D-Link DXS-3600 Series Cli Reference Manual page 824

DXS-3600 Series Layer 3 Managed 10Gigabit Ethernet Switch CLI Reference Guide
forward-unmatched
ignore-vlan
Default
Forward-unmatched: Disabled.
Ignore VLAN: Disabled.
Command Mode
Global Configuration Mode.
Command Default Level
Level: 12.
Usage Guideline
If the untagged IGMP/MLD report/leave/done packets are received by the receiver port, the packets will
be matched against the group profile defined for the multicast VLANs that the receiver port belongs to
and classified to the matched multicast VLAN. If the packet is matched, then the port will be taken into
subsequent group learning process with the matched multicast VLAN.
If there is no match against all multicast VLANs and if the VLAN associated with the packet happens to
be a multicast VLAN, the IGMP/MLD packet can be either dropped or flooded to VLAN member ports
depending on the setting of this command. If forward-unmatched is disabled, then the packet is dropped.
If forward-unmatched is enabled, then the packet is flooded.
If there are no matches against all multicast VLANs and the packet's VLAN is not configured as the
multicast VLAN, then the IGMP/MLD packet will not be handled by multicast VLAN.
If the IGMP/MLD report/leave/done packet received by the receiver port is tagged, then the handling is
different based on setting of the ignore-vlan parameters.
If packet VLAN is a multicast VLAN and the packet matches the group profile of the VLAN, then the
packet will be taken into the subsequent group learning process. If there is no match, then the packet will
be handled based on forward-unmatched setting. If packet VLAN is not a multicast VLAN, then the
packet will not be handled by the multicast VLAN.
If the packet's VLAN is IGMP/MLD snooping enabled, the packet will be processed by IGMP/MLD
snooping, or else the packet's VLAN is ignored and taken to match the group profile of multicast VLANs
associated with the receive port. If there is a match, then the packet will be taken into the subsequent
group learning process with the matched multicast VLAN. If there is no match but the packet's VLAN is a
multicast VLAN, then the packet will be handled based on the forward-unmatched setting. If the packet
VLAN is not a multicast VLAN, then the packet will not be handled by multicast VLAN.
Example
This example shows how to enable the forward unmatched and ignore VLAN setting.
Switch# configure terminal
Switch(config)# mvlan forward-unmatched
Switch(config)# mvlan ignore-vlan
Switch(config)#
Specifies that if the received IGMP or MLD control packet is untagged,
does not match any profile, and the associated default VLAN is a
multicast VLAN, or is tagged with a multicast VLAN, but does not
match the associated profile, then the packet will be forwarded or
dropped based on this setting. By default, the packet will be dropped.
Specifies the setting for tagged IGMP or MLD control packets. If
enabled, then the packet's VLAN is ignored and taken to match the
profile to find its multicast VLAN. When this option is enabled, the
switch will ignore the VLAN of the receiving IGMP or MLD control
packet and try to find a match profile.
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