1. Authors: Scott Poretsky, Quarry Technologies Brent Imhoff, LightCore
IGP Data Plane Convergence Benchmarking draft-ietf-bmwg-igp-dataplane-conv-app-05.txt draft-ietf-bmwg-igp-dataplane-conv-term-05.txt draft -ietf-bmwg-igp-dataplane-conv-meth-05.txt
Authors:
Scott Poretsky, Quarry Technologies
Brent Imhoff, LightCore
62nd IETF Meeting – Minneapolis

2. Version History
3 documents for work item = methodology, terminology, and considerations
Had a WG Last Call for –03 revisions of all 3 docs prior to IETF 60 BMWG meeting where additional comments received.
-04 revisions posted to incorporate comments made during IETF 60.
Additional comments to –04 were received at IETF 61 BMWG meeting and electronically. These necessitated a –05.
-05 posted for all 3 docs to incorporate (final?) comments prior to IETF 62.

3. Summary of Terminology -05 Changes
Updated to preferred Existing Definitions Statement
Changed equation 3 and added comment in Discussion for Sustained Convergence Time
“(eq 3) Sustained Forwarding Convergence Time =
5 x (# routes in FIB) / (Offered Load)
for which at least one packet per destination MUST be received at the DUT.”
Added note that the “Next-Best Egress Interface” must be the same link speed and media type as the “Preferred Egress Interface”.
Added definition for “Nested Convergence Events”
“The occurrence of Convergence Event while the route table is converging from a prior Convergence Event.”

4. Summary of Methodology -05 Changes
Updated to preferred Existing Definitions Statement
Added note in Introduction that Methodologies apply to IPv4 and IPv6 traffic and IGPs.
Paragraph Interface Types was written so that any interface type can be used (previously recommended SONET)
Added note to paragraph Convergence Time Metrics that “The Packet Sampling Interval value is the smallest measurable convergence time.”

5. Next Steps Any other comments? Ready for another WG Last Call?
Ready for IESG Review?