Subject: [PWE3] Some questions about RFC5605(ATM PWE3 MIB), thks

From: chenjinjin 35876 <[email-masked]>
Date: Sat, 17 Jul 2010 10:17:20 +0800

When I read RFC5605, I have some questions. 
   1. In Nto1 mode, There are two Tables(pwAtmOutboundNto1Table and pwAtmInboundNto1Table), and they represent two directions of upstream and downstream respectively.But the descriptions of the leaf pwAtmOutboundNto1AtmIf and pwAtmInboundNto1AtmIf are completely the same in the RFC, They are both noted as "The ATM Interface that receives cells from the ATM network", Are they considered the same object in the model?
   2. As the figure below, Do they respectively correspond the MIB leafs as:
         (1)vpi1/vci1 -> pwAtmOutboundNto1Vpi/pwAtmOutboundNto1Vci.
         (2)vpi2/vci2 -> pwAtmOutboundNto1MappedVpi/pwAtmOutboundNto1MappedVci. (But the leaf's description is "The egress-generated VPI value of this ATM PW", how to comprehend the word 'egress-generated'? It seams more likely to be the vpi/vci of cells generated by or derived from PE2 -- If so, according to the description, Whether the (3)vpi3/vci3 of inbound direction is more fit?)
         (3)vpi3/vci3 -> pwAtmInboundNto1MappedVpi/pwAtmInboundNto1MappedVci
         (4)vpi4/vci4 -> pwAtmInboundNto1Vpi/pwAtmInboundNto1Vci
   Whether the corresponding relationship is correct?
                                                                
                 ------------------------------> OutBound                                                

           (1)vpi1/vci1           (2)vpi2/vci2                             
           ----->       +----+     ----->       +----+           
  +-----+               | PE1|==================| PE2|          +-----+
  |     |---------------|............PW1.............|----------|     |
  | CE1 |  <-----       |    |     <-----       |    |          | CE2 |
  |     |  (4)vpi4/vci4 |    |    (3)vpi3/vci3  |    |----------|     |
  +-----+               |    |==================|    |          +-----+
                        +----+                  +----+           
                    
                  InBound <------------------------------                                                

     regards
                                                            Jim
                                                            Huawei Ltd.,Co