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IETF RFC 6601
[ACTIVE]

Generic Connection Admission Control (GCAC) Algorithm Specification for IP/MPLS Networks

Metadata

Publisher
IETF
Doc Type
Experimental
Pages
34
Abstract
This document presents a generic connection admission control (GCAC) reference model and algorithm for IP-/MPLS-based networks. Service provider (SP) IP/MPLS networks need an MPLS GCAC mechanism, as one motivational example, to reject Voice over IP (VoIP) calls when additional calls would adversely affect calls already in progress. Without MPLS GCAC, connections on congested links will suffer degraded quality. The MPLS GCAC algorithm can be optionally implemented in vendor equipment and deployed by service providers. MPLS GCAC interoperates between vendor equipment and across multiple service provider domains. The MPLS GCAC algorithm uses available standard mechanisms for MPLS-based networks, such as RSVP, Diffserv-aware MPLS Traffic Engineering (DS-TE), Path Computation Element (PCE), Next Steps in Signaling (NSIS), Diffserv, and OSPF. The MPLS GCAC algorithm does not include aspects of CAC that might be considered vendor proprietary implementations, such as detailed path selection mechanisms. MPLS GCAC functions are implemented in a distributed manner to deliver the objective Quality of Service (QoS) for specified QoS constraints. The objective is that the source is able to compute a source route with high likelihood that via-elements along the selected path will in fact admit the request. In some cases (e.g., multiple Autonomous Systems (ASes)), this objective cannot always be met, but this document summarizes methods that partially meet this objective. MPLS GCAC is applicable to any service or flow that must meet an objective QoS (delay, jitter, packet loss rate) for a specified quantity of traffic. This document defines an Experimental Protocol for the Internet community.
Publication Date
2012-04-01
Status Note
Experimental
DOI
10.17487/RFC6601
Link
https://doi.org/10.17487/RFC6601
Author(s)
Gerald Ash
Dave McDysan
Latest version of IETF RFC 6601

Document Versions — IETF RFC 6601

  • ▶ IETF RFC 6601 (2012-04-01)
    THIS DOC [ACTIVE] [LATEST VERSION]

Normative Reference(s)

Bibliographic Reference(s)

  • Optical Interworking Forum (OIF), "External Network- Network Interface (E-NNI) OSPFv2-based Routing - 2.0 (Intra-Carrier) Implementation Agreement", IA # OIF- ENNI-OSPF-02.0, July 13, 2011. EXTERNAL
  • ATM Forum Technical Committee, "Private Network-Network Interface Specification Version 1.1 (PNNI 1.1)", af-pnni-0055.002, April 2002. EXTERNAL
  • Gredler, H., Farrel, A., Medved, J., and S. Previdi, "North-Bound Distribution of Link-State and TE Information using BGP", Work in Progress, March 2012. EXTERNAL
  • "Multi-vendor Carrier Ethernet Interoperability Event", Carrier Ethernet World Congress 2006, Madrid Spain, September 2006. EXTERNAL
  • Ash, G., "Traffic Engineering and QoS Optimization of Integrated Voice and Data Networks", Elsevier, 2006. EXTERNAL
  • Ashwood-Smith, P., Jamoussi, B., Fedyk, D., and D. Skalecki, "Improving Topology Data Base Accuracy with Label Switched Path Feedback in Constraint Based Label Distribution Protocol", Work in Progress, June 2003. EXTERNAL
  • IETF RFC 2597 [Active*]
  • IETF RFC 3246 [Active*]
  • IETF RFC 4090 [Active*]
  • IETF RFC 4125 [Active*]
  • IETF RFC 4126 [Active*]
  • IETF RFC 4127 [Active*]
  • IETF RFC 4412 [Active*]
  • IETF RFC 4655 [Active*]
  • IETF RFC 4657 [Active*]
  • IETF RFC 5069 [Active*]
  • IETF RFC 5152 [Active*]
  • IETF RFC 5440 [Active*]
  • IETF RFC 5441 [Active*]
  • IETF RFC 5462 [Active*]
  • IETF RFC 5865 [Active*]
  • IETF RFC 5971 [Active*]
  • IETF RFC 5974 [Active*]
  • IETF RFC 5975 [Active*]
  • RFC5976 — RFC5976 EXTERNAL
  • IETF RFC 6401 [Active*]
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IETF RFC 6601, Generic Connection Admission Control (GCAC) Algorithm Specification for IP/MPLS Networks. Available at https://doi.org/10.17487/RFC6601
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IETF RFC 6601, Generic Connection Admission Control (GCAC) Algorithm Specification for IP/MPLS Networks. Available at https://doi.org/10.17487/RFC6601

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IETF RFC 6601, Generic Connection Admission Control (GCAC) Algorithm Specification for IP/MPLS Networks. Available at https://doi.org/10.17487/RFC6601
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<span class="citation"><cite>IETF RFC 6601</cite>, Generic Connection Admission Control (GCAC) Algorithm Specification for IP/MPLS Networks. Available at <a href="https://doi.org/10.17487/RFC6601" target="_blank" rel="noopener">https://doi.org/10.17487/RFC6601</a></span>

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IETF RFC 6601, Generic Connection Admission Control (GCAC) Algorithm Specification for IP/MPLS Networks
doi: 10.17487/RFC6601
url: https://doi.org/10.17487/RFC6601
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<cite id="bib-rfc6601">IETF RFC 6601</cite>, Generic Connection Admission Control (GCAC) Algorithm Specification for IP/MPLS Networks
<span class="doi">10.17487/RFC6601</span>
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