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BGP4/IDRP for IP---OSPF Interaction (RFC1745)

IP.com Disclosure Number: IPCOM000003995D
Original Publication Date: 1994-Dec-01
Included in the Prior Art Database: 2019-Feb-12
Document File: 19 page(s) / 25K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

K. Varadhan: AUTHOR [+2]

Related Documents

10.17487/RFC1745: DOI

Abstract

This memo defines the various criteria to be used when designing an Autonomous System Border Router (ASBR) that will run either BGP4 or IDRP for IP with other ASBRs external to the AS and OSPF as its IGP. [STANDARDS-TRACK]

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 8% of the total text.

Network Working Group K. Varadhan Request for Comments: 1745 OARnet & ISI Category: Standards Track S. Hares NSFnet/Merit Y. Rekhter T.J. Watson Research Center, IBM Corp. December 1994

BGP4/IDRP for IP---OSPF Interaction

Status of this Memo

This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited.

Abstract

This memo defines the various criteria to be used when designing an Autonomous System Border Router (ASBR) that will run either BGP4 or IDRP for IP with other ASBRs external to the AS and OSPF as its IGP.

Table of Contents

1. Introduction ................................................. 2 2. Reachability Information Exchange ............................ 4 2.1. Exporting OSPF information into BGP/IDRP .................. 4 2.2. Importing BGP/IDRP information into OSPF ................... 6 3. BGP/IDRP Identifier and OSPF router ID ....................... 7 4. Setting OSPF tags, ORIGIN and PATH attributes ................ 8 4.1. Configuration parameters for setting the OSPF tag .......... 10 4.2. Manually configured tags ................................... 10 4.3. Automatically generated tags ............................... 11 4.3.1. Tag = <Automatic = 1, Complete = 0, PathLength = 00> ...... 11 4.3.2. Tag = <Automatic = 1, Complete = 0, PathLength = 01> ...... 11 4.3.3. Tag = <Automatic = 1, Complete = 0, PathLength = 10> ...... 12 4.3.4. Tag = <Automatic = 1, Complete = 1, PathLength = 00> ...... 12 4.3.5. Tag = <Automatic = 1, Complete = 1, PathLength = 01> ...... 12 4.3.6. Tag = <Automatic = 1, Complete = 1, PathLength = 10> ...... 13 4.4. Miscellaneous tag settings ................................. 14 5. Setting OSPF Forwarding Address and BGP NEXT_HOP attribute ... 14 6. Changes from the BGP 3 - OSPF interactions document .......... 15 7. Security Considerations ...................................... 16 8. Acknowledgements ............................................. 16 9. Bibliography ................................................. 16

Varadhan, Hares & Rekhter [Page 1]

RFC 1745 BGP4/IDRP for IP - OSPF Interaction December 1994

10. Appendix .................................................... 18 11. Authors’ Present Addresses .................................. 19

1. Introduction

This document defines the various criteria to be used when designing an Autonomous System Border Router (ASBR) that will run BGP4 [RFC1654] or IDRP for IP [IDRP] with other ASBRs external to the AS, and OSPF [RFC1583] as its IGP.

All future references of BGP in this document will refer to BGP version 4, as defined in [RFC1654]. All reference to IDRP are references to the Inter-Domain Routing Protocol (ISO 10747) which has been defined by the IDRP for IP document [IDRP] for use in Auton...

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