] rule permit source 225.0.0.0 0.255.255.255
[Sysname-acl-basic-2000] quit
Create VLAN 2 and add Ethernet1/0/1 to VLAN 2.
[Sysname] vlan 2
[Sysname-vlan2] port Ethernet 1/0/1
[Sysname-vlan2] quit
Apply ACL 2000 on Ethernet1/0/1 to allow it to join only the IGMP multicast groups
defined in the rule of ACL 2000.
Chapter 1 IGMP Snooping Configuration
1-10
Commands