Hi, Just to close this on the list as well -- Mrinmoy and I discussed this offline and the confusion with the BSID in the TLV and the BSID as part of the SR-ERO subobject is cleared! No further action is needed!
Thanks! Dhruv On Wed, May 17, 2023 at 1:02 PM Mrinmoy Das <mrinmoy.i...@gmail.com> wrote: > Hello Team, > > I was reading > https://datatracker.ietf.org/doc/draft-ietf-pce-binding-label-sid/16/ and > find below sections: > > 6. Binding SID in SR-ERO > > In PCEP messages, LSP route information is carried in the Explicit > Route Object (ERO), which consists of a sequence of subobjects. > [RFC8664] defines the "SR-ERO subobject" capable of carrying a SID as > well as the identity of the node/adjacency (NAI) represented by the > SID. The NAI Type (NT) field indicates the type and format of the > NAI contained in the SR-ERO. In case of binding SID, the NAI MUST > NOT be included and NT MUST be set to zero. [RFC8664] Section 5.2.1 > specifies bit settings and error handling in the case when NT=0. > > 7. Binding SID in SRv6-ERO > > [I-D.ietf-pce-segment-routing-ipv6] defines the "SRv6-ERO subobject" > for an SRv6 SID. Similarly to SR-ERO (Section 6), the NAI MUST NOT > be included and the NT MUST be set to zero. [RFC8664] Section 5.2.1 > specifies bit settings and error handling in the case when NT=0. > > > Suppose in a SR LSP, there is an ERO object with 3 ero-subobjects, having > MPLS labels 20, 50, 80. > Now, this LSP also has 3 binding TLV, having MPLS labels 10, 50, 75. > > Now, my questions are: > 1. Is the restriction mentioned in section 6 means only ERO sub-object > having MPLS label 50 will not have any NAI as the same label is present as > Binding value? Other ERO sub-objects having label 20 and 80 can have NAI as > there is no binding value same to it? > 2. How does the SID/Label stack look for this LSP in example? > > Thanks & Regards, > Mrinmoy > _______________________________________________ > Pce mailing list > Pce@ietf.org > https://www.ietf.org/mailman/listinfo/pce >
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