Dynamic Hostname Exchange Mechanism for OSPF
RFC 5642
Document | Type | RFC - Proposed Standard (August 2009; No errata) | |
---|---|---|---|
Authors | Subbaiah Venkata , Sanjay , Carlos Pignataro , Danny McPherson | ||
Last updated | 2015-10-14 | ||
Replaces | draft-venkata-ospf-dynamic-hostname | ||
Stream | Internet Engineering Task Force (IETF) | ||
Formats | plain text html pdf htmlized (tools) htmlized bibtex | ||
Reviews | |||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 5642 (Proposed Standard) | |
Action Holders |
(None)
|
||
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Ross Callon | ||
Send notices to | (None) |
Network Working Group S. Venkata Request for Comments: 5642 Google Inc. Category: Standards Track S. Harwani C. Pignataro Cisco Systems D. McPherson Arbor Networks, Inc. August 2009 Dynamic Hostname Exchange Mechanism for OSPF Abstract This document defines a new OSPF Router Information (RI) TLV that allows OSPF routers to flood their hostname-to-Router-ID mapping information across an OSPF network to provide a simple and dynamic mechanism for routers running OSPF to learn about symbolic hostnames, just like for routers running IS-IS. This mechanism is applicable to both OSPFv2 and OSPFv3. 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. Copyright Notice Copyright (c) 2009 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 in effect on the date of publication of this document (http://trustee.ietf.org/license-info). Please review these documents carefully, as they describe your rights and restrictions with respect to this document. This document may contain material from IETF Documents or IETF Contributions published or made publicly available before November 10, 2008. The person(s) controlling the copyright in some of this material may not have granted the IETF Trust the right to allow modifications of such material outside the IETF Standards Process. Without obtaining an adequate license from the person(s) controlling the copyright in such materials, this document may not be modified outside the IETF Standards Process, and derivative works of it may Venkata, et al. Standards Track [Page 1] RFC 5642 Dynamic Hostnames for OSPF August 2009 not be created outside the IETF Standards Process, except to format it for publication as an RFC or to translate it into languages other than English. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.1. Specification of Requirements . . . . . . . . . . . . . . . 3 2. Possible Solutions . . . . . . . . . . . . . . . . . . . . . . 3 3. Implementation . . . . . . . . . . . . . . . . . . . . . . . . 4 3.1. Dynamic Hostname TLV . . . . . . . . . . . . . . . . . . . 4 3.1.1. Flooding Scope . . . . . . . . . . . . . . . . . . . . 5 3.1.2. Multiple OSPF Instances . . . . . . . . . . . . . . . . 5 4. IPv6 Considerations . . . . . . . . . . . . . . . . . . . . . . 6 5. Security Considerations . . . . . . . . . . . . . . . . . . . . 6 6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 7 7. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . 7 8. References . . . . . . . . . . . . . . . . . . . . . . . . . . 7 8.1. Normative References . . . . . . . . . . . . . . . . . . . 7 8.2. Informative References . . . . . . . . . . . . . . . . . . 7 1. Introduction OSPF uses a 32-bit Router ID to uniquely represent and identify a node in the network. For management and operational reasons, network operators need to check the status of OSPF adjacencies, entries in the routing table, and the content of the OSPF link state database. When looking at diagnostic information, numerical representations of Router IDs (e.g., dotted-decimal or hexadecimal representations) are less clear to humans than symbolic names. One way to overcome this problem is to define a hostname-to-Router-ID mapping table on a router. This mapping can be used bidirectionally (e.g., to find symbolic names for Router IDs and to find Router IDs for symbolic names) or unidirectionally (e.g., to find symbolic hostnames for Router IDs). Thus, every router has to maintain a table with mappings between router names and Router IDs. These tables need to contain all names and Router IDs of all routers in the network. If these mapping tables are built by static definitions, it can currently become a manual and tedious process in operational networks; modifying these static mapping entries when additions, deletions, or changes occur becomes a non-scalable processShow full document text