draft-ietf-ccamp-grid-property-lmp-03.txt   draft-ietf-ccamp-grid-property-lmp-04.txt 
Network Working Group Q. Wang, Ed. Network Working Group Q. Wang, Ed.
Internet-Draft ZTE Internet-Draft ZTE
Intended status: Standards Track G. Zhang, Ed. Intended status: Standards Track G. Zhang, Ed.
Expires: September 22, 2016 CAICT Expires: March 26, 2017 CAICT
Y. Li Y. Li
Nanjing University Nanjing University
R. Casellas R. Casellas
CTTC CTTC
Y. Wang Y. Wang
CAICT CAICT
March 21, 2016 September 22, 2016
Link Management Protocol Extensions for Grid Property Negotiation Link Management Protocol Extensions for Grid Property Negotiation
draft-ietf-ccamp-grid-property-lmp-03 draft-ietf-ccamp-grid-property-lmp-04
Abstract Abstract
ITU-T [G.694.1] introduces the flexible-grid DWDM technique, which ITU-T [G.694.1] introduces the flexible-grid DWDM technique, which
provides a new tool that operators can implement to provide a higher provides a new tool that operators can implement to provide a higher
degree of network optimization than is possible with fixed-grid degree of network optimization than is possible with fixed-grid
systems. This document describes the extensions to the Link systems. This document describes the extensions to the Link
Management Protocol (LMP) to negotiate link grid property between the Management Protocol (LMP) to negotiate link grid property between the
adjacent DWDM nodes before the link is brought up. adjacent DWDM nodes before the link is brought up.
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Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://datatracker.ietf.org/drafts/current/. Drafts is at http://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on September 22, 2016. This Internet-Draft will expire on March 26, 2017.
Copyright Notice Copyright Notice
Copyright (c) 2016 IETF Trust and the persons identified as the Copyright (c) 2016 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of (http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
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in a "plug-and-play" manner. The control plane SHOULD allow the in a "plug-and-play" manner. The control plane SHOULD allow the
nodes at opposite ends of a link to correlate the properties that nodes at opposite ends of a link to correlate the properties that
they will apply to the link. Such a correlation SHOULD include at they will apply to the link. Such a correlation SHOULD include at
least the identities of the nodes and the identities that they apply least the identities of the nodes and the identities that they apply
to the link. As described in this draft, for ports on a link that do to the link. As described in this draft, for ports on a link that do
not have any grid properties in common, the link and its properties not have any grid properties in common, the link and its properties
SHOULD not be advertised to the PCE or other nodes in the same SHOULD not be advertised to the PCE or other nodes in the same
domain. Especially in the scenario of inter-domain, LMP can not be domain. Especially in the scenario of inter-domain, LMP can not be
replaced by some other protocol. For example, if Path Computation replaced by some other protocol. For example, if Path Computation
Element (PCE) or a serial of PCEs coordinate to compute an end-to-end Element (PCE) or a serial of PCEs coordinate to compute an end-to-end
path which crosses more than one domain, it must take the inter- path which crosses more than one domain, it should take the inter-
domain grid properties into consideration. Given the OSPF can not domain grid properties into consideration. Given the OSPF can not
advertise the attributes of the border device on the other side, the advertise the attributes of the border device on the other side, the
inter-domain attributes must be negotiated in advance, otherwise the inter-domain attributes must be negotiated in advance, otherwise the
end-to-end path may not be set up successfully. end-to-end path may not be set up successfully.
5. LMP extensions 5. LMP extensions
5.1. Grid Property Subobject 5.1. Grid Property Subobject
According to [RFC4204], the LinkSummary message is used to verify the According to [RFC4204], the LinkSummary message is used to verify the
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