Huawei Quidway S5600 Series Operation Manual page 455

Operation Manual – Multicast Protocol
Quidway S5600 Series Ethernet Switches-Release 1510
Operation
Limit
multicast groups that the
interface serves
Caution:
If the number of joined multicast groups on the interface exceeds the user-defined
limit, new groups are not allowed to join any more.
If you configure the number of IGMP groups on the interface to 1, the new group
takes the priority. That is, if a new group joins the interface, the former multicast
group will be replaced automatically and leaves the interface automatically.
If the number of existing IGMP multicast groups has exceeded the configured limit
on the number of joined multicast groups on the interface, the system will delete
some existing multicast groups automatically until the number of multicast groups
on the interface is conforming to the conferred limit.
6.2.4 Configuring Router Ports to Join the Specified Multicast Group
Generally, the host running IGMP will respond to the IGMP query packets of the
multicast switch. If the host cannot respond for some reason, the multicast switch may
think that there is no members of the multicast group in this network segment and then
cancel the corresponding paths.
In order to avoid such cases, you must configure a port of the VLAN interface of the
switch as a router port to add it to the multicast group. When the port receives IGMP
query packets, the multicast switch will respond to it. As a result, the network segment
that the Layer 3 interfaces lie in can continue to receive multicast packets.
Table 6-5 Configure router ports to join the specified multicast group
Operation
Enter system view
Enable
routing protocol
the range of
igmp
acl-number vlan vlan-id
system-view
the multicast multicast
routing-enable
Huawei Technologies Proprietary
Command
group-policy
Command
6-11
Chapter 6 IGMP Configuration
Description
Optional
By default, the filter is
not configured, that is,
any multicast group is
permitted on the port.
The port must belong
to the IGMP-enabled
VLAN specified in the
command. Otherwise,
the command does not
take effect.
Description
—
Required