BGP Class of Service Interconnection
draft-knoll-idr-cos-interconnect-12
The information below is for an old version of the document.
Document | Type |
This is an older version of an Internet-Draft whose latest revision state is "Expired".
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Author | Thomas Martin Knoll | ||
Last updated | 2014-05-11 | ||
RFC stream | (None) | ||
Formats | |||
Additional resources | |||
Stream | Stream state | (No stream defined) | |
Consensus boilerplate | Unknown | ||
RFC Editor Note | (None) | ||
IESG | IESG state | I-D Exists | |
Telechat date | (None) | ||
Responsible AD | (None) | ||
Send notices to | (None) |
draft-knoll-idr-cos-interconnect-12
#x27; for those prefixes. Waived prefix specific limitations do not supersede global limitations for the respective PHB id Code. In turn, a withdrawal of a global limitation does also withdraw any possibly existing prefix specific ones for the respective PHB id Code. All limitations have AS local scope for the advertising AS and the neighbouring AS might or might not adopt its sending behaviour to those advertised limitations. Despite the transitive nature of the new attribute, its usage for ingress limitation is confined to neighbouring ASes. Processing of the conveyed parameters is only valid for peers, who are peering with the AS specified in the ASN field of the attribute. The attribute SHOULD NOT be transitively relayed to non-adjacent interconnection partners. 4. Confidentiality Considerations The disclosure of confidential AS intrinsic information by means of the signalled Basic CoS support is of low key security concern. The disclosure of information through CoS Parameter signalling is more detailed. However, all included parameters are exchanged with direct interconnection partners and are the free choice of each AS provider. 5. IANA Considerations This document defines a new BGP Extended Community, which needs to be assigned a number by IANA within the Extended Community list. The new CoS Capability is a BGP Extended Community of regular type. It is IANA-assignable (FCFS procedure) and is transitive across ASes. A number assignment application within the numbering range of 0x00-0x3f Knoll Expires November 15, 2014 [Page 9] Internet-Draft BGP CoS Interconnect May 2014 is made to IANA. Note to RFC Editor: this section may be removed on publication as an RFC. This document defines a new BGP attribute. This attribute is optional and transitive. 6. Security Considerations This extension to BGP does not change the underlying security issues inherent in the existing BGP version. The signalled attributes are transitive with limited relay operation in the CoS Parameter Attribute case. AS peers, which use egress traffic shaper on the signalled limitations SHOULD exhaust all available BGP security features to make sure, that the signalled limitation is actually sent by the adjacent peer. 7. References 7.1. Normative References [IEEE] IEEE, "IEEE Standard for Binary Floating-Point Arithmetic", ISBN 1-5593-7653-8, 1985. [RFC1997] Chandrasekeran, R., Traina, P., and T. Li, "BGP Communities Attribute", RFC 1997, August 1996. [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. [RFC2210] Wroclawski, J., "The Use of RSVP with IETF Integrated Services", RFC 2210, September 1997. [RFC2215] Shenker, S. and J. Wroclawski, "General Characterization Parameters for Integrated Service Network Elements", RFC 2215, September 1997. [RFC2597] Heinanen, J., Baker, F., Weiss, W., and J. Wroclawski, "Assured Forwarding PHB Group", RFC 2597, June 1999. [RFC3140] Black, D., Brim, S., Carpenter, B., and F. Le Faucheur, "Per Hop Behavior Identification Codes", RFC 3140, June 2001. Knoll Expires November 15, 2014 [Page 10] Internet-Draft BGP CoS Interconnect May 2014 [RFC3246] Davie, B., Charny, A., Bennet, J., Benson, K., Le Boudec, J., Courtney, W., Davari, S., Firoiu, V., and D. Stiliadis, "An Expedited Forwarding PHB (Per-Hop Behavior)", RFC 3246, March 2002. [RFC4271] Rekhter, Y., Li, T., and S. Hares, "A Border Gateway Protocol 4 (BGP-4)", RFC 4271, January 2006. [RFC4360] Sangli, S., Tappan, D., and Y. Rekhter, "BGP Extended Communities Attribute", RFC 4360, February 2006. 7.2. Informative References [I-D.knoll-idr-qos-attribute] Knoll, T., "BGP Extended Community for QoS Marking", draft-knoll-idr-qos-attribute-13 (work in progress), January 2014. [RFC2475] Blake, S., Black, D., Carlson, M., Davies, E., Wang, Z., and W. Weiss, "An Architecture for Differentiated Services", RFC 2475, December 1998. [RFC3662] Bless, R., Nichols, K., and K. Wehrle, "A Lower Effort Per-Domain Behavior (PDB) for Differentiated Services", RFC 3662, December 2003. Author's Address Thomas Martin Knoll Chemnitz University of Technology Email: thomas.m.knoll@gmail.com Knoll Expires November 15, 2014 [Page 11]