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RTG-DIR Issue 11: Section 2.3 - Clarity of usage of TLVs defined in RFC9012 #13

Closed suehares closed 3 months ago

suehares commented 4 months ago

RTG-DIR Issue 11: Section 2.3 - Clarity of usage of TLVs defined in RFC9012

Section: 2.3. Applicability of Tunnel Encapsulation Attribute Sub-TLVs Text:/ The Tunnel Egress Endpoint and Color sub-TLVs, as defined in [RFC9012], may also be present in the SR Policy encodings./

Jeffrey: Why do we say the above given the following paragraph? They seem to be contractive.

Text:/ The Tunnel Egress Endpoint and Color Sub-TLVs of the Tunnel Encapsulation Attribute are not used for SR Policy encodings and therefore their value is irrelevant in the context of the SR Policy SAFI NLRI. If present, the Tunnel Egress Endpoint sub-TLV and the Color sub-TLV MUST be ignored by the BGP speaker and MAY be removed from the Tunnel Encapsulation Attribute during propagation.

Similarly, any other sub-TLVs (including those defined in [RFC9012]) whose applicability is not specifically defined for the SR Policy SAFI MUST be ignored by the BGP speaker and MAY be removed from the Tunnel Encapsulation Attribute during propagation./

Jeffrey: Why don't we say any those sub-TLVs not defined in this document must not be present and must be ignored?

suehares commented 3 months ago

Change in text -04.txt for Section 3

Status: closed, resolved by change in text.

Current text: / The Tunnel Egress Endpoint and Color Sub-TLVs of the Tunnel Encapsulation Attribute [RFC9012] are not used for SR Policy encodings and therefore their value is irrelevant in the context of the SR Policy SAFI NLRI. If present, the Tunnel Egress Endpoint sub- TLV and the Color sub-TLV MUST be ignored by the BGP speaker and MAY be removed from the Tunnel Encapsulation Attribute during propagation.

Similarly, any other sub-TLVs (including those defined in [RFC9012]) whose applicability is not specifically defined for the SR Policy SAFI MUST be ignored by the BGP speaker and MAY be removed from the Tunnel Encapsulation Attribute during propagation./