Configuring Simulated Joining - H3C S9500 Series Operation Manual

Operation Manual – IGMP Snooping
H3C S9500 Series Routing Switches
Follow these steps to configure static ports:
Enter system view
Enter the
corresponding
view
Configure the port(s) as static
member port(s)
Configure the port(s) as static
router port(s)
Note:
A static (S, G) joining configuration can take effect only if a valid multicast source
address is specified and IGMP Snooping version 3 is currently running on the
switch.
A static member port does not respond to queries from the IGMP querier; when
static (*, G) or (S, G) joining is enabled or disabled on a port, the port does not send
an unsolicited IGMP report or an IGMP leave message.
Static member ports and static router ports never age out. To remove such a port,
you need to use the corresponding undo command.

1.4.3 Configuring Simulated Joining

Generally, a host running IGMP responds to IGMP queries from the IGMP querier. If a
host fails to respond due to some reasons, the multicast router may deem that no
member of this multicast group exists on the network segment, and therefore will
remove the corresponding forwarding path.
To avoid this situation from happening, you can enable simulated joining on a port of
the switch, namely configure the port as a simulated member host for a multicast group.
When an IGMP query is received, the simulated host gives a response. Thus, the
switch can continue receiving multicast data.
A simulated host acts like a real host, as follows:
To do...
Enter Ethernet
interface view
Enter interface
group view
1-11
Chapter 1 IGMP Snooping Configuration
Use the command...
system-view
interface interface-type
interface-number
port-group { manual
port-group-name |
aggregation agg-id }
igmp-snooping
static-group group-address
[ source-ip
source_address ] vlan
vlan-id
igmp-snooping
static-router-port vlan
vlan-id
Remarks
—
Required
Use either
command
Required
A port is not a
static member
port by default
Required
A port is not a
static router
port by default