OSPF Two-Part Metric (RFC8042)
Original Publication Date: 2016-Dec-01
Included in the Prior Art Database: 2016-Dec-29
Internet Society Requests For Comment (RFCs)
Z. Zhang: AUTHOR [+3]
With Open Shortest Path First (OSPF) [RFC2328] [RFC5340]), a Network- LSA (Link State Advertisement) is advertised to list all routers on a broadcast network. Additionally, each router on the broadcast network includes a link in its Router-LSA to describe its connection to the network. The link in the Router-LSA includes a metric but the listed routers in the Network-LSA do not include a metric. This is based on the assumption that from a particular router, all others on the same network can be reached with the same metric.
Internet Engineering Task Force (IETF) Z. Zhang Request for Comments: 8042 L. Wang Updates: 2328 Juniper Networks, Inc. Category: Standards Track A. Lindem ISSN: 2070-1721 Cisco Systems December 2016
OSPF Two-Part Metric
This document specifies an optional OSPF protocol extension to represent router metrics in a multi-access network in two parts: the metric from the router to the network and the metric from the network to the router. For such networks, the router-to-router metric for OSPF route computation is the sum of the two parts. This document updates RFC 2328.
Status of This Memo
This is an Internet Standards Track document.
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). Further information on Internet Standards is available in 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 http://www.rfc-editor.org/info/rfc8042.
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Zhang, et al. Standards Track [Page 1]
RFC 8042 OSPF Two-Part Metric December 2016
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Requirements Language . . . . . . . . . . . . . . . . . . 3
2. Proposed Enhancement . . . . . . . . . . . . . . . . . . . . 3
3. Specifications . . . . . . . ....