2.3. Data Items for the Control of Credit Windows

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Original RFC Text

2.3.  Data Items for the Control of Credit Windows

   Five new Data Items are defined to support the control of credit
   windows:

   *  The Credit Window Initialization Data Item (Section 2.3.1) is used
      by a modem to identify a credit window and set its size.

   *  The Credit Window Association Data Item (Section 2.3.2) is used by
      a modem to identify which TIDs (flows) should be used when sending
      traffic to a particular DLEP-identified destination.

   *  The Credit Window Grant Data Item (Section 2.3.3) is used by a
      modem to provide additional credits to a router.

   *  The Credit Window Status Data Item (Section 2.3.4) is used to
      advertise the sender's view of the number of available credits for
      state synchronization purposes.

   *  The Credit Window Request Data Item (Section 2.3.5) is used by a
      router to request additional credits.

   Any errors or inconsistencies encountered in parsing Data Items are
   handled in the same fashion as any other Data Item parsing error
   encountered in DLEP; see [RFC8175].  In particular, the node parsing
   the Data Item MUST terminate the session with a Status Data Item
   [RFC8175] indicating "Invalid Data".