The IESG has approved the following document: - 'Load Balancing for Mesh Softwires ' <draft-ietf-softwire-lb-03.txt> as a Proposed Standard This document is the product of the Softwires Working Group. The IESG contact persons are Ralph Droms and Jari Arkko. A URL of this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-softwire-lb-03.txt Technical Summary Payloads carried over a Softwire mesh service as defined by BGP Encapsulation Subsequent Address Family Identifier (SAFI) information exchange often carry a number of identifiable, distinct flows. It can in some circumstances be desirable to distribute these flows over the equal cost multiple paths (ECMPs) that exist in the packet switched network. Currently, the payload of a packet entering the Softwire can only be interpreted by the ingress and egress routers. Thus the load balancing decision of a core router is only based on the encapsulating header, presenting much less entropy than available in the payload or the encapsulated header since the Softwire encapsulation acts in a tunneling fashion. This document describes a method for achieving comparable load balancing efficiency in a network carrying Softwire mesh service over Layer Two Tunneling Protocol - Version 3 (L2TPv3) over IP or Generic Routing Encapsulation (GRE) encapsulation to what would be achieved without such encapsulation. Working Group Summary The SOFTWIRE WG supports the development and advancement of this document. Document Quality This document was thoroughly reviewed by WG chairs and WG members, including those with expertise in IPv4 to IPv6 transitions and interworking. Personnel David Ward (dward@cisco.com) is the document shepherd. Ralph Droms (rdroms@cisco.com) is the responsible Area Director. RFC Editor Note Expanding section 4, Security Considerations: OLD: There are no additional security risks introduced by this design. NEW: This document defines a new sub-TLV for the BGP Tunnel Encapsulation Attribute. Security considerations for the BGP Encapsulation SAFI and the BGP Tunnel Encapsulation Attribute are covered in [RFC5512]. There are no additional security risks introduced by this design. _______________________________________________ IETF-Announce@ietf.org https://www.ietf.org/mailman/listinfo/ietf-announce
