Re: MPLS over GRE

Hi Brian

Why OTV has this in built MPLS over GRE logic.
With L2 , u cant do multipath and also u cant move ur virtual machines
seamlessly
Can u give me some more examples for this Seamless Mobility with the same
MAC Address.

With normal L2, u cant do multipathing, u encapsulate L2 with L3 and do all
sorts of magic what L3 gives u .
but TRILL is also same as MPLS label switching or like OTV. Is there any
logic behind this MPLS over GRE ?

I dont see any logic for this ?

On Fri, Aug 24, 2012 at 3:41 AM, Bob Sinclair <bob_at_bobsinclair.net> wrote:

> Hi Brian,
>
> Just read your Blog post on this.
> (http://blog.ine.com/2012/08/17/otv-decoded-a-fancy-gre-tunnel/)
> Great Work! Thanks for sharing the captures.
>
> -Bob
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> Brian McGahan
> Sent: Thursday, August 23, 2012 2:21 PM
> To: Craig Miller; Cisco certification; CCIE KID
> Subject: RE: MPLS over GRE
>
> Overlay Transport Virtualization (OTV) also uses MPLS over GRE:
> http://ine.co/otv
>
>
>
> Brian McGahan, CCIE #8593 (R&S/SP/Security) bmcgahan_at_INE.com
>
> Internetwork Expert, Inc.
> http://www.INE.com
>
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> Craig Miller
> Sent: Thursday, August 23, 2012 11:17 AM
> To: Cisco certification; CCIE KID
> Subject: Re: MPLS over GRE
>
> I've never had to use it before, but I've considered it for some instances,
> and ended up going with other solutions. Where it would be useful, is
> connecting your MPLS network, across a non-MPLS network, or someone elses
> MPLS network.
>
> Bridging two PE routers, a P to PE router, two P routers. From a
> non-service
> provider perspective, if you have a need to run your own Enterprise MPLS
> network internally, you might have several remote sites that are connected
> to your network via a carrier MPLS, or maybe the remote site has just a
> normal internet pop. In both of those situations, probably more obvious to
> the remote site that has a normal internet pop, you can use a GRE solution,
> DMVPN etc, to establish a peer to peer session with your own
> infrastructure,
> from there, you can bridge your MPLS network over your carriers network, no
> matter what their infrastructure consist of.
>
> This could also be used in situations such as company mergers and such to
> maintain continuity while doing the migration.
>
> Hope that helps,
> Craig
>
> --- On Thu, 8/23/12, CCIE KID <eliteccie_at_gmail.com> wrote:
>
> > From: CCIE KID <eliteccie_at_gmail.com>
> > Subject: MPLS over GRE
> > To: "Cisco certification" <ccielab_at_groupstudy.com>
> > Date: Thursday, August 23, 2012, 9:28 AM Hi all
> >
> > I was going through some GRE use cases and i found that MPLS runs over
> > GRE.
> > I cant visualize any proper use case logic for this MPLS over GRE. And
> > that GRE is termed as soft GRE. Is there anyone who worked on MPLS
> > over GRE implementation. Where it is used extensively and how it is
> > been designed
> >
> > I can see that when SP is not offering MPLS services , then we can
> > tunnel over MPLs switched packets from ISP to other ISP over GRE where
> > the latter ISP support only IP and not MPLS . Is there any other
> > scenario or else any special use case for MPLS over GRE.
> >
> > Thanks in advance,
> >
> > --
> > With Warmest Regards,
> >
> > CCIE KID
> > CCIE#29992 (Security)
> >
> >
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Received on Wed Aug 29 2012 - 08:58:14 ART