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By default, an IGMP message carries the Router-Alert option.
Related commands:
igmp send-router-alert
and
require-router-alert
.
Examples
# Globally disable the insertion of the Router-Alert option in IGMP messages to be sent.
<Sysname> system-view
[Sysname] igmp
[Sysname-igmp] undo send-router-alert
ssm-mapping (IGMP view)
Syntax
ssm-mapping
group-address
{
mask
|
mask-length
}
source-address
undo ssm-mapping
{
group-address
{
mask
|
mask-length
}
source-address
|
all
}
View
IGMP view
Default level
2: System level
Parameters
group-address
: Specifies a multicast group by its IP address, in the range of 224.0.0.0 to
239.255.255.255.
mask
: Subnet mask of the multicast group address.
mask-length
: Subnet mask length of the multicast group address, in the range of 4 to 32.
source-address
: Specifies a multicast source by its IP address.
all
: Removes all IGMP SSM mappings.
Description
Use
ssm-mapping
to configure an IGMP SSM mapping.
Use
undo ssm-mapping
to remove IGMP SSM mappings.
By default, no IGMP SSM mappings are configured.
Related commands:
display igmp ssm-mapping
and
igmp ssm-mapping enable
.
Examples
# Configure an IGMP SSM mapping for multicast groups in the range of 225.1.1.0/24 and multicast
source 125.1.1.1.
<Sysname> system-view
[Sysname] igmp
[Sysname-igmp] ssm-mapping 225.1.1.0 24 125.1.1.1
startup-query-count (IGMP view)
Syntax
startup-query-count
value