Indication on whether a WSON node is 'Reconfigurable or not'

[haomianzheng]

This is related with another comments from ietf-layer0-types.
ietf-ccamp-wg/draft-ietf-ccamp-layer0-types#6

According to the conclusion of this issue, the node type won't be specified in ietf-layer0-types (as they are WSON-specific, not L0-general). There will be a new leaf 'is-reconfigurable-node', in type boolean, in the WSON topology module to indicate whether the WSON node is reconfigurable or not.

Setting to 1 means reconfigurable, as a ROADM; while setting to 0 means not reconfigurable, as a FOADM.

[haomianzheng]

Proposal as follow:

OLD
grouping wson-node-attributes {
description "WSON node attributes";
container wson-node {
description "WSON node attrtibutes";
leaf node-type {
type identityref {
base layer0-types:layer0-node-type;
}
description "WSON node type";
}
}
}

NEW
grouping wson-node-attributes {
description "WSON node attributes";
container wson-node {
description "Candidate type: ROADM or FOADM";
leaf is-reconfigurable-node {
type boolean;
description
"true - ROADM,
false - FOADM. ";
}
}
}

[italobusi]

Some proposed changes:

1. Some editorial changes
2. make the definition more generic and applicable also to abstract TE nodes
3. add a default value
4. define the wson-node as a presence container: Comments on layer0-node-type draft-ietf-ccamp-layer0-types#6 (comment)

  grouping wson-node-attributes {
    description "WSON node attributes";
    container wson-node {
      presence "The TE node is a WSON node.";
      description "WSON node attributes";
      leaf is-reconfigurable-node {
        type boolean;
        default true;
        description
          "Indicates whether the WSON node is reconfigurable:
           - true: the node is reconfigurable
             (e.g., it is representing a ROADM node);
           - false: the node is not reconfigurable
             (e.g., it is representing a FOADM node).";
      }
    }
  }

[italobusi]

I think PR #3 is addressing this issue

I have linked this open issue with PR#3 so it will be automatically closed when the PR#3 is merged