draft-ietf-teas-yang-te-topo-17.txt   draft-ietf-teas-yang-te-topo-18.txt 
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Huawei Technologies Huawei Technologies
Vishnu Pavan Beeram Vishnu Pavan Beeram
Juniper Networks Juniper Networks
Tarek Saad Tarek Saad
Cisco Systems Inc Cisco Systems Inc
Himanshu Shah Himanshu Shah
Ciena Ciena
Oscar Gonzalez De Dios Oscar Gonzalez De Dios
Telefonica Telefonica
Expires: December 23, 2018 June 23, 2018 Expires: December 27, 2018 June 27, 2018
YANG Data Model for Traffic Engineering (TE) Topologies YANG Data Model for Traffic Engineering (TE) Topologies
draft-ietf-teas-yang-te-topo-17 draft-ietf-teas-yang-te-topo-18
Status of this Memo Status of this Memo
This Internet-Draft is submitted in full conformance with the This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79. provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF), its areas, and its working groups. Note that Task Force (IETF), its areas, and its working groups. Note that
other groups may also distribute working documents as Internet- other groups may also distribute working documents as Internet-
Drafts. Drafts.
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- TE Topologies are protocol independent. Information about - TE Topologies are protocol independent. Information about
topological elements may be learnt via link-state protocols, but topological elements may be learnt via link-state protocols, but
the topology can exist without being dependent on any particular the topology can exist without being dependent on any particular
protocol. protocol.
- TE Topology may not be congruent to the routing topology in a - TE Topology may not be congruent to the routing topology in a
given TE System. The routing topology is constructed based on given TE System. The routing topology is constructed based on
routing adjacencies. There isn't always a one-to-one association routing adjacencies. There isn't always a one-to-one association
between a TE-link and a routing adjacency. For example, the between a TE-link and a routing adjacency. For example, the
presence of a TE link between a pair of nodes doesn't necessarily presence of a TE link between a pair of nodes doesn't necessarily
imply the existence of a routing-adjacency between these nodes. imply the existence of a routing-adjacency between these nodes. To
learn more, see [I-D.ietf-teas-te-topo-and-tunnel-modeling] and
[I-D.ietf-teas-yang-l3-te-topo].
- Each TE Topological element has at least one information source - Each TE Topological element has at least one information source
associated with it. In some scenarios, there could be more than associated with it. In some scenarios, there could be more than
one information source associated with any given topological one information source associated with any given topological
element. element.
- TE Topologies can be hierarchical. Each node and link of a given - TE Topologies can be hierarchical. Each node and link of a given
TE Topology can be associated with respective underlay topology. TE Topology can be associated with respective underlay topology.
This means that each node and link of a given TE Topology can be This means that each node and link of a given TE Topology can be
associated with an independent stack of supporting TE Topologies. associated with an independent stack of supporting TE Topologies.
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"A YANG Data Model for Optical Transport Network "A YANG Data Model for Optical Transport Network
Topology", draft-ietf-ccamp-otn-topo-yang-03 (work in Topology", draft-ietf-ccamp-otn-topo-yang-03 (work in
progress), June 2018. progress), June 2018.
[I-D.ietf-teas-yang-l3-te-topo] [I-D.ietf-teas-yang-l3-te-topo]
Liu, X., Bryskin, I., Beeram, V., Saad, T., Shah, H., and Liu, X., Bryskin, I., Beeram, V., Saad, T., Shah, H., and
O. Dios, "YANG Data Model for Layer 3 TE Topologies", O. Dios, "YANG Data Model for Layer 3 TE Topologies",
draft-ietf-teas-yang-l3-te-topo-01 (work in progress), draft-ietf-teas-yang-l3-te-topo-01 (work in progress),
March 2018. March 2018.
[I-D.ietf-teas-te-topo-and-tunnel-modeling]
Bryskin, I., Beeram, V., Saad, T., and X. Liu, "TE
Topology and Tunnel Modeling for Transport Networks",
draft-ietf-teas-te-topo-and-tunnel-modeling-01 (work in
progress), March 2018.
11. Acknowledgments 11. Acknowledgments
The authors would like to thank Lou Berger, Sue Hares, Mazen Khaddam, The authors would like to thank Lou Berger, Sue Hares, Mazen Khaddam,
Cyril Margaria and Zafar Ali for participating in design discussions Cyril Margaria and Zafar Ali for participating in design discussions
and providing valuable insights. and providing valuable insights.
Appendix A. Complete Model Tree Structure Appendix A. Complete Model Tree Structure
module: ietf-te-topology module: ietf-te-topology
augment /nw:networks/nw:network/nw:network-types: augment /nw:networks/nw:network/nw:network-types:
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