1
Scope
2 References
3 Terms and definitions
4 Abbreviations
5 ASON routing architecture
5.1 Fundamental concepts
5.2 Routing architecture and
functional components
5.2.1 Considerations for different protocols
5.2.2 Considerations for multiple VPNs
5.2.3 Considerations for policy
5.3 Routing area hierarchies
5.3.1 Routing performer realization in relation
to routing Area hierarchies
5.3.2 Correspondence between LRM and RCs
for hierarchical routing areas
6 ASON routing requirements
6.1 Architectural requirements
6.2 Protocol requirements
6.3 Path selection requirements
7 Routing attributes
7.1 Node attributes
7.1.1 Reachability attributes
7.1.2 Diversity related attributes
7.1.3 Other attribute information
7.2 Link attributes
7.2.1 Link state
7.2.2 Diversity related attributes
7.2.3 Other attribute information
8 Routing messages
8.1 Routing adjacency maintenance
8.2 Routing information messages
8.3 Routing exception and error
handling
8.4 State diagrams
8.4.1 Information element transmission
8.4.2 Information element reception
8.4.3 Local information element
transmission generation
9 Routing message distribution
topology
9.1 Congruent topology
9.2 Hubbed topology using a routing
message server
9.3 Directed topology
10 Path selection
10.1 Inputs to path selection
10.1.1 Step-by-step routing
10.1.2 Source and hierarchical routing
10.2 Output of path selection
10.3 Routing paradigms and path selection
Appendix I – Information flow between levels of the
routing hierarchy
I.1 Information dissemination related to
resolving end-point addresses
I.1.1 Parent to child information flow
I.1.2 Child to parent information flow
I.2 Information exchange between
hierarchical levels for resolving end-point addresses
Appendix
II – Shared Risk Group
II.1 Path diversity
II.2 Network resources and risk sharing
II.3 Shared Risk Group (SRG)
II.4 SRG implications for routing