--- 1/draft-ietf-lsr-isis-extended-hierarchy-04.txt 2021-12-26 08:13:17.648373684 -0800 +++ 2/draft-ietf-lsr-isis-extended-hierarchy-05.txt 2021-12-26 08:13:17.684374590 -0800 @@ -1,20 +1,20 @@ Internet Engineering Task Force T. Li Internet-Draft Arista Networks Intended status: Standards Track L. Ginsberg -Expires: January 1, 2022 P. Wells +Expires: June 29, 2022 P. Wells Cisco Systems - June 30, 2021 + December 26, 2021 IS-IS Extended Hierarchy - draft-ietf-lsr-isis-extended-hierarchy-04 + draft-ietf-lsr-isis-extended-hierarchy-05 Abstract The IS-IS routing protocol was originally defined with a two level hierarchical structure. This was adequate for the networks at the time. As we continue to expand the scale of our networks, it is apparent that additional hierarchy would be a welcome degree of flexibility in network design. This document defines IS-IS Levels 3 through 8. @@ -27,21 +27,21 @@ Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet- Drafts is at https://datatracker.ietf.org/drafts/current/. 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." - This Internet-Draft will expire on January 1, 2022. + This Internet-Draft will expire on June 29, 2022. Copyright Notice Copyright (c) 2021 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 @@ -632,21 +632,21 @@ themselves. This document proposes no changes to those security architectures. 13. Normative References [ISO10589] International Organization for Standardization, "Intermediate System to Intermediate System Intra-Domain Routing Exchange Protocol for use in Conjunction with the Protocol for Providing the Connectionless-mode Network - Service (ISO 8473)", ISO/IEC 10589:2002, Nov. 2002. + Service (ISO 8473)", ISO/IEC 10589:2002, November 2002. [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, March 1997, . [RFC5309] Shen, N., Ed. and A. Zinin, Ed., "Point-to-Point Operation over LAN in Link State Routing Protocols", RFC 5309, DOI 10.17487/RFC5309, October 2008, .