5-5
# Enable the multicast source port suppression feature on Ethernet 1/0/1 through Ethernet 1/0/10 and
on Ethernet 1/0/12.
[Sysname] multicast-source-deny interface Ethernet 1/0/1 to Ethernet 1/0/10 Ethernet 1/0/12
# Enable the multicast source port suppression feature on Ethernet 1/0/13.
[Sysname] interface Ethernet 1/0/13
[Sysname-Ethernet1/0/13] multicast-source-deny
unknown-multicast drop enable
Syntax
unknown-multicast drop enable [ pon-ignore ]
undo unknown-multicast drop enable
View
System view
Parameters
pon-ignore: Disables the EPON ONU from dropping unknown multicast packets.
z The S3100-EI series Ethernet switches support the pon-ignore keyword.
z An S3100-C-EPON-EI series Ethernet switch with an ONU sub-card can operate as an EPON
ONU. To disable an EPON ONU from dropping unknown unicast packets, use the
unknown-multicast drop enable [ pon-ignore ] command.
Description
z On an Ethernet switch not operating as an EPON ONU:
Use the unknown-multicast drop enable command to enable the switch to drop unknown multicast
packets.
Use the unknown-multicast drop enable [ pon-ignore ] or undo unknown-multicast drop enable
command to disable the switch from dropping unknown multicast packets.
By default, a common Ethernet switch does not drop unknown multicast packets.
z On an Ethernet switch operating as an EPON ONU:
Use the unknown-multicast drop enable command to enable the EPON ONU to drop unknown
multicast packets.
Use the unknown-multicast drop enable [ pon-ignore ] command to disable the EPON ONU from
dropping unknown multicast packets.
Use the undo unknown-multicast drop enable command to restore the default.
By default, an EPON ONU drops unknown multicast packets.
Examples
# Enable unknown multicast packets dropping.
<Sysname> system-view
System view: return to user view with Ctrl+Z.
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