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- Source Demand Routing (sdr)
-
- Charter
-
- Chair(s):
- Deborah Estrin <estrin@isi.edu>
- Tony Li <tli@cisco.com>
-
- Routing Area Director(s)
- Bob Hinden <hinden@eng.sun.com>
-
- Mailing lists:
- General Discussion:sdrp@caldera.usc.edu
- To Subscribe: sdrp-request@caldera.usc.edu
- Archive: jerico.usc.edu:~/pub/sdrp
-
- Description of Working Group:
-
- The SDR Working Group is chartered to specify and promote the use of
- SDR (Source Demand Routing Protocol) as an interdomain routing protocol
- capability in conjunction with IDRP and BGP interdomain routing
- protocols. The purpose of SDR is to support source-initiated selection
- of interdomain routes, to complement the intermediate node selection
- provided by BGP/IDRP.
-
- The goal of the SDR working group is to release the components of SDR
- as IETF Prototypes and to obtain operational experience with SDR in the
- Internet. Once there is enough experience with SDR the working group
- will submit the SDR components to the IESG for standardization.
-
- SDR has four components: Packet formats for protocol control messages
- and encapsulation of user datagrams, Processing and forwarding of user
- data and control messages, Routing information distribution/collection
- and route computation, Configuration and usage.
-
-
- Our strategy is to:
-
- 1. Define the format, processing and forwarding of user datagram and
- control messages so that SDR can be used very early on as an efficient
- means of supporting "configured" inter-domain routes. User packets are
- encapsulated along with the source route and forwarded along the
- "configured" route. Routes are static at the inter-domain level, but
- are not static in terms of the intra-domain paths that packets will
- take between specified points in the SDR route. The impact of
- encapsulation on MTU, ICMP, performance, etc., are among the issues
- that must be evaluated before deployment.
-
- 2. Develop simple schemes for a) collecting dynamic domain-level
- connectivity information, and b) route construction based on this
- information, so that those domains that want to can make use of a
- richer, and dynamic set of SDR routes.
-
- 3. In parallel with 1 and 2, develop usage and configuration documents
- and prototypes that demonstrate the utility of static-SDR and
- simple-dynamic-SDR.
-
- 4. After gaining some experience with the simple schemes for
- distribution, develop a second generation of information distribution
- and route construction schemes. We hope to benefit from discussions
- with IDPR and NIMROD developers at this future stage because the issues
- faced are similar.
-
- 5. We will also investigate the addition of security options into the
- SDRP forwarding and packet format specifications.
-
- Goals and Milestones:
-
- Mar 93 Post an Internet Draft of packet forwarding and control message
- format and protocol for IP.
-
- Jun 93 Post as an Internet Draft the SDR MIB.
-
- Jun 93 Post as an Internet Draft the SDR Usage and Configuration document.
- This is the highest priority after the draft spec in order to
- demonstrate how even static-SDR can be used to achieve concrete
- objectives.
-
- Sep 93 Post as an Internet Draft the BGP/IDRP Extensions Specification. As
- mentioned in the Internet Draft there are a few extensions to
- BGP/IDRP needed to support SDR. These must be detailed and
- documented.
-
- Sep 93 Submit as an Internet Draft a specification for Route Setup.
-
- Nov 93 Post as an Internet Draft a SDR Deployment Plan.
-
- Dec 93 Post as an Internet Draft a document describing the
- distribution/acquisition of Information to construct richer SDR
- routes. The initial versions of SDR will use only configured
- information (some of which may be derived from BGP/IDRP) as the basis
- for constructing source routes.
-
- Dec 93 Post as an Internet Draft a specification for SDR Multicast.
-
- Mar 94 Submit the set of SDR specifiations to the IESG for consideration as
- a Proposed Standard.
-
- Mar 94 Submit the set of SDR specifications to the IESG for consideration as
- a Prototype protocol.
-
-
- Internet Drafts:
-
- No Current Internet drafts.
-
- Request For Comments:
-
- None to date.
-