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This command is prioritized over the settings for the system-wide processing method for unknown multicast frames.
[Example]
This discards the multicast frames received by VLAN #1 that are not registered in the MAC address table.
SWP2(config)#interface vlan1
SWP2(config-if)#l2-unknown-mcast discard
8.1.3 Forwarding setting for link local multicast frames
[Syntax]
l2-unknown-mcast forward link-local
no l2-unknown-mcast forward link-local
[Initial value]
None
[Input mode]
global configuration mode
[Description]
When l2-unknown-mcast discard is set, the frame for the link local multicast address is forwarded without being discarded.
If this command is executed with the "no" syntax, the specified setting is deleted.
[Note]
The link local multicast address for this command falls within the ranges shown below.
IPv4: 224.0.0.0/24
IPv6: ff02::/112
The format for specifying the IPv4 multicast address has been discontinued. When you load a config that includes this format,
the config is automatically replaced with the l2-mcast flood command.
[Example]
This forwards frames for the link local multicast address as unknown multicasts without discarding them.
SWP2(config)#l2-unknown-mcast discard
SWP2(config)#l2-unknown-mcast forward link-local
8.1.4 Forwarding setting for multicast frames
[Syntax]
l2-mcast flood ipv4_addr
no l2-mcast flood ipv4_addr
[Parameter]
ipv4_addr : A.B.C.D
IPv4 multicast address
[Initial value]
None
[Input mode]
interface mode
[Description]
Floods the frames with the IPv4 multicast address specified by the destination in multicast traffic received by the VLAN
interface.
Up to 100 instances of this command can be set system-wide.
If this command is executed with the "no" syntax, the specified IPv4 multicast address settings are deleted.
If no IPv4 multicast address is specified, all settings are deleted.
[Note]
This command can be specified only for VLAN interfaces.
Command Reference | IP multicast control
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