Network Working Group E. Chen Internet Draft Editor Expiration Date: June 2006 Cisco Systems Avoid EBGP Best Path Transitions - Implementation Report draft-chen-bgp-avoid-ebgp-transition-survey-00.txt Status of this Memo By submitting this Internet-Draft, each author represents that any applicable patent or other IPR claims of which he or she is aware have been or will be disclosed, and any of which he or she becomes aware will be disclosed, in accordance with Section 6 of 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. Abstract This document provides an implementation report for "Avoid BGP Best Path Transitions from One External to Another". Chen [Page 1] draft-chen-bgp-avoid-ebgp-transition-survey-00.txt Dec. 2005 1. Summary This document provides an implementation report for "Avoid BGP Best Path Transitions from One External to Another" [1]. Each response is listed. The editor makes no claim as to the accuracy of the information provided. The following organizations reported having implementations of the draft: Cisco Systems, and Redback Networks. 2. Implementation Forms 2.1. Cisco Systems Person filling out this form: Kawika Chetron (kawika@cisco.com) Implementation (Software Version): IOS-XR 3.3 Does the implementation include all parts of the specification? We implement the first and second paragraphs of section 3. We have support for parallel peering sessions between the same two peers, and as such, paragraph 3 is not applicable to our implementation. Are there parts of the specification that are unclear for implementation? No. List other implementations that have been tested for interoperability. Certainly, IOS-XR has been tested extensively with IOS. I do not know if this particular behavior has been covered in testing with any other OS. Chen [Page 2] draft-chen-bgp-avoid-ebgp-transition-survey-00.txt Dec. 2005 2.2. Redback Networks Person filling out this form: Albert Tian (tian@redback.com) Implementation (Software Version): SEOS 4.0.3 Does the implementation include all parts of the specification? Yes. Are there parts of the specification that are unclear for implementation? No. List other implementations that have been tested for interoperability. Cisco. 3. IANA Considerations This extension does not require any action by IANA. 4. Security Considerations This extension does not introduce any security issues. Chen [Page 3] draft-chen-bgp-avoid-ebgp-transition-survey-00.txt Dec. 2005 5. Acknowledgments The editor would like to thank Kawika Chetron and Albert Tian for submitting the implementation forms. 6. References [1] E. Chen, and S. Sangli, "Avoid BGP Best Path Transitions from One External to Another", draft-ietf-idr-avoid-transition-04.txt, December 2005. 7. Author Information Enke Chen Cisco Systems, Inc. 170 W. Tasman Dr. San Jose, CA 95134 Email: enkechen@cisco.com 8. Full Copyright Notice Copyright (C) The Internet Society (2005). This document is subject to the rights, licenses and restrictions contained in BCP 78, and except as set forth therein, the authors retain all their rights. This document and the information contained herein are provided on an "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY AND THE INTERNET ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Chen [Page 4]