H3C S7500E Series Command Reference

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uni multicast-group-number
Syntax
uni uni-number multicast-group-number number
undo uni uni-number multicast-group-number
View
ONU port view
Default Level
2: System level
Parameters
uni-number: UNI number, in the range 1 to the number of UNI ports of the current ONU. The number of
UNIs can be up to 80.
number: Number of multicast channels, in the range 0 to 255.
Description
Use the uni multicast-group-number command to configure the number of multicast channels that
can be accessed at the same time by the users connected to the specified UNI of the ONU.
Use the undo uni multicast-group-number command to restore the default value.
By default, the users connected to a UNI can access up to 64 multicast channels at the same time.
This command takes effect only when the ONU works in the IGMP snooping mode.
Related commands: multicast-mode.
The maximum number of multicast channels supported by the UNI ports of an H3C ONU varies with
ONU type, as shown in the following table.
Table 3-7 Maximum number of multicast channels supported by H3C ONUs
H3C ONU type Maximum number of multicast channels supported by UNI ports
S3100-SI series 256
S3100-EI series 512
ET704 series 64
ET254-L Multicast not supported
Assume the maximum number of multicast channels supported by the UNI ports of an ONU is less
than the maximum number of channels configured remotely through OLT:
 When the ONU is online, if you configure the maximum number of multicast channels on UNI ports
to be greater than that supported by the UNI ports, the configuration will fail. For example, the UNI
ports of an ET704 series ONU support up to 64 multicast channels. If you use the uni
multicast-group-number command by specifying a value greater than 64 for the number
argument through the OLT, a message prompt will be displayed indicating the configuration fails.
 When the ONU is not online, if you configure the maximum number of multicast channels on UNI
ports through the OLT to be greater than that supported by the UNI ports, after the ONU goes
online, the ONU will use the maximum number supported. For example, if you configure the
maximum number of multicast channels on the UNI ports as 255 through the OLT while the

H3C S7500E Series Specifications

General

Brand	H3C
Model	S7500E Series
Category	Switch
Language	English