Babel routing protocol
|Document||Charter||Babel routing protocol WG (babel)|
|Title||Babel routing protocol|
|IESG||Responsible AD||Andrew Alston|
|Charter edit AD||Andrew Alston|
|Send notices email@example.com|
Babel is a loop-avoiding, distance vector routing protocol with good provisions for dynamically computed link metrics. The core of the Babel protocol and security extensions are described in Experimental Independent Stream RFCs 6126, 7557, and 7298. These RFCs are the basis of three independent, open source implementations. There is some production deployment of these implementations, notably in hybrid networks (networks that include classical, wired parts with meshy radio bits) and in global overlay networks (networks built out of large numbers of tunnels spanning continents). The Working Group will focus on moving the Babel protocol to IETF Proposed Standard with IETF review. This includes clarifying RFC 6126 and integrating RFC 7557 and feedback provided by independent implementations, and resolving comments. It is not a requirement that the Babel protocol produced is backwards compatible with RFC 6126. It is a requirement that Babel support at least one profile that is auto-configuring. Other documents that are relevant to the above work can also be produced. Particular emphasis will be placed on work needed for a Proposed Standard routing protocol, such as ensuring manageability and strong security. Link metric measurement or link metric calculation procedures significantly more complex that those currently in Babel are out of scope. The Babel WG should coordinate with other Working Groups, such as the HOMENET WG for likely applicability, the RTGWG and V6OPS WG about Source-Specific Routing to support IPv6 multihoming, the PIM WG for discussion around multicast, and the MANET WG for considerations around wireless. The Babel WG should liaise as necessary with the Broadband Forum to facilitate use of the Babel Information Model for TR-069. Work Items: - Produce a revision of RFC 6126 suitable for publication as a Proposed Standard -- incorporate in the revision developments since RFC 6126 -- resolve technical issues found -- include in the base specification the extensibility work in RFC 7557 -- support auto-configuration -- consider any important changes based on experience with Babel to date. - Address security needs for BABEL. This may include using the techniques in RFC 7298, or other alternatives. Security may be included in the base spec or the base spec may normatively reference a separate Proposed Standard specification. This is required as part of moving Babel to Proposed Standard. - Address manageability of Babel by producing a Babel informational model to help provide guidance and derive the data models. This information model is useful as a common source of information for the case where the Customer-Premise Equipment (CPE) is managed by the Service Provider (SP) with the Broadband Forum TR-069 protocol and its associated data model. To be consistent with the ongoing effort to use YANG data models in the Routing Area, a Babel YANG data model should be specified to support management of Babel routers. - As the Proposed Standard version of Babel is completed, an Applicability Statement should be finalized to guide those potentially interested in deploying Babel. This Applicability Statement may include deployment advice and will be published as an RFC. - The Working Group should document its ongoing implementation experience with Babel, so that new WG participants can understand the state that is driving this work and the experience driving changes. This documentation may be on the Working Group's wiki, in an internet-draft that isn't expected to be published as an RFC, or a combination. - As a non-primary focus, the Working Group may work on multicast aspects of Babel. This may include discussion of any potential issues for supporting Babel running with PIM-SM in an auto-configuration profile. It may include exploring Babel carrying separate metrics for multicast. It may include discussion and consultation with the PIM WG about Babel providing the ability to build multicast routing tables. With AD and WG agreement, once an approach is understood, then a milestone may be added for an associated document targeted as Proposed Standard. - As a non-primary focus, the Working Group may work on documents defining source specific routing extensions for Babel as a way of handling IPv6 multihoming.