draft-ietf-mpls-number-0-bw-te-lsps-07.txt   draft-ietf-mpls-number-0-bw-te-lsps-08.txt 
Networking Working Group JP. Vasseur, Ed. Networking Working Group JP. Vasseur, Ed.
Internet-Draft Cisco Systems, Inc Internet-Draft Cisco Systems, Inc
Intended status: Standards Track Matthew. R. Meyer Intended status: Standards Track Matthew. R. Meyer
Expires: May 18, 2008 Global Crossing Expires: June 5, 2008 Global Crossing
K. Kumaki K. Kumaki
KDDI Corporation KDDI Corporation
Alberto. Tempia Bonda Alberto. Tempia Bonda
Telecom Italia Telecom Italia
November 15, 2007 December 3, 2007
A Link-Type sub-TLV to convey the number of Traffic Engineering Label A Link-Type sub-TLV to convey the number of Traffic Engineering Label
Switched Paths signalled with zero reserved bandwidth across a link Switched Paths signalled with zero reserved bandwidth across a link
draft-ietf-mpls-number-0-bw-te-lsps-07 draft-ietf-mpls-number-0-bw-te-lsps-08
Status of this Memo Status of this Memo
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aware will be disclosed, in accordance with Section 6 of BCP 79. aware will be disclosed, in accordance with Section 6 of BCP 79.
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
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and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
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material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
The list of current Internet-Drafts can be accessed at The list of current Internet-Drafts can be accessed at
http://www.ietf.org/ietf/1id-abstracts.txt. http://www.ietf.org/ietf/1id-abstracts.txt.
The list of Internet-Draft Shadow Directories can be accessed at The list of Internet-Draft Shadow Directories can be accessed at
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This Internet-Draft will expire on May 18, 2008. This Internet-Draft will expire on June 5, 2008.
Copyright Notice Copyright Notice
Copyright (C) The IETF Trust (2007). Copyright (C) The IETF Trust (2007).
Abstract Abstract
Several Link-type sub-TLVs have been defined for OSPF and IS-IS in Several Link-type sub-TLVs have been defined for OSPF and IS-IS in
the context of Multiprotocol Label Switching (MPLS) Traffic the context of Multiprotocol Label Switching (MPLS) Traffic
Engineering (TE) in order to advertise some link characteristics such Engineering (TE) in order to advertise some link characteristics such
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[RFC3630] and [RFC3784]) in the context of MPLS Traffic Engineering [RFC3630] and [RFC3784]) in the context of MPLS Traffic Engineering
in order to advertise various link characteristics such as the in order to advertise various link characteristics such as the
available bandwidth, traffic engineering metric, administrative group available bandwidth, traffic engineering metric, administrative group
and so on. As currently defined in [RFC3630] and [RFC3784] the and so on. As currently defined in [RFC3630] and [RFC3784] the
information related to the number of unconstrained TE LSP(s) is not information related to the number of unconstrained TE LSP(s) is not
available. This document specifies a new Link-type Traffic available. This document specifies a new Link-type Traffic
Engineering sub-TLV used to indicate the number of unconstrained TE Engineering sub-TLV used to indicate the number of unconstrained TE
LSPs signalled across a link. LSPs signalled across a link.
Unconstrained TE LSPs that are configured and provisioned through a Unconstrained TE LSPs that are configured and provisioned through a
management system are not included in the count that is reported. management system MAY not be included in the count that is reported.
3. Protocol extensions 3. Protocol extensions
The Number of 0-bandwidth TE LSP(s) Sub-TLV is defined that specifies The Number of 0-bandwidth TE LSP(s) Sub-TLV is defined that specifies
the number of TE LSPs signalled with zero bandwidth across a link. the number of TE LSPs signalled with zero bandwidth across a link.
3.1. IS-IS 3.1. IS-IS
The Unconstrained TE LSP Count Sub-TLV is OPTIONAL and MUST NOT The Unconstrained TE LSP Count Sub-TLV is OPTIONAL and MUST NOT
appear more than once within the extended IS reachability TLV (type appear more than once within the extended IS reachability TLV (type
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