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Fast Ethernet WAN Trunking

Last Modified: 2012-08-13
  We have a 100 mbs fast ethernet wan line over our service provider connected to  layer 3 router on both sides. For a design I want to connect this line to a layer 2 switch at both ends and do vlan trunking across it (for a vmware stretch vlan). As it is a ethernet layer 2 line is a matter just plugging in  each side and creating a trunk. I contacted my service provider the initial response they have said it is ?? But i want a second opionion as i was under the impression to do this we would have to have a line that supports qinq to go over the sp overlay network. They do have another specfic qinq product on there website i am just questionating   whether the information given to me by their repersentive is correct and his not mistaken
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