Re: [spring] Spring SR question??

Gyan,

In SR-MPLS, either over IPv4 or IPv6 the data-plane is MPLS (rfc8660)
If MPLS is tunneled over IP, e.g MPLS over GRE, MPLS over UDP, etc, then data-plane is that of outer encapsulation - rfc8663 as the best example, e.g outer header would be IPv4/IPv6+UDP
Since bindings (SIDs) need to be distributed, you’d need a label distribution protocol, with IPv6 that would be IS-IS, OSPFv3 or BGP (or  controller based).
Vendor support for that is rather limited, I don’t recall any.
Other option to distribute label bindings over IPv6 would be LDPv6 + v6 IGP, I recall Junos implementation, there could be more.
There’s quite interesting discussion on NANOG - https://mailman.nanog.org/pipermail/nanog/2020-June/208111.html

Hope this helps

Cheers,
Jeff
On Jun 23, 2020, 1:52 PM -0700, Gyan Mishra <hayabusagsm@gmail.com>, wrote:
>
>
> Thanks Ron!
>
> Gyan
>
> > On Tue, Jun 23, 2020 at 3:51 PM Ron Bonica <rbonica@juniper.net> wrote:
> > > Gyan,
> > >
> > > You can signal SR-MPLS over a network that has IPv6 enabled, but does not have IPv4 enabled.
> > >
> > >                                                    Ron
> > >
> > >
> > >
> > > Juniper Business Use Only
> > > From: spring <spring-bounces@ietf.org> On Behalf Of Gyan Mishra
> > > Sent: Tuesday, June 23, 2020 1:20 PM
> > > To: SPRING WG <spring@ietf.org>
> > > Subject: [spring] Spring SR question??
> > >
> > > [External Email. Be cautious of content]
> > >
> > >
> > > All
> > >
> > > SR-MPLS utilizes IPv4 data plane and and can service v4 v6 edges  6to4 softwire mesh framework from the VPN overlay aspect..
> > >
> > > Can SR-MPLS use IPV6 data plane?
> > >
> > > Reason why I am asking is that it is very simple to get from LDPv4 core to SR-MPLS core.
> > >
> > > However if you have an existing brown field SP core and your end goal is to get to SRv6 - how can you easily get there.
> > >
> > > So my thoughts are you can use SR-MPLS as a stepping stone so to speak to get to SRv6.
> > >
> > > To that end you could use Greg Mirsky draft of tunneling SR-MPLS in SRV6 interoperability and use other inter operability drafts.
> > >
> > > But let’s say you prefer to get from point A go point B seamlessly and native naturally without any translation.
> > >
> > > An analogy would be migratory to IPV6 instead of using translation technology tunnels you dual stand the entire network and use ds-lite or LSN or 6RD to close the gap.
> > >
> > > So my thoughts on getting to the “end state” SRv6 are we follows:
> > >
> > > MPLS LDPv4
> > >
> > > MPLS LDPv6
> > >
> > > SR-MPLS v6
> > >
> > > Once you have a v6 core and you have decommissioned LDPv6 you now have the v6 data plan ready to go to get to SRv6
> > >
> > > SRv6
> > >
> > > Only caveat with this idea is I am not sure if SR-MPLS supports IPv6 data plane v6 label binding.
> > >
> > >
> > > Kind Regards
> > >
> > > Gyan
> > >
> > > --
> > > Gyan Mishra
> > > Network Solutions Architect
> > > M 301 502-1347
> > > 13101 Columbia Pike
> > > Silver Spring, MD
> > >
> --
>
> Gyan Mishra
> Network Solutions Architect
> M 301 502-1347
> 13101 Columbia Pike
> Silver Spring, MD
>
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