Network Working Group W. Cheng Internet Draft China Mobile Intended status: Standards Track C. Lin Expires: August 30, 2026 New H3C Technologies S. Yue China Mobile February 28, 2026 Signaling SAVNET Capability Using IGP draft-cheng-lsr-adv-savnet-capbility-03 Abstract Existing intra-domain SAV solutions (e.g., BCP38 [RFC2827] and BCP84 [RFC3704]) have problems of high operational overhead or inaccurate validation (see [I-D.ietf-savnet-intra-domain-problem-statement]). To address these problems and guide the design of new intra-domain SAV solutions,[I-D.ietf-savnet-intra-domain-architecture] proposes the architecture of intra-domain SAVNET and introduces the use of SAV-specific information in intra-domain networks. This document defines a mechanism to signal the SAVNET capablity and the source prefix using IGP and BGP-LS. Status of this Memo This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet- Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." The list of current Internet-Drafts can be accessed at http://www.ietf.org/ietf/1id-abstracts.txt The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html Cheng, et al. Expire August 30, 2026 [Page 1] Internet-Draft Signaling SAVNET Capability Using IGP February 2026 This Internet-Draft will expire on August 30, 2026. Copyright Notice Copyright (c) 2026 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (https://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Revised BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Revised BSD License. Table of Contents 1. Introduction...................................................2 1.1. Requirements Language.....................................3 2. Signaling SAVNET Capability Using IS-IS........................3 2.1. SAVNET Capabilities Sub-TLV...............................3 2.2. Source Prefix Flag........................................4 3. Signaling SAVNET Capability Using OSPF.........................5 3.1. SAVNET Capabilities Sub-TLV...............................5 3.2. Source Prefix Flag........................................6 4. Signaling SAVNET Capability Using OSPFv3.......................6 4.1. SAVNET Capabilities Sub-TLV...............................6 4.2. Source Prefix Flag........................................8 5. Signaling SAVNET Capability in BGP-LS..........................8 6. Security Considerations........................................8 7. IANA Considerations............................................8 8. References...................................