1. Deepak Kumar Zitao Wang Qin Wu Reshad Rahman Srihari Raghavan
LIME Connectionless Model Updates draft-ietf-lime-yang-connectionless-oam-02 draft-ietf-lime-yang-connectionless-oam-methods-00
Deepak Kumar
Zitao Wang
Qin Wu
Reshad Rahman
Srihari Raghavan
IETF 97

2. Activities since IETF 96 Three interim meetings
One for CO model
One for CL model
One for BFD & Lime
Several discussions in list
Split the model into two;
The relationship with technology specific models;
Augment vs Schema Mount, etc.
Have requested YANG doctor/coordinator review
IETF 97

3. Updates since IETF 96 Split CL model into two
One for CL model
One for retrieval method
Add a section to introduce CL model applicability
Use both model defined in protocol working group and CL model as basis and augment the “CL" model with technology specific groupings.
Update the CL model according to previous discussions.
Added some descriptions to explain the relationship with topo model
The "tools" attributes were modified to "ro" (read only).
Some CO related attributes(e.g. tools-mpls-tp, L3VPN cases) were removed from CL model.
IETF 97

4. relationship with other OAM YANG model work
How do we describe the relationship between them?
The model described in protocol working group (like BFD, etc) is defined as standalone models,
Users can augment the LIME model with technology specific details (groupings defined in technology specific model) to support LIME scenarios.
IETF 97

5. Other Questions (2) Augment method VS Schema Mount method
CL base model
augment
CL base model
Schema mount
Reusing grouping
Technology specific model
Technology specific models
like bfd single-hop model, bfd
Multi-hop model, etc.
Technology specific
Groupings are defined in technology specific model
Reusing grouping
Technology specific model
Reusing grouping
Fig 1. Augment method
Fig 2. schema mount method
Pro
Con
Augment base model
Supported by YANG 1.0 and YANG 1.1, mature
N/A
Schema mount
Allow one model to be inserted into another model
Premature, It doesn’t support specific module be mounted under a mount point yet in the current version.
IETF 97