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 -- <http://www.verizon.com/> *Gyan Mishra* *Network Solutions A**rchitect * *M 301 502-134713101 Columbia Pike *Silver Spring, MD
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