Using%20RSVPv1%20as%20NTLP%20(NSIS%20Transport%20Layer%20Protocol):%20suggestions%20for%20modifications%20on%20RFC2205

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Using RSVPv1 as NTLP (NSIS Transport Layer
Protocol) suggestions for modifications on
RFC2205

• Georgios.Karagiannis_at_eln.ericsson.se

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Why this presentation?

• why use RSVPv1 as NTLP?
• present a concept that uses RSVPv1 (RFC2205) as
  NTLP
• elicit feedback from the WG!

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Why use RSVPv1 as NTLP

• do not reinvent transport protocol features but
  use existing ones
• shorten the time needed to standardize NTLP by
  reusing the current RSVP design experience and
  RSVP protocol specification
• fulfil the flexibility and modularity requirement
  by
• allowing to certain scenarios to use, below NTLP,
  IETF existing protocols e.g., TCP, SCTP
• the two level architecture concept
• new features have to be supported by NSLPs

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Proposed NTLP features (1)

• support of Path-Coupled (Path-Directed)
• soft state support
• adaptation to load sharing
• exchange local information between NSIS
  Forwarders located within one single
  administrative domain
• any NSIS Forwarder is able to asynchronously
  generate a signaling message in case of
  unexpected situations
• transports application layer (NSLP) "objects"
  that are opaque to NTLP

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Proposed NTLP features (2)

• provides transparent operation through routers
  that do not support it
• supports both IPv4 and IPv6

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Proposed concept (1)

• NTLP protocol can be used for End-to-End,
  Edge-to-Edge, and End-to-Edge scenarios
• separation in two main protocol levels, transport
  (NTLP) and application (NSLP)
• proposed NTLP uses
• typically, stateful NSIS Initiators (NI), NSIS
  Responder (NR), NSIS Forwarder (NF)
• stateful NTLP aware node that maintains a NTLP
  transport layer state
• when processing optimization is required, the NF
  interior (of an administrative domain) nodes can
  be NTLP stateless nodes
• stateless NTLP aware node that does not
  maintain a NTLP transport layer state

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Proposed concept (2)
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Proposed concept (3)
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Discussion

• Is the presented concept acceptable to the WG?