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OSPF Topology-Transparent Zone (RFC8099) Disclosure Number: IPCOM000249491D
Original Publication Date: 2017-Feb-01
Included in the Prior Art Database: 2017-Mar-01
Document File: 54 page(s) / 60K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

H. Chen: AUTHOR [+5]


Networks expand as business grows and traffic increases. For scalability and manageability, a hierarchical network architecture is usually deployed in OSPF networks by regrouping routers into areas, which is often challenging and causes service interruptions.

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Internet Engineering Task Force (IETF)                           H. Chen Request for Comments: 8099                                         R. Li Category: Experimental                               Huawei Technologies ISSN: 2070-1721                                                A. Retana                                                      Cisco Systems, Inc.                                                                  Y. Yang                                                                 Sockrate                                                                   Z. Liu                                                             China Mobile                                                            February 2017

                      OSPF Topology-Transparent Zone


   This document presents a Topology-Transparent Zone (TTZ) in an OSPF    area.  A TTZ comprises a group of routers and a number of links    connecting these routers.  Any router outside of the zone is not    aware of the zone.  A TTZ hides the internal topology of the TTZ from    the outside.  It does not directly advertise any internal information    about the TTZ to a router outside of the TTZ.  The information about    the links and routers such as a link down inside the TTZ is not    advertised to any router outside of the TTZ.

Status of This Memo

   This document is not an Internet Standards Track specification; it is    published for examination, experimental implementation, and    evaluation.

   This document defines an Experimental Protocol for the Internet    community.  This document is a product of the Internet Engineering    Task Force (IETF).  It represents the consensus of the IETF    community.  It has received public review and has been approved for    publication by the Internet Engineering Steering Group (IESG).  Not    all documents approved by the IESG are a candidate for any level of    Internet Standard; see Section 2 of RFC 7841.

   Information about the current status of this document, any errata,    and how to provide feedback on it may be obtained at

Chen, et al.                  Experimental                      [Page 1]
 RFC 8099                Topology-Transparent Zone          February 2017

 Copyright Notice

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