N-Tron 7014FX2, 7014TX, 7014FXE2 user manual Display Static Multicast Group Addresses

Example 6 – Basic understanding of VLANs with Multicast Filt ering

VLAN Configuration View

VLAN Status : Enable

VLAN ID VLAN Name Untagged Port(s) Tagged Port(s) Mgmt Port Admit Mirror Port

1	Default VLAN	--	--	YES	All	0
2	VLAN -2	P1-P12	--	YES	All	0

3	VLAN -3	P2-P12	--	YES	All	0
4	VLAN -4	P1-P2	--	YES	All	0

Display Static Multicast Group Address(es)

Multicast Address Port List

01:00:00:00:00:01 P1-P12

01:00:00:00:00:02 P1,P6,P8

Ports Configuration View

Port Port PVID

No Name

1 P1 4

2 P2 2

3 P3 3

... … …

11 P11 3

12 P12 3

Receiving	Tagged VID	Destination	Transmitting	Notes
Port #	in packet	Address	Port #s
Port P1	Untagged	01:00:00:00:00:01	Port P2	Goes to Ports P1-P12, but port P1 can only
				send to Port P2 (VLAN 4)
Port P3	Untagged	01:00:00:00:00:02	Port P7	Packet Discarded
Port P2	Untagged	01:00:00:00:00:01	Port P1,P3-P12	Goes to Ports P1-P12, but won’t go back out
				the port it came in on
Port P2	Untagged	01:00:00:00:00:02	Port P1,P6,P8	Goes to ports P1,P6,P8
Port P3	Untagged	01:00:00:00:00:01	Port P2	Goes to Port P3.
Port P6	Untagged	01:00:00:00:00:02	Port P8	Goes to Port P6.
Port P3	Untagged	01:00:00:00:00:02	Port P9	Packet Discarded

Note: If there are multiple ports on different VLANs, the 7014 will apply the static multicast address to the lowest VLAN-ID that is associated with one of the ports assigned to the static multicast address. If the lowest VLAN-ID contains all the ports assigned to the static multicast address (an umbrella VLAN), it will function for all those ports with no problems. This can be achieved with overlapping VLANs.

For further information and examples on overlapping vlans, see:

http://www.n-tron.com/pdf/OverlappingPortVLAN.pdf

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