draft-ietf-bmwg-igp-dataplane-conv-app-06.txt   draft-ietf-bmwg-igp-dataplane-conv-app-07.txt 
Network Working Group Network Working Group
INTERNET-DRAFT INTERNET-DRAFT
Expires in: December 2005 Expires in: January 2006
Scott Poretsky Scott Poretsky
Quarry Technologies Reef Point Systems
June 2005 July 2005
Considerations for Benchmarking Considerations for Benchmarking
IGP Data Plane Route Convergence IGP Data Plane Route Convergence
<draft-ietf-bmwg-igp-dataplane-conv-app-06.txt> <draft-ietf-bmwg-igp-dataplane-conv-app-07.txt>
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benchmarking the data plane. For this reason it is important to benchmarking the data plane. For this reason it is important to
develop a standard router benchmarking methodology and terminology develop a standard router benchmarking methodology and terminology
for measuring IGP convergence that uses the data plane as described for measuring IGP convergence that uses the data plane as described
in [1] and [2]. This document describes all of the factors that in [1] and [2]. This document describes all of the factors that
influence a convergence measurement and how a purely black box test influence a convergence measurement and how a purely black box test
can be designed to account for all of these factors. This enables can be designed to account for all of these factors. This enables
accurate benchmarking and evaluation for route convergence time. accurate benchmarking and evaluation for route convergence time.
2. Existing definitions 2. Existing definitions
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "JUNE", and "OPTIONAL" in this "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in BCP 14, RFC 2119 document are to be interpreted as described in BCP 14, RFC 2119
[Br97]. RFC 2119 defines the use of these key words to help make the [Br97]. RFC 2119 defines the use of these key words to help make the
intent of standards track documents as clear as possible. While this intent of standards track documents as clear as possible. While this
document uses these keywords, this document is not a standards track document uses these keywords, this document is not a standards track
document. document.
3. Factors for IGP Route Convergence Time 3. Factors for IGP Route Convergence Time
There are four major categories of factors contributing to the There are four major categories of factors contributing to the
measured Router IGP Convergence Time. As discussed in [5], [6], measured Router IGP Convergence Time. As discussed in [5], [6],
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Thanks to Curtis Villamizar for sharing so much of his Thanks to Curtis Villamizar for sharing so much of his
knowledge and experience through the years. Also, special knowledge and experience through the years. Also, special
thanks to the many Network Engineers and Network Architects thanks to the many Network Engineers and Network Architects
at the Service Providers who are always eager to discuss at the Service Providers who are always eager to discuss
Route Convergence benchmarking. Route Convergence benchmarking.
IGP Data Plane Route Convergence IGP Data Plane Route Convergence
8. Normative References 8. Normative References
[1] Poretsky, S., "Benchmarking Methodology for IGP Data Plane [1] Poretsky, S., "Benchmarking Methodology for IGP Data Plane
Route Convergence", draft-ietf-bmwg-igp-dataplane-conv-meth-06, Route Convergence", draft-ietf-bmwg-igp-dataplane-conv-meth-07,
work in progress, June 2005. work in progress, July 2005.
[2] Poretsky, S., "Benchmarking Terminology for IGP Data Plane [2] Poretsky, S., "Benchmarking Terminology for IGP Data Plane
Route Convergence", draft-ietf-bmwg-igp-dataplane-conv-term-06, Route Convergence", draft-ietf-bmwg-igp-dataplane-conv-term-07,
work in progress, June 2005. work in progress, July 2005.
[3] Callon, R., "Use of OSI IS-IS for Routing in TCP/IP and Dual [3] Callon, R., "Use of OSI IS-IS for Routing in TCP/IP and Dual
Environments", RFC 1195, December 1990. Environments", RFC 1195, December 1990.
[4] Moy, J., "OSPF Version 2", RFC 2328, IETF, April 1998. [4] Moy, J., "OSPF Version 2", RFC 2328, IETF, April 1998.
[5] Villamizar, C., "Convergence and Restoration Techniques for [5] Villamizar, C., "Convergence and Restoration Techniques for
ISP Interior Routing", NANOG 25, October 2002. ISP Interior Routing", NANOG 25, October 2002.
[6] Katz, D., "Why are we Scared of SPF? IGP Scaling and [6] Katz, D., "Why are we Scared of SPF? IGP Scaling and
skipping to change at page 5, line 41 skipping to change at page 5, line 41
[8] Alaettinoglu, C. and Casner, S., "ISIS Routing on the Qwest [8] Alaettinoglu, C. and Casner, S., "ISIS Routing on the Qwest
Backbone: a Recipe for Subsecond ISIS Convergence", NANOG 24, Backbone: a Recipe for Subsecond ISIS Convergence", NANOG 24,
October 2002. October 2002.
[9] Alaettinoglu, C., Jacobson, V., and Yu, H., "Towards [9] Alaettinoglu, C., Jacobson, V., and Yu, H., "Towards
Millisecond IGP Convergence", NANOG 20, October 2000. Millisecond IGP Convergence", NANOG 20, October 2000.
9. Author's Address 9. Author's Address
Scott Poretsky Scott Poretsky
Quarry Technologies Reef Point Systems
8 New England Executive Park 8 New England Executive Park
Burlington, MA 01803 Burlington, MA 01803
USA USA
Phone: + 1 781 395 5090 Phone: + 1 781 395 5090
EMail: sporetsky@quarrytech.com EMail: sporetsky@quarrytech.com
IGP Data Plane Route Convergence IGP Data Plane Route Convergence
Full Copyright Statement Full Copyright Statement
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Acknowledgement Acknowledgement
Funding for the RFC Editor function is currently provided by the Funding for the RFC Editor function is currently provided by the
Internet Society. Internet Society.
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