Re: PPP over MPEG-TS over Satellite

[Gorry Fairhurst <gorry@erg.abdn.ac.uk>]

The ULE framing is generic, and you could use it to support a PPP frame.

The following ULE link addressing schemes are allowed:

(i) 	No MAC/Link address
(ii) 	MAC/Link dst address only.
(iii) 	MAC src and dst addresses
(iv) 	Link address + MAC src and dst addresses
Which would be most appropriate?

The EtherType for PPPoE (0x880B) is certainly supported by ULE, since it falls 
in the range of IANA-assigned EtherTypes.

I'm not yet aware of anyone who has used ULE in this way. If there are 
additional issues or some experience, perhaps someone on the list could add a 
reply to this?

Best wishes,
Gorry

James Courtier-Dutton wrote:

> On Fri, 26 Nov 2004 10:38:52 +0000, Gorry Fairhurst
> <gorry@erg.abdn.ac.uk> wrote:
>
> > Can you please say a little more about your intended scenario, and how you
> > were envisaging using PPP?
> >
> > Gorry
> >
> >
> >
> > James Courtier-Dutton wrote:
> >
> >
> > > Has there been any discussions on the use of PPP over Satellite?
> > >
> > > E.g. a PPP SNDU
> > >
> > > Or would the preferred method be PPP over Ethernet over Satellite?
> > >
> > > This would allow for the Satellite provider to wholesale Satellite
> > > users to ISPs. The ISPs could then use PPP to control access, in much
> > > the same way as used on ADSL today.
> > >
> > > James
>
>
> User's Host PC -> Ethernet -> Satellite access terminal or mobile
> terminal -> Satellite hub -> L2TP link to ISP.
>
> The Mobile terminal would somehow be assigned a multiplex ID unique to
> this Mobile terminal.
> The Mobile terminal would then add the multiplex ID to the beginning
> of the PPP frame and send it over the satellite. The Satellite hub
> would then re-multiplex the PPP from the satellite into L2TP sessions
> and forward the PPP to the ISP.
> The ISP would then use PPP to assign IP addresses to PPP clients using
> standard PPP negotiation.
> The advantage of this would be that the IP addresses assigned would
> then be in the ISP domain, and the ISP could treat the MT in exactly
> the same way it treats dialup modem or ADSL users, by assigning them
> IP addresses using PPP.
> A similar comparison would be using PPPoE on cable TV networks.
>
> James