draft-ietf-mpls-crldp-unnum-05.txt   draft-ietf-mpls-crldp-unnum-06.txt 
Network Working Group Kireeti Kompella Network Working Group Kireeti Kompella
Internet Draft Juniper Networks Internet Draft Juniper Networks
Expiration Date: September 2002 Yakov Rekhter Expiration Date: December 2002 Yakov Rekhter
Juniper Networks Juniper Networks
Alan Kullberg Alan Kullberg
NetPlane Systems NetPlane Systems
Signalling Unnumbered Links in CR-LDP Signalling Unnumbered Links in CR-LDP
draft-ietf-mpls-crldp-unnum-05.txt draft-ietf-mpls-crldp-unnum-06.txt
1. Status of this Memo 1. Status of this Memo
This document is an Internet-Draft and is in full conformance with This document is an Internet-Draft and is in full conformance with
all provisions of Section 10 of RFC2026. all provisions of Section 10 of RFC2026.
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF), its areas, and its working groups. Note that Task Force (IETF), its areas, and its working groups. Note that
other groups may also distribute working documents as Internet- other groups may also distribute working documents as Internet-
Drafts. Drafts.
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unnumbered links. This document defines procedures and extensions to unnumbered links. This document defines procedures and extensions to
CR-LDP, one of the MPLS TE signalling protocols, that are needed in CR-LDP, one of the MPLS TE signalling protocols, that are needed in
order to support unnumbered links. order to support unnumbered links.
3. Overview 3. Overview
Supporting MPLS TE over unnumbered links (i.e., links that do not Supporting MPLS TE over unnumbered links (i.e., links that do not
have IP addresses) involves two components: (a) the ability to carry have IP addresses) involves two components: (a) the ability to carry
(TE) information about unnumbered links in IGP TE extensions (ISIS or (TE) information about unnumbered links in IGP TE extensions (ISIS or
OSPF), and (b) the ability to specify unnumbered links in MPLS TE OSPF), and (b) the ability to specify unnumbered links in MPLS TE
signalling. The former is covered in [ISIS-TE, OSPF-TE]. The focus signalling. The former is covered in [GMPLS-ISIS, GMPLS-OSPF]. The
of this document is on the latter. focus of this document is on the latter.
Current signalling used by MPLS TE doesn't provide support for Current signalling used by MPLS TE doesn't provide support for
unnumbered links because the current signalling doesn't provide a way unnumbered links because the current signalling doesn't provide a way
to indicate an unnumbered link in its Explicit Route Objects. This to indicate an unnumbered link in its Explicit Route Objects. This
document proposes simple procedures and extensions that allow CR-LDP document proposes simple procedures and extensions that allow CR-LDP
signalling [CR-LDP] to be used with unnumbered links. signalling [CR-LDP] to be used with unnumbered links.
4. Link Identifiers 4. Link Identifiers
An unnumbered link has to be a point-to-point link. An LSR at each An unnumbered link has to be a point-to-point link. An LSR at each
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This document raises no new security concerns for CR-LDP. This document raises no new security concerns for CR-LDP.
8. Acknowledgments 8. Acknowledgments
Thanks to Rahul Aggarwal for his comments on the text. Thanks too to Thanks to Rahul Aggarwal for his comments on the text. Thanks too to
Bora Akyol and Vach Kompella. Bora Akyol and Vach Kompella.
9. References 9. References
[LINK-BUNDLE] Kompella, K., Rekhter, Y., and Berger, L., "Link 9.1. Normative references
Bundling in MPLS Traffic Engineering", draft-kompella-mpls-
bundle-05.txt (work in progress)
[CR-LDP] Jamoussi, B., editor, "Constraint-Based LSP Setup using [CR-LDP] Jamoussi, B., editor, "Constraint-Based LSP Setup using
LDP", draft-ietf-mpls-cr-ldp-04.txt (work in progress) LDP", RFC3212, December 2001
[GMPLS-SIG] Ashwood, P., et al., "Generalized MPLS - Signalling [GMPLS-SIG] Ashwood, P., et al., "Generalized MPLS - Signalling
Functional Description", draft-ietf-generalized-mpls- Functional Description", draft-ietf-generalized-mpls-
signalling-05.txt signalling-08.txt
[GMPLS-CRLDP] Ashwood, P., et al., "Generalized MPLS Signaling - CR- [GMPLS-CRLDP] Ashwood, P., et al., "Generalized MPLS Signaling - CR-
LDP Extensions", draft-ietf-mpls-generalized-cr-ldp-04.txt LDP Extensions", draft-ietf-mpls-generalized-cr-ldp-06.txt
[ISIS-TE] Smit, H., and Li, T., "IS-IS extensions for Traffic 9.2. Non-normative references
Engineering", draft-ietf-isis-traffic-02.txt (work in progress)
[LINK-BUNDLE] Kompella, K., Rekhter, Y., and Berger, L., "Link
Bundling in MPLS Traffic Engineering", draft-kompella-mpls-
bundle-05.txt (work in progress)
[LSP-HIER] Kompella, K., and Rekhter, Y., "LSP Hierarchy with MPLS [LSP-HIER] Kompella, K., and Rekhter, Y., "LSP Hierarchy with MPLS
TE", draft-ietf-mpls-lsp-hierarchy-02.txt (work in progress) TE", draft-ietf-mpls-lsp-hierarchy-02.txt (work in progress)
[OSPF-TE] Katz, D., and Yeung, D., "Traffic Engineering Extensions to [LMP] Lang, J., Mitra, K., et al., "Link Management Protocol (LMP)",
OSPF", draft-katz-yeung-ospf-traffic-04.txt (work in progress) draft-ietf-ccamp-lmp-03.txt (work in progress)
[GMPLS-ISIS] Kompella, K., Rekhter, Y., Banerjee, A. et al, "IS-IS
Extensions in Support of Generalized MPLS", draft-ietf-isis-gmpls-
extensions-11.txt (work in progress)
[GMPLS-OSPF] Kompella, K., Rekhter, Y., Banerjee, A. et al, "OSPF
Extensions in Support of Generalized MPLS", draft-ietf-ccamp-ospf-
gmpls-extensions-07.txt (work in progress)
10. Author Information 10. Author Information
Kireeti Kompella Kireeti Kompella
Juniper Networks, Inc. Juniper Networks, Inc.
1194 N. Mathilda Ave. 1194 N. Mathilda Ave.
Sunnyvale, CA 94089 Sunnyvale, CA 94089
e-mail: kireeti@juniper.net e-mail: kireeti@juniper.net
Yakov Rekhter Yakov Rekhter
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