To me it really sounds like what you are trying to achieve is Etherchannel over the provider's MPLS core.They are already running MPLS in their core so your solution will have to use an MPLS based VPN - say VLL or VPLS. In the cisco world, this is ca...
it really does depend! Normally, Layer2 services means you can run layer2 dataplane ...for etherchannel to work the way he wants, we are talking more like control plane, so the etherchannel can come up in the 1st place. Only then, we could talk about...
Just before I even look any further, i just thought i'd mention this: make sure you are not using the "log" keyword on your access-lists used for filtering NAT traffic - NAT doesn't like that and your ACLs won't work. Furthermore, check your ACL coun...