doc/fig-rs-processing.txt

   1 From Peer A
   2  | From RS-Client B
   3  |  | From RS-Client C
   4  |  |  | From RS-Client D
   5  |  |  |  |
   6  |  |  |  |           Main / Normal RIB
   7  |  |  |  |      ________________________________
   8  |  |  |  |     /    _________     _________     \
   9  |  |  |  +--->|(D)-|Best     |   | Main    |     |
  10  |  |  +--|--->|(C)-|Path     |-->|Local-RIB|->[A]|--->To Peer A
  11  |  +--|--|--->|(B)-|Selection|   |         |     |
  12  +--|--|--|--->|(A)-|_________|   |_________|     |
  13  |  |  |  |     \________________________________/
  14  |  |  |  |
  15  |  |  |  |          ________________________________
  16  |  |  |  |          /    _________     _________     \
  17  |  |  |  +--->*D*->|{B}-|Best     |   |RS-Client|     |
  18  |  |  +--|--->*C*->|{B}-|Path     |-->|Local-RIB|->[B]|--->To RS-Client B
  19  |  |  |  |         |    |Selection|   |  for B  |     |
  20  +--|--|--|-------->|{B}-|_________|   |_________|     |
  21  |  |  |  |          \________________________________/
  22  |  |  |  |
  23  |  |  |  |          ________________________________
  24  |  |  |  |          /    _________     _________     \
  25  |  |  |  +--->*D*->|{C}-|Best     |   |RS-Client|     |
  26  |  |  |  |         |    |Path     |-->|Local-RIB|->[C]|--->To RS-Client C
  27  |  +--|--|--->*B*->|{C}-|Selection|   |  for C  |     |
  28  +--|--|--|-------->|{C}-|_________|   |_________|     |
  29  |  |  |             \________________________________/
  30  |  |  |
  31  |  |  |              ________________________________
  32  |  |  |             /    _________     _________     \
  33  |  |  |            |    |Best     |   |RS-Client|     |
  34  |  |  +------>*C*->|{D}-|Path     |-->|Local-RIB|->[D]|--->To RS-Client D
  35  |  +--------->*B*->|{D}-|Selection|   |  for D  |     |
  36  +----------------->|{D}-|_________|   |_________|     |
  37                      \________________________________/
  38
  39
  40 Key:  (X) - 'In'  Filter applied to Peer X's announcements before
  41             considering announcement for the normal main Local-RIB
  42       [X] - 'Out' Filter applied to announcements to Peer X
  43       *X* - 'Export' Filter of RS-Client X, to apply X's policies
  44             before its routes may be considered for other RS-Clients
  45             RIBs.
  46       {X} - 'Import' Filter of RS-Client X, to apply X's policies
  47             on routes before allowing them into X's RIB.