Re: [Teas] TE Topology YANG Model: connectivity-matrix definition

[Igor Bryskin <[e-mail]>]

Hi Dieter,

Please note that we are modeling not just 1:1 switching, but also 1+1 splitting and merging.

Igor
From:Dieter Beller
To:Xufeng Liu,Vishnu Pavan Beeram,Igor Bryskin,Oscar Gonzalez De Dios,Tarek Saad,Himanshu Shah,Lou Berger,BRUNGARD, DEBORAH A (ATTLABS),Susan Hares,Zafar Ali (zali),Khaddam, Mazen (CCI-Atlanta),Tony Le,BELOTTI, SERGIO (SERGIO),Beller, Dieter (Dieter),Rajan Rao,Zhangxian (Xian),[e-mail],Belotti, Sergio (Nokia - IT),Anurag Sharma,
Cc:[e-mail],
Date:2017-07-21 08:31:44
Subject:TE Topology YANG Model: connectivity-matrix definition

Hi Xufeng, Igor, all,

looking again at the connectivity-matrix definition, I have the following question: based on the current definition there are multiple separate entries
for the same "from TP" to all potential "to TPs":

   +--rw connectivity-matrix* [id]
      +--rw id                          uint32
      +--rw from
      |  +--rw tp-ref?              leafref
      |  +--rw label-restriction* [inclusive-exclusive label-start]
      |     +--rw inclusive-exclusive    enumeration
      |     +--rw label-start            rt-types:generalized-label
      |     +--rw label-end?             rt-types:generalized-label
      |     +--rw range-bitmap?          binary
      +--rw to
      |  +--rw tp-ref?              leafref
      |  +--rw label-restriction* [inclusive-exclusive label-start]
      |     +--rw inclusive-exclusive    enumeration
      |     +--rw label-start            rt-types:generalized-label
      |     +--rw label-end?             rt-types:generalized-label
      |     +--rw range-bitmap?          binary

I think that it is more efficient to have a single entry for each "from TP" and a list with all potentially connectable "to TPs"

      +--rw id   uint32
      +--rw from
      |  +--rw tp-ref?   leafref
      |  +--rw label-restriction* [inclusive-exclusive label-start]
      |     +--rw inclusive-exclusive   enumeration
      |     +--rw label-start           rt-types:generalized-label
      |     +--rw label-end?            rt-types:generalized-label
      |     +--rw range-bitmap?         binary
      +--rw to-tp-list* [tp-id]
      |  +--rw tp-id   te-types:te-tp-id
      |  +--rw tp-ref?   leafref
      |  +--rw label-restriction* [inclusive-exclusive label-start]
      |     +--rw inclusive-exclusive   enumeration
      |     +--rw label-start           rt-types:generalized-label
      |     +--rw label-end?            rt-types:generalized-label
      |     +--rw range-bitmap?         binary



If the label restrictions of the "from TP" are the same (or do not exist, which is typically the case) for multiple or all connectable "to TPs", the
connectivity matrix description using the to-tp-list becomes much more compact compared to the description above. (I am not sure whether
the tp-id can be used as list index. So, if this is not correct, it has to be replace it by some other index.)


Thanks,
Dieter