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QinQ with plataform GEPON

Hi all.

 

I trying setting the environment with GEPON and CISCO C3750X, I have the follow topology.

 

 

The equipment GEPON have interfaces OLT(optical Line Terminator) with port fiber and port gigaethernet. This port is connnected port switch 3750x, port trunk. The output fiber  of GEPON, is connected equipement ONU(Optical Network Terminator) in custommer. At the ONU i own two ports(port 10/100/1000 and 10/100, besides port fiber) which connected in custommer, The port 10/100/100, is used for communication branch, and the port 10/100 for communication in internet through the switch 3750. The problems that equipement ONU is layer 2 and traffic STP for example my switch 3750 is being delivered in port 10/100/1000 and 10/100, do not want it. Then i configure QinQ in GEPON and 3750(double tagged), but when execute the command "switchport mode dot1q-tunnel" the interface vlan layer 3 being down state. I like the have QinQ with my vlan layer 3 in 3750 its possible?

 

Regards.

 

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