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Hello Barry,
I'm not sure, whether IPPM is chartered to specify
transport layer performance metrics. I've checked the PMOL charter and it
clearly says PMOL works above transport layer. A fair conclusion would be, that
IPPM is chartered to investigate transport layer
performance.
Three questions to the chairs and to the IPPM WG come
to my mind:
Chairs: Is IPPM chartered to execute the work proposed by
Barry?
IPPM WG: If not, is there interest to
charter IPPM for such an activity?
Chairs: If not, to which WG can Barry submit his
proposal?
My personal interest in this activity is limited, saying no
support, no objection. The feedback I received from within the company I work
for is, that such an activity is relevant for application or service
providers, but not for carriers.
Regards,
Ruediger
Deutsche Telekom Netzproduktion GmbH From: ippm-bounces at ietf.org [mailto:ippm-bounces at ietf.org] On Behalf Of Barry Constantine Sent: Wednesday, October 07, 2009 12:06 AM To: ippm at ietf.org Subject: [ippm] Testing TCP Throughput Capacity in Operator Networks Hello, I work in the communications test
industry and we have seen a growing need to verify the capacity of a network in
terms of end-end TCP throughput. Most network operators use RFC-2544
based Layer 3 tests to verify the I have spoken to several network
operators and equipment providers and there is a consistent desire to test
throughput at the stateful TCP layer, at line rate speeds (1G-10G), and to
conduct these tests in a standardized manner. At a very high level, a standardized
TCP layer throughput test would: -
Run a latency test and automatically
compute the ideal TCP window size for the test
network -
Conduct a series of single and
multiple connection TCP tests and vary the window size to verify throughput per
window size -
Conduct QoS testing, tagging the TCP
connections with appropriate prioritization (DSCP, etc.) and test in the midst
of background traffic loads This is a very simplified
description of the test workflow. I would like to solicit the interest
of members within the IPPM workgroup and would like to move forward with a draft
document to describe this test in detail. Thank
you, Barry Principal Member of Technical
Staff JDSU Communication Test (formerly
Acterna) Emerging Markets and Technology
Research
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