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require-router-alert (IGMP view)
Syntax
require-router-alert
undo require-router-alert
View
IGMP view
Default level
2: System level
Parameters
None
Description
Use
require-router-alert
to configure the router globally to discard IGMP messages that do not carry the
Router-Alert option.
Use
undo require-router-alert
to restore the default.
By default, the switch does not check the Router-Alert option but passes all the IGMP messages that it
received to the upper layer protocol for processing.
Related commands:
igmp require-router-alert
and
send-router-alert
.
Examples
# Configure the router to discard IGMP messages that do not carry the Router-Alert option globally.
<Sysname> system-view
[Sysname] igmp
[Sysname-igmp] require-router-alert
reset igmp group
Syntax
reset igmp group
{
all
|
interface
interface-type interface-number
{
all
|
group-address
[
mask
{
mask
|
mask-length
} ] [
source-address
[
mask
{
mask
|
mask-length
} ] ] } }
View
User view
Default level
2: System level
Parameters
all
: Specifies all interfaces (the first
all
) or all IGMP groups (the second
all
).
interface
interface-type interface-number
: Specifies an interface by its type and number.
group-address
: Multicast group address, in the range of 224.0.0.0 to 239.255.255.255.
source-address
: Multicast source address.
mask
: Subnet mask of the multicast group address or multicast source address, 255.255.255.255 by
default.
