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Re: [spring] Spring SR question??

Ron Bonica <rbonica@juniper.net> Tue, 23 June 2020 19:51 UTC

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From: Ron Bonica <rbonica@juniper.net>
To: Gyan Mishra <hayabusagsm@gmail.com>, SPRING WG <spring@ietf.org>
Thread-Topic: [spring] Spring SR question??
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Date: Tue, 23 Jun 2020 19:50:58 +0000
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Subject: Re: [spring] Spring SR question??
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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

--

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Gyan Mishra

Network Solutions Architect

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