Internet2 End-to-End Performance Internet2 End-to-End Performance - - PowerPoint PPT Presentation

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Internet2 End-to-End Performance Internet2 End-to-End Performance - - PowerPoint PPT Presentation

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Internet2 End-to-End Performance Internet2 End-to-End Performance Monitoring Initiative Update Monitoring Initiative Update Eric L. Boyd, Internet2 Eric L. Boyd, Internet2 May 21, 2003 May 21, 2003 23 June 2003 Agenda Motivation

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23 June 2003

Internet2 End-to-End Performance Monitoring Initiative Update Internet2 End-to-End Performance Monitoring Initiative Update

Eric L. Boyd, Internet2 May 21, 2003 Eric L. Boyd, Internet2 May 21, 2003

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6/23/2003 2

Agenda

  • Motivation
  • piPEs / AMI Overview
  • piPEs / AMI Deployment Plan
  • OWAMP Release
  • Demo
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6/23/2003 3

Context for E2E Performance

Even with high bandwidth network links, the Internet2 community often does not see expected performance.

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6/23/2003 4

The Wizard Gap

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A Problem

Applications Developer System Administrator LAN Administrator Campus Networking Gigapop Gigapop Backbone Campus Networking LAN Administrator System Administrator Applications Developer

How do you solve a problem along a path?

Hey, this is not working right!

The computer Is working OK Talk to the other guys Everything is AOK No other complaints The network is lightly loaded All the lights are green We don’t see anything wrong Looks fine Others are getting in ok Not our problem

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6/23/2003 6

Good Work Already Going On

Many projects and research is underway by others investigating performance on portions of the end-to-end path. E2Epi seeks to bring these efforts together to look at the end-to-end path as a complete system.

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6/23/2003 7

Can You Go Direct to the Problem?

How can you tell where is the problem? Need a tool to tell you:

  • Where the problem is.
  • The type of problem
  • Who to contact to get it fixed

Terry Gray, University of Washington

“We Need a Finger Pointing Tool”

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Gray Finger Pointing Tool

Applications Developer System Administrator LAN Administrator Campus Networking Gigapop Gigapop Backbone Campus Networking LAN Administrator System Administrator Applications Developer

Locate the Problem

Gray Finger Pointing Tool Terry Gray University of Washington

Finger Pointing Tool Time!

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Gray Finger Pointing Tool

Applications Developer System Administrator LAN Administrator Campus Networking Gigapop Gigapop Backbone Campus Networking LAN Administrator System Administrator Applications Developer

Finger Pointing Tool Time

You ARE the Weakest Link!

OK, I’ll fix it

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6/23/2003 10

Agenda

  • Motivation
  • piPEs / AMI Overview
  • piPEs / AMI Deployment Plan
  • OWAMP Release
  • Demo
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BNI AMI

  • Project: Backbone Network

Infrastructure Abilene Measurement Infrastructure

  • Goal: Instrument Next Generation

Abilene network with extensive performance measurement capabilities

  • Approach: Collaborative project among

BNI, Engineering, and E2E.

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E2E piPES

  • Project: End-to-End Performance Initiative

Performance Environment System (E2E piPES)

  • Goal: To allow end-users and network
  • perators to determine performance

capabilities, locate problems, and contact the right person to get a problem resolved.

  • Approach: Collaborative project combining

the best work of many organizations.

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The Measurement System

PMP PMP PMP PMP = Performance Measurement Point (at each Abilene Node)

The New Abilene will have measurement devices as part of its structure

Abilene

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The Measurement System

PMP PMP PMP PMP at each Campus Border

Extend the System to Campuses

Abilene

PMP Campus X PMP Campus Y

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Performance Reporting

PMP PMP PMP

Perform regular tests to provide web based Performance Reports across Abilene and for Campus-Abilene paths

Abilene

PMP Campus X PMP Campus Y

Campus-Abilene Capability Campus W – 155 Mbps Campus X – 612 Mbps Campus Y – 1000 Mbps Campus Z – 2 Mbps Abilene Capability SNVA/DNVR – 10 Gbps DNVR/IPLS – 10 Gbps IPLS/NYCM – 10 Gbps

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Reaching the End-User

PMP PMP PMP

Provide a Testing Tool for the End-Users Computer to test across campus and beyond

Abilene

PMP Campus X PMP Campus Y Host A Host B The tool reports performance of the path to a specified destination by using active tests (like to the campus border) or using stored test results from regularly scheduled tests. It also performs tests on the host system to check host tuning parameters

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Adding Path Information

PMP PMP PMP

Add PMP along paths to provide additional detail

Abilene

PMP Campus X PMP Campus Y Host A Host B Regular tests are performed between adjacent PMP and stored in a Data Repository. This information is used by the End-User tool to reduce the number or active tests needed. PMP PMP Regional Network J PMP PMP Regional Network M Gigapop S Gigapop T

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Who You Gonna Call?

PMP PMP PMP

E2E piPES will provide contact information when a segment in the path appears to have a problem

Abilene

PMP Campus X PMP Campus Y Host A Host B The test results obtained by the End-User will be passed on to the contact person PMP PMP Regional Network J PMP PMP Regional Network M Gigapop S Gigapop T

piPES Test Analysis Looks like a problem In Gigapop T. Pass these test result to: Joe@gigapopT.net

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E2E piPES Architecture

End User Interface Network Administrator Interface Culprit DB “Turn Yourself In” Culprit Interface ID Self AAA Query Culprit ID Culprit Specify end points & application family Request Test Result Testing Engine Analysis Engine Specify Test & End Nodes Send Conclusion Source Administrative Domain Interface Reply Ready, Rejected, Patience Virtual Performance Measurement DB (local to Domain) Target Administrative Domain Interface AAA and Tool Agreement Request Test Result Source PMC Target PMC AAA & Schedule Agreement Source PMP Target PMP AAA & Schedule Agreement Database Gatekeeper Web- based Display Engine Human Analysis Engine

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Testing / Analysis Engine

Problem: Encode Matt Z.’s Brain Open Questions:

  • What are measurement results are

“acceptable” for a given application (family)?

  • What tools generate those results?
  • How do you handle incomplete data?
  • How do you rank multiple result-generators?
  • What is the iterative decision tree to

understand E2E problem?

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Measurement Schema

Measurement Types? e.g. BW, Latency, Loss, Jitter Measurement Units? e.g. Seconds vs. Microseconds Map Tools to Measurements? e.g. OWAMP -> 1-way Latency Measurement Metadata? Database Table Design?

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Access, Authentication, Authorization

Roles for Access

  • Standard End-User?
  • Near Neighbor (Test Buddy)?
  • NOC Staff / Network Engineer?

Shibboleth for Implementation

  • Each campus decides who in each role
  • Others trust campus designation
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Other R&D Issues

Design system to scale (eliminate centralization)? How to “discover” PMPs? How to insert On-Demand tests into Regularly-Scheduled test set Balance centralization and distributed database requirements

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Agenda

  • Motivation
  • piPEs / AMI Overview
  • piPEs / AMI Deployment Plan
  • OWAMP Release
  • Demo
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E2E piPES Architecture v1.0

End User Interface Network Administrator Interface Culprit DB “Turn Yourself In” Culprit Interface ID Self AAA Query Culprit ID Culprit Specify end points & application family Request Test Result Testing Engine Analysis Engine Specify Test & End Nodes Send Conclusion Source Administrative Domain Interface Reply Ready, Rejected, Patience Virtual Performance Measurement DB (local to Domain) Target Administrative Domain Interface AAA and Tool Agreement Request Test Result Source PMC Target PMC AAA & Schedule Agreement Source PMP Target PMP AAA & Schedule Agreement Database Gatekeeper Web- based Display Engine Human Analysis Engine

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piPEs / AMI Rollout

AMI PMP AMI PMP AMI PMP

OWAMP PERF DB

Visualization Package

OWAMP OWAMP OWAMP

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piPEs / AMI Rollout

AMI PMP AMI PMP AMI PMP

OWAMP PERF DB

Visualization Package

OWAMP OWAMP OWAMP

Web Service

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piPEs / AMI Rollout

AMI PMP AMI PMP AMI PMP

OWAMP PERF DB

Visualization Package

OWAMP IPERF Traceroute SNMP OWAMP IPERF Traceroute SNMP OWAMP, IPERF, Traceroute, SNMP

Web Service

Traceroute PERF DB IPERF PERF DB SNMP PERF DB

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piPEs / AMI Rollout

AMI PMP AMI PMP AMI PMP

OWAMP PERF DB

Visualization Package

OWAMP IPERF Traceroute SNMP OWAMP IPERF Traceroute SNMP OWAMP, IPERF, Traceroute, SNMP

Web Service

Traceroute PERF DB IPERF PERF DB SNMP PERF DB Campus PMP Campus PMP

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piPEs / AMI Rollout

AMI PMP AMI PMP AMI PMP

OWAMP PERF DB

Visualization Package

OWAMP IPERF Traceroute SNMP OWAMP IPERF Traceroute SNMP OWAMP, IPERF, Traceroute, SNMP

Web Service

Traceroute PERF DB IPERF PERF DB SNMP PERF DB Campus PMP Campus PMP

Scheduler Web Service Configuration Package

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piPEs / AMI Development & Testing Environment

nmsX Server Server nmsX Server

Development Testing Tests Tests New Code Base Production Code

Measurement Node

New Production Code Master Measurement Node

Measurement Node Measurement Node Measurement Node

Abilene Measurement Nodes . . . . . . . . . . . . . . . . . . . . . . Base/New Production Code Tests Tests Tests

Server

Test Results Database Server Performance Visualization Tool

Measurement Node

Router Switch nms1 nms3 nms2 nms4 CDMA

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piPEs / AMI Internal Resources

Eric Boyd – piPEs development, project coordination Jeff Boote – OWAMP, piPEs development Prasad Calyam – piPEs development Chris Heermann – AMI Matt Zekauskas - AMI Susan Evett - Documentation Russ Hobby – Campus Deployment George Brett – Schema, “Grid Service”

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piPEs External Resources

Yee-Ting Li – UCL (50%) Paul Mealor – UCL (up to 100%) PhD Student – UCL (contingent on grant) Warren Matthews – SLAC Jim Ferguson et al – NLANR / DAST Nicolas Simar et al – DANTE Many early adopter volunteers

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Agenda

  • Motivation
  • piPEs / AMI Overview
  • piPEs / AMI Deployment Plan
  • OWAMP Release
  • Demo
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Latency Tests

Problem: Existing platforms are not interoperable (SURVEYOR,RIPE,…) Solution: Standards

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OWAMP

One-Way-Active-Measurement-Protocol

  • Possible due to growing availability of good time

sources

  • Wide deployment of “open” servers would allow

measurement of one-way delay to become as commonplace as measurement of RTT using ICMP tools such as ping.

  • Current Draft: draft-ietf-ippm-owdp-05.txt

–Shalunov,Teitelbaum,Zekauskas

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OWAMP Implementation

Basically:

NTP system call interface Multiple processes for recv/send loops Written as an API to allow one-off implementations

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OWAMP implementation status

Sample implementation http://owamp.internet2.edu/

  • Beta Release:

–No “policy” –No authentication/encryption –FreeBSD only

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Abilene OWAMP deployment

2 overlapping full meshes (IPv4 & IPv6)

  • 11 measurement nodes = 220 ongoing tests
  • UDP singletons
  • Rate: 10 packets/second*
  • Packetsize: (32 byte payload)*
  • Results are continuously streamed back to

“Measurement Portal” for long-term archive and data dissemination (Near real-time)

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Agenda

  • Motivation
  • piPEs / AMI Overview
  • piPEs / AMI Deployment Plan
  • OWAMP Release
  • Demo
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6/23/2003 41

More Internet2 Information

On the Web

  • www.internet2.edu
  • e2epi.internet2.edu

Email

  • Info-e2epi@internet2.edu
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Questions?

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www.internet2.edu