ISIS Extensions for Flexible Ethernet
draft-zcdc-isis-flexe-extention-00

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Last updated 2017-03-13
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Network Working Group                                             Y. Zhu
Internet-Draft                                                   H. Chen
Intended status: Standards Track                           China Telecom
Expires: September 14, 2017                                        Z. Du
                                                                 M. Chen
                                                                  Huawei
                                                          March 13, 2017

                 ISIS Extensions for Flexible Ethernet
                   draft-zcdc-isis-flexe-extention-00

Abstract

   This document specifies the extensions to the IS-IS routing protocol
   to carry and flood Flex Ethernet (FlexE) link state information.  The
   FlexE link state information is necessary for a device or a
   controller to compute a path that is required to over FlexE links.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on September 14, 2017.

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Zhu, et al.            Expires September 14, 2017               [Page 1]
Internet-Draft               ISIS for FlexE                   March 2017

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Extensions for Aggregated FlexE Link  . . . . . . . . . . . .   3
     2.1.  Interface Switch Capability Descriptor  . . . . . . . . .   3
   3.  Extensions for Channelized FlexE Link . . . . . . . . . . . .   5
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   6
     4.1.  FlexE Switching Type  . . . . . . . . . . . . . . . . . .   6
     4.2.  FlexE LSP Encoding Type . . . . . . . . . . . . . . . . .   6
     4.3.  FlexE Group Sub-TLV . . . . . . . . . . . . . . . . . . .   6
     4.4.  FlexE Capable Link  . . . . . . . . . . . . . . . . . . .   7
   5.  Security Consideration  . . . . . . . . . . . . . . . . . . .   7
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   7
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   7
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .   7
     7.2.  Informative References  . . . . . . . . . . . . . . . . .   7
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   8

1.  Introduction

   Flexible Ethernet (FlexE) is defined in [FlexE], it provides a
   generic mechanism for supporting a variety of Ethernet MAC rates that
   may or may not correspond to any existing Ethernet PHY rate.  This
   includes MAC rates that are both greater than (through bonding) and
   less than (through sub-rate and channelization) the Ethernet PHY
   rates used to carry FlexE.

   A FlexE group [FlexE] can be treated as an aggregated interface that
   is composed of from 1 to n 100GBASE-R PHYs (other types of PHY, e.g.,
   400GbE under development in the IEEE P802.3bs project, may be
   supported in the future).  A FlexE link is a logic/virtual link that
   connects two adjacent FlexE groups.  When a FlexE group is considered
   as a single interface, the link connecting two FlexE groups is
   referred to as an aggregated FlexE link.  When a FlexE group is
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