Technology agnostic OSPF-TE extensions for GMPLS draft-bccgd-ccamp-gmpls-opsf-agnostic-00 CCAMP WG, IETF 79 th Beijing

Authors/Contributors Sergio Belotti Diego Caviglia Daniele Ceccarelli John Drake Francesco Fondelli Pietro Grandi Dan Li Lyndon Ong Jonathan Sadler Eve Varma Fatai Zhang

Agenda General agreement Purpose of the document Bandwidth Accounting sub-TLV Example Improvements Next steps

General Agreement Agreement among authors/contributors Extension to encoding in RFC4202 Bandwidth advertisement per signal type Field for distinction between Unreserved Bandwidth and Max LSP bandwidth advertisement Priority support

Purpose of the ID Defining an tool: Advertising bandwidth per signal type Technology agnostic Future proof Scalable Minimizing recovery time: poor routing is often cause of crank-backs The Bandwidth Accounting sub-TLV is the building block for technology specific extensions and enhancements not the solution. Technology specific documents can improve the BA sub-TLV in order to gain scalability, efficiency etc.

The root of the tree Technology Agnostic ID draft-bccgd-ccamp-gmpls-ospf-agnostic Bandwidth Accounting sub-TLV OTN specific ID draft-ceccarelli-ccamp-gmpls-ospf-g709 SDH specific ID draft-ong-ccamp-gmpls-ospf-sdh MPLS-TP specific ID wip

Bandwidth Accounting - SubTLV Service Type: e.g. VC4, ODU2, ODUflex M field: 0 - Unreserved Bandwidth 1 - Max LSP bandwidth 2-3 Technology specific (e.g. Available bandwidth for MPLS-TP: unused link bandwidth available for additional non-traffic engineered IP/LDP forwarding and can be used as input to a node’s equal cost multipath load balancing function”) T.S. Flags: Technology specific flags to be defined in technology specific documents: e.g. Tributary Slot dimension, Priority: 8 GMPLS priorities Priority: Byte/sec in IEEE floating point unless differently specified (e.g. OTN number of Service Types)

Example Supported priorities 0,3 Link comp #1 (10Gbps) Stype: A fixed Stype: B variable Link comp #1 (10Gbps) Stype: C fixed Stype: B variable Multiple variable service stype can be advertised AB LC #1–10G-A,B LC #2–40G-B,C

Improvements Bandwidth Efficiency – Priority bitmap

Next steps Collect feedbacks from the meeting Continue collecting feedbacks from the ML Work on technology specific documents upon WG consensus OTN SDH MPLS-TP WG document?

QUESTIONS ? THANK YOU