The multicast-group command creates a controllable multicast group.
The undo multicast-group command deletes a controllable multicast group.
By default, no multicast group is created.
multicast-group group-name { ip-address ipv4-group-address [ source ipv4-source-address ] | ipv6-address ipv6-group-address [ source ipv6-source-address ] }
undo multicast-group { all | group-name | index start-index to end-index }
Parameter |
Description |
Value |
---|---|---|
group-name |
Specifies the name of a multicast group. |
The value is a string of 1 to 31 case-insensitive characters without spaces. |
ip-address ipv4-group-address |
Specifies the address of a multicast group. |
The value ranges from 224.0.1.0 to 239.255.255.255 in dotted decimal notation. |
source ipv4-source-address |
Specifies an IPv4 source address. |
It is in dotted decimal notation. |
ipv6-address ipv6-group-address |
Specifies an IPv6 multicast group address. |
The address is a 32-digit hexadecimal number, in the format X:X:X:X:X:X:X:X. The value ranges from FF00:: to FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF, excluding the multicast addresses reserved for protocols. |
source ipv6-source-address |
Specifies an IPv6 source address. |
The address is a 32-digit hexadecimal number, in the format X:X:X:X:X:X:X:X. |
all |
Deletes all multicast groups. |
- |
index start-index to end-index |
Specifies the index of a multicast group. start-index specifies the start index of a multicast group, and end-index specifies the end index of a multicast group. |
The value is an integer that ranges from 1 to 1024. |
Usage Scenario
A multicast group is at the lowest level of the three-level control mechanism for controllable multicast. A multicast group corresponds to a multicast address such as 224.1.1.1. A multicast group can be regarded as a channel or program of IPTV.
Precautions
If two programs have the same multicast IP address but different source addresses, the two programs are considered different.
# Configure the IP address of a multicast group to 225.0.0.1 and name the multicast program tv-1.
<HUAWEI> system-view [HUAWEI] btv [HUAWEI-btv] multicast-group tv-1 ip-address 225.0.0.1
# Configure the IP address of a multicast group to ff1e::1234 and name the multicast program tv-2.
<HUAWEI> system-view [HUAWEI] btv [HUAWEI-btv] multicast-group tv-2 ipv6-address ff1e::1234
# Configure the IP address of a multicast group to 232.0.0.1, specify the source IP address to 192.168.1.1, and name the multicast program tv-3.
<HUAWEI> system-view [HUAWEI] btv [HUAWEI-btv] multicast-group tv-3 ip-address 232.0.0.1 source 192.168.1.1