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Endpoint Name Resolution Protocol

Endpoint Name Resolution Protocol. <draft-ietf-rserpool-enrp-04.txt> Presenter: Qiaobing Xie Email: QXIE1@motorola.com November 18, 2002. Changes made btw 03 and 04. allows PU to use TCP for name query and response created separate msg type space for enrp

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Endpoint Name Resolution Protocol

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  1. Endpoint Name Resolution Protocol <draft-ietf-rserpool-enrp-04.txt> Presenter: Qiaobing Xie Email: QXIE1@motorola.com November 18, 2002

  2. Changes made btw 03 and 04 • allows PU to use TCP for name query and response • created separate msg type space for enrp • brought back the step-fathering mechanism to support auditing • added back the three messages to signal a takeover. • PEER_INIT_TAKEOVER 0x7 • PEER_INIT_TAKEOVER_ACK 0x8 • PEER_TAKEOVER_SERVER 0x9 • added home server stamp field (server ID) to PE param (in the comm-param draft) • each server now keeps two table: my PEs and others' PEs (not a MUST). • Server "owns" the PE when accepting its (re)-registration.

  3. Changes made btw 03 and 04 (cont.) • added a new change-ownership message to say "I am now the new owner of these PE IDs of these pools" • added takeover procedures • after a successful takeover, all peer servers will need to seek out and re-stamp the affected PEs in their database. • added back a notify to PE: I am now your new home server (implicitly by sending a keep-alive to the PE) • added back periodic keep-alives to owe PEs (optional to use) • replaced "action code" in reg and de-reg response with new response message types. • added error msg format and text on handling unrecognized msg and params

  4. Changes made btw 03 and 04 (cont.) • added auditing procedures back (pt. 1) • added “download only PE entries that you own” message for re-sync • Added re-sync algorithm: when mismatch with server B is found by server A, A will do: • “flag” anything belonging to B in its local database • tell B: “please download me a list of all PEs you own” • replace the PEs owned by B with the new copy received; and • remove the remaining "flagged" PEs.

  5. To-do’s and open issues • to add auditing algorithm and procedures back (pt. 2). Randy has already provided base text • open issue: the use of multicast in peer discovery causes some security concerns. What to do with it? • Since the use of multicast is optional, we simply make clear(er) that “use multicast at your own risk” • Remove multicast entirely • Add some mechanisms to plug the security holes

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