New work item proposal: Protection Performance Benchmarking Takumi Kimura takumi.kimura@lab.ntt.co.jp 54th IETF - Yokohama, Japan
Motivation Background • Reliability needs for IP networks • Protection technology to improve reliability – Automatic Protection Switching (APS) for SONET/SDH – Resilient Packet Ring (RPR) for Ethernet • Recovery timing in IP-layer is different from that in lower layer (I/F up/down recognizing mechanism, buffering effect, etc. on IP routers) Carrier needs • Testing methodology to compare implementations objectively and to verify interoperability for multi-vendor protection systems • Specified performance measures to quantify reliability on the carrier providing network to users 2
Goals • Specify testing methodology of protection performance as followings: – At first, focus on SONET/SDH APS performance – Performance measures considered in IP-layer aspects – Flexibility for topology of system under test (SUT) Point-to-Point, Ring, Mesh – Coverage of different protection types (1+1, 1:n, etc.) – Applicability to multi-vendor protection systems 3
Protection performance measurement examples in IP-layer quality aspects Test setup System Under Test (SUT) Protection trigger OADM Router Sender OADM Router Receiver Protection OADM Light path Expected effects on IP-layer quality Dropped packets Out-of-order packets 7 5 6 3 4 2 1 7 6 2 1 Duplicate packets Induced delay 2 1 4 3 2 1 6 5 4 4 3 4
Proposal • Consider this work item in the BMWG • Draft documents will specify testing terminology and methodology on SONET/SDH APS performance in IP-layer quality aspects • Any suggestion? 5
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