In answer to both the question about PPP and MPLS.The intenetion is to support Internet (IP) protocols over this media, including the various tunnel, and other protocol components. the ULE Encapsulation supports all IANA EtherTypes:
http://www.iana.org/assignments/ethernet-numbers This includes code-points for MPLS and PPP.However, there has been no specific discussions on either of these topics on this list. If there is a need to specify the precise mapping, or to provide recommendations on addressing and/or usage, then this WG list is a good place to start this discussion. Please do send comments and/or Internet Drafts on these topics for the group to consider.
Gorry Fairhurst (ipdvb WG Chair) James Courtier-Dutton wrote:
The use of MPLS to the CPE device on Cable Internet networks seems to be getting popular now. Are there any special considerations one should take into account, if one wished to use MPLS over Satellite networks. Maybe some bytes could be saved if one included a consideration for MPLS in the draft-ietf-ipdvb-ule-03.txt document. Kind Regards James