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LISP-DDT XFR draft-wiley-lisp-ddtxfer-01

LISP-DDT XFR draft-wiley-lisp-ddtxfer-01. gwiley@verisign.com <Glen Wiley> mgibbs@verisign.com <Michael Gibbs>. What Problem?. Currently few LISP-DDT nodes in service LISP-DDT root configuration ride has been a little bumpy

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LISP-DDT XFR draft-wiley-lisp-ddtxfer-01

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  1. LISP-DDT XFRdraft-wiley-lisp-ddtxfer-01 gwiley@verisign.com <Glen Wiley> mgibbs@verisign.com <Michael Gibbs>

  2. What Problem? • Currently few LISP-DDT nodes in service • LISP-DDT root configuration ride has been a little bumpy • How will the current approach scale in both depth of hierarchy, number of DDT nodes? LISP-DDT XFR

  3. Current LISP-DDT Configuration • Current LISP-DDT root configuration • Does this format scale to large data sets? • Does it scale to high node count? • Operationally robust? • Standards for handling the file is one possible solution. LISP-DDT XFR

  4. Current LISP-DDT Root Config lisp ddt lisp ddt child 158.38.1.91 instance-id 223 lisp ddt child 173.36.254.167 instance-id 223 lispddtchild 158.38.1.91 instance-id 0 eid-prefix 153.16.0.0/16 lispddtchild 173.36.254.167 instance-id 0 eid-prefix 153.16.0.0/16 lispddtchild 158.38.1.91 instance-id 0 eid-prefix 2604:a800:1::/48 lispddtchild 173.36.254.167 instance-id 0 eid-prefix 2604:a800:1::/48 lispddtchild 158.38.1.91 instance-id 0 eid-prefix 2610:d0::/32 lispddtchild 173.36.254.167 instance-id 0 eid-prefix 2610:d0::/32 lisp ddt authoritative-prefix * LISP-DDT XFR

  5. World Peace! • LISP-DDT XFR is offered as one possible solution • draft-wiley-lisp-ddtxfr describes the protocol used to accomplish the transfer of the delegated portion of the LISP-DDT tree • Modeled after DNS zone transfers LISP-DDT XFR

  6. DNS • DNS faced with similar problem • DNS zone is a portion of the DNS tree • AXFR = entire zone is transferred • IXFR = deltas are transferred (based on SN) • NOTIFY is used to advise name servers of changes to zone LISP-DDT XFR

  7. Terminology • LISP-DDT entry is a mapping between an Extended-EID prefix and an RLOC for a map server or DDT node • LISP-DDT XFR server: device receiving XFR request • LISP-DDT XFR client: device sending XFR request LISP-DDT XFR

  8. Six easy pieces • DDT nodes implement LISP-DDT XFR in order to exchange pieces of the DDT tree • Transfers are as granular as the delegation of authority • Serial number identifies a unique version of the delegated portion of the LISP-DDT tree LISP-DDT XFR

  9. Six easy pieces (continued) • Full transfer sends all DDT entries for the delegated portion of the tree • Incremental transfer sends only DDT entries that have changed • LISP-DDT XFR client may subscribe to LISP-DDT XFR server and be notified of changes to tree LISP-DDT XFR

  10. Is IXFR harmful to your health? • LISP-DDT XFR client tells LISP-DDT XFR server which SN it has • LISP-DDT XFR server replies with a transfer that includes deltas between client SN and current SN • OR server replies with a full transfer • Deltas are optional for server – the server may choose to maintain as many (or as few) deltas as is operationally sensible LISP-DDT XFR

  11. Next Steps • Continue to collect data from ongoing LISP-DDT implementation • Incorporate LISP-DDT SEC • Reference implementation LISP-DDT XFR

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