F3726, F3211, F3174, R5135, R3816-HP Firewalls and UTM Devices Network Management Command Reference-6PW100

600
source-address: Specifies a multicast source by its IP address.
mask: Specifies the mask of the multicast group address or multicast source address, 255.255.255.255
by default.
mask-length: Specifies the mask length of the multicast group address or multicast source address. For a
multicast group address, this argument has an effective value range of 4 to 32. For a multicast source
address, this argument has an effective value range of 0 to 32. For both cases, the default value is 32.
Examples
# Clear all multicast group information created based on the configured IGMP SSM mappings on all
interfaces on the public network.
<Sysname> reset igmp ssm-mapping group all
Related commands
display igmp ssm-mapping group
robust-count (IGMP view)
Use robust-count to configure the IGMP querier's robustness variable globally.
Use undo robust-count to restore the default.
Syntax
robust-count robust-value
undo robust-count
Default
The IGMP querier's robustness variable is 2.
Views
Public network IGMP view
Default command level
2: System level
Parameters
robust-value: Specifies an IGMP querier's robustness variable, in the range of 2 to 5.
Usage guidelines
The IGMP querier's robustness variable defines the maximum number of attempts for transmitting IGMP
general queries, group-specific queries or group-and-source-specific queries in case of packet loss due to
network problems. A higher robustness variable makes the IGMP querier more robust, but results in
longer multicast group timeout time.
The IGMP querier's robustness variable determines the following values:
• The default number of general queries that the IGMPv1/v2/v3 querier sends on startup
• The number of IGMP group-specific queries that the IGMPv2 querier sends after receiving an IGMP
leave message
• The number of IGMP group-and-source-specific queries that the IGMPv3 querier sends after
receiving an IGMP report that indicates relation changes between IPv6 multicast groups and IPv6
multicast sources