MULTICAST with 6248 and WLC

[UP82]

Good morning,

i am facing problem with FluidMesh WLC and multicast connected to Alcatel switches.

SOURCE (vlan 9) ----> L3 switch (Alcatel 6850) ----> L2 switch (Alcatel 6248) -----> WLC Controller (fluidmesh) (vlan 20)
------> Access Point (fluidmesh) (RECEIVER) (vlan 13)

it's seems that WLC controller doesn't send IGMP JOIN message to the L2 switch and so the Multicast trattic doesn't flow from source to the AP .
If i attach a PC with multicast tool traffic generator to the L2 to the same vlan of the WLC it's works and multicast pass

An idea to overcome these issue is to enable uknown multicast flooding on L3 and L2 switch on the vlan 9, 20, 13.
Is it possible to enable it on 6248? i didn't find anything on the manual...

Any idea?
thanks a lot

UP

[UP82]

i resolved configuring a static map (output interface -> group address) on 6850

Paolo