H3C S7500 Series Ethernet Switches Command Manual

Table Of Contents
Command Manual – Multicast
H3C S7500 Series Ethernet Switches
Chapter 2 IGMP Snooping Configuration
Commands
2-7
Examples
# Allow Ethernet1/0/1 to join up to 200 multicast groups.
<H3C> system-view
System View: return to User View with Ctrl+Z.
[H3C] interface Ethernet 1/0/1
[H3C-Ethernet1/0/1] igmp-snooping group-limit 200
2.1.8 igmp-snooping group-policy
Syntax
igmp-snooping group-policy acl-number [ vlan vlan-list ]
undo igmp-snooping group-policy [ vlan vlan-list ]
View
System view, Ethernet port view
Parameters
acl-number: Basic ACL number, in the range of 2000 to 2999.
vlan-list: Multiple VLANs in the form of vlan-list = { vlan-id [ to vlan-id ] } & < 1-10 >. The
vlan-id argument is the ID of a VLAN, in the range of 1 to 4094. &<1-10> means that
you can provide this argument repeatedly for up to ten times.
Description
Use the igmp-snooping group-policy command to configure an IGMP Snooping
filtering ACL.
Use the undo igmp-snooping group-policy command to remove the IGMP Snooping
filtering ACL.
By default, no IGMP Snooping filtering ACL is configured.
You can use the IGMP Snooping filter feature to configure multicast filtering ACLs for
users connected to different switch ports so as to limit the multicast programs the users
can access. With this feature enabled, you can treat different VoD users differently by
allowing them to access the multicast programs in different multicast groups.
In practice, when a user orders a multicast program, an IGMP host report message is
generated. When the message arrives at the switch, the switch examines the multicast
filtering ACL configured on the access port to determine whether the port can join the
corresponding multicast group or not. If yes, it adds the port to the forwarding port list of
the multicast group. If not, it drops the IGMP host report message and does not forward
the corresponding data stream to the port. In this way, you can control the multicast
programs that users can access.