Hi Stewart, > Yes, but those are required anyway to support SRv6
That is incorrect. Please watch Les's presentation during last IETF where he clearly and correctly stated that IGP extensions for SRv6 are optional and not required (unlike in the case of SR-MPLS where such signalling of global labels is indeed necessary to build "global labels" based forwarding). As a matter of fact I knew this will generate confusion in IETF and recommended to make it very clear in the drafts. Distribution of SID functions does not need to be carried in routing protocols. And SRv6 SID locator function is native to IPv6 routing hence no extensions needed. Sure they can be carried in IGPs or BGP but this is just an option not necessity. Best, Robert. On Mon, May 8, 2017 at 12:15 PM, Stewart Bryant <[email protected]> wrote: > > > On 05/05/2017 11:17, Robert Raszuk wrote: > >> And to add one observation .. >> >> Stewart makes a point that SR-MPLS can be deployed without mpls control >> plane. >> >> Well it sure does not require LDP however IGP or BGP extensions for >> SR-MPLS signalling is also an example of mpls control plane ... even if >> much simpler than traditional cases it is still required. >> > > > Yes, but those are required anyway to support SRv6. You always have to > provide the mapping between the function, the function identifier and the > function location. > > - Stewart > >
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