Re: L2 tunnelling techniques (was: Re: CCIE-SP)

Hi Dale,

Thanks for the reply.

My requirement is currently our enterprise has extended L2 over multiple
locations and it is provided through ATM. As we are phasing out ATM we
require a solution to replace this.

As I know there are MPLS based techniques like EoMPLS, VPLS etc, it requires
huge design considerations and lots of core change as we have to move from
IP forwarding to Lable forwarding and moreover this requires a high level
strategical decsion.

For us we require an interim solution. I have done some research and found
there are some IP based L2 extension techniques like EoMPLSoGRE and
VPLSoGRE..

Would like to have some working models or success stories from someone
here..

Thanks and Regards
Thameem

On Mon, Nov 23, 2009 at 11:20 AM, Dale Shaw <dale.shaw_at_gmail.com> wrote:

> Hi,
>
> On Mon, Nov 23, 2009 at 3:01 PM, Thameem Maranveetil Parambath
> <security.goodie_at_gmail.com> wrote:
> >
> > Do you know any L2 techniques for spanning L2 network across WAN through
> > existing IP L3 Core.
> >
> > I know the following are possible , but its not that scalable or require
> > much change in core.
> > 1. EoMPLS .. requires MPLS in core
> > 2. VPLS ... requires MPLS
> > 3. L2TP ... requires extra routers, ex: 2800 per site..
> >
> > Any other ways?
> >
> > Warm Regards,
> > Thameem
>
> Do you have a specific requirement or is this just 'research'? You say
> 'L2' but you seem to refer only to transporting Ethernet. It would
> help if you could provide more details about your scenario. L2TPv3
> doesn't necessarily require additional hardware, depending on your
> existing deployment.
>
> Anyway, with AToM, VPLS and L2TPv3, I think you have L2 transport
> covered. You could hack something together with bridging across a GRE
> tunnel too. Try it! It's not pretty.
>
> cheers,
> Dale

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Received on Mon Nov 23 2009 - 11:26:39 ART