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Performance Update. Eric L. Boyd Director of Performance Architecture and Technologies Internet2. Vision: Performance Information is …. Available People can find it (Discovery) “Community of trust” allows access across administrative domain boundaries (AA) Ubiquitous

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performance update

Performance Update

Eric L. Boyd

Director of Performance Architecture and Technologies

Internet2

vision performance information is
Vision: Performance Information is …
  • Available
    • People can find it (Discovery)
    • “Community of trust” allows access across administrative domain boundaries (AA)
  • Ubiquitous
    • Widely deployed (Paths of interest covered)
    • Reliable (Consistently configured correctly)
  • Valuable
    • Actionable (Analysis suggests course of action)
    • Automatable (Applications act on data)
getting there build empower the community
Getting There: Build & Empower the Community

Decouple the Problem Space:

  • Analysis and Visualization
  • Performance Data Sharing
  • Performance Data Generation

Grow the Footprint:

  • Clean APIs between each layer
  • Widespread deployment of measurement infrastructure
  • Widespread deployment of common performance measurement tools
result no more mystery
Result: No more mystery …
  • Increase network awareness
    • Set user expectations accurately
  • Reduce diagnostic costs
    • Performance problems noticed early
    • Performance problems addressed efficiently
    • Network engineers can see & act outside their turf
  • Transform application design
    • Incorporate network intuition into application behavior
bwctl bandwidth controller
BWCTL (Bandwidth Controller)
  • What is it?

A resource allocation and scheduling daemon for arbitration of iperf tests

  • Typical Solution
    • Run “iperf” or similar tool on two endpoints and hosts on intermediate paths
  • Typical road blocks
    • Need permissions on all systems involved
    • Need to coordinate testing with others
    • Need to run software on both sides with specified test parameters
ndt network diagnostic tool
NDT: Network Diagnostic Tool
  • Web100 enhanced server handles testing and diagnostic services
  • Java based and command line clients allows testing from any client (local or remote)
  • Performance and configuration faults reported back to client
  • Drill-down functions provide more details & error reporting capabilities
  • Grant from NIH/NLM to explore duplex mismatch detection
ndt flow diagram

Well Known

NDT Server

Web Request

NDT - Server

Client

Redirect msg

Web

Browser

Web

Server

Web Page Request

Web page response

Testing

Engine

Java

Applet

Test Request

Control Channel

Spawn child

Child

Test Engine

Specific test channels

NDT Flow Diagram
owamp one way active measurement protocol
OWAMP: One-Way Active Measurement Protocol
  • What is it?
    • Measures one-way latency: 1-way ping
    • Control connection used to broker test request based upon policy restrictions and available resources. (Bandwidth/disk limits)
  • Specification
    • http://tools.ietf.org/wg/ippm/draft-ietf-ippm-owdp/draft-ietf-ippm-owdp-14.txt
thrulay overview
Thrulay Overview
  • Network capacity and delay tester
  • Same class of tools as iperf, netperf, nettest, nuttcp, ttcp, etc.
  • Unique features not found in other tools:
    • TCP: measures round-trip delay along with goodput
    • UDP: measures:
      • One-way delay, with quantiles
      • Packet loss
      • Packet duplication
      • Reordering
    • UDP: ability to send precisely positioned true Poisson streams (microsecond errors in sending times)
    • Human and machine-readable (ready to be fed to gnuplot)
thrulay update
Thrulay Update
  • New release v0.8
  • Tests with multiple TCP streams
  • Set DSCP (a.k.a. first 6 bits of the TOS byte)
  • Report MTU and/or MSS (whichever the OS makes available)
  • More UDP statistics: duplication, reordering, quantiles of delay
  • SPARC/Solaris support
  • Mac OS X support
  • IPv6 support
  • Non-busy-waiting UDP mode (less precise, but can run more concurrent tests)
  • Documentation: manual pages have been added
  • Basic client authorization based on IP address
  • Integration of TSC timekeeping projects for faster and more precise timestamping
bulk transport
Bulk Transport
  • Build a library / tool for bulk transport that does not require kernel level modifications yet achieves the performance of such
  • VFER library
    • Congestion control hooks
    • Implements loss-based congestion control
    • Working on delay-based version
  • File transfer utility
    • An initial version demoed
how can you use them
How can you use them?
  • Tools are open source, supported, well-documented
  • BWCTL/Iperf, OWAMP, NDT are deployed across Abilene backbone and at many partners
  • You can:
    • See ongoing measurement results at the Abilene Observatory
    • Test to/from the Abilene backbone
network performance measurement workshops
Network Performance Measurement Workshops
  • Example Course Materials:
    • http://e2epi.internet2.edu/npw/presentations.html

Goals:

  • Grow installed base of BWCTL/Iperf, OWAMP, and NDT at GigaPoP and regional campuses.
    • http://e2epi.internet2.edu/pipes/pmp/pmp-dir.html
  • Begin integration into IT support processes.
  • Create an installed base for perfSONAR deployment.
  • Give each participant tool-specific cookbooks.
network performance measurement workshop locations and dates
Completed

SOX / GaTech (03/05)

CENIC / UCLA (06/05)

JT – Vancouver (07/05)

OARNet / OSU (09/05)

MAGPI / FMM (09/05)

MAX / College Park (12/05)

APAN (01/06)

JT - Albuquerque (02/06)

MERIT (02/06)

Columbia / NYSERNet (04/06)

Planned

University of Virginia (04/06)

Under Consideration

Wisconsin, Alaska, …

Network Performance MeasurementWorkshop Locations and Dates
additional outreach
Additional Outreach
  • National Library of Medicine
    • Presentation on end-user tools at NLM-centric Network Performance Monitoring Pilot-project Workshop (March 2006)
  • New World Symphony
    • Presentation on end-user tools at NWS Master Class Workshop (January 2006)
    • On-going dialog on end-user needs
collaboration
Collaboration
  • Working Groups
    • Bulk Transport (transport.internet2.edu)
    • GGF Network Measurement (nmwg.internet2.edu)
    • perfSONAR (www.perfsonar.net)
  • Funded Research
    • “Bridging the Gap” (NSF)
    • Network Measurement for International Connections
  • Google Summer of Code
    • 2005 very successful
    • 2006 planned
perfsonar overview
perfSONAR Overview
  • What: Measurement infrastructure for exchanging data under development
  • How: Webservices network performance framework
    • Network measurement tools
    • Network measurement archives
    • Distributed scheduling/authorization
    • Multi-domain policy
    • Common language (GGF NMWG Schema)
  • Where: Deployed / to be deployed across:
    • Network Backbones (Abilene, ESNet, GÉANT)
    • Regional Networks (NRENs, RONs, Gigapops)
    • Universities
  • When: First product release early summer ‘06
perfsonar credits
perfSONAR is a joint effort:

ESnet

Fermilab

GÉANT2 JRA1

Internet2

RNP

Internet2 includes:

University of Delaware

Georgia Tech

Internet2 staff

GÉANT2 JRA1 includes:

Arnes

Belnet

Carnet

Cesnet

DANTE

DFN

FCCN

GRNet

ISTF

PSNC

Nordunet (Uninett)

Renater

RedIRIS

Surfnet

SWITCH

perfSONAR Credits
how can you use it
How can you use it?
  • perfSONAR Link Utilization and Capacity data available from Abilene, ESnet, GÉANT (prototype)
  • Build your own components to integrate into open source framework
perfsonar project activity meter
perfSONAR: Project Activity Meter
  • 1-2 conf calls/week
  • 1 new service/month (accelerating)
  • 3-4 development workshops/year
  • 3-4 paper submissions/year
perfsonar system description
perfSONAR: System Description
  • Domains represented by a set of services
  • Each domain can deploy services important to the domain
  • Analysis clients interact with service across multiple domains
perfsonar services 1
perfSONAR: Services (1)
  • Lookup Service
    • Allows the client to discover the existing services and other LS services.
    • Dynamic: services registration themselves to the LS and mention their capabilities, they can also leave or be removed if a service gets down.
  • AuthN/Z Service
    • Internet2 MAT, GN2-JRA5 (eduGAIN)
    • Authorization functionality for the framework
    • Users can have several roles, the authorisation is done based on the user role.
    • Trust relationships defined between users affiliated with different administrative domains.
perfsonar services 2
perfSONAR Services (2)
  • Transformation Service
    • Transform the data (aggregation, concatenation, correlation, translation, etc).
  • Topology Service
    • Make the network topology information available to the framework.
    • Find the closest MP, provide topology information for visualisation tools
  • Resource protector
    • Arbitrate the consumption of limited resources between multiple services.
inter domain perfsonar example interaction
Inter-domain perfSonar example interaction

Useful graph

Client

Token MA

Here is who I am, I’d like to access MA B

Here is who I am, I’d like to access MA A

Token MB

a,b,c : Network A, MA A, AA A

Where Link utilisation along - Path a,b,c?

AA A

Here you go

Get Link utilisation a,b,c

Get link utilisation c,d,e,f

AA B

Here you go

a,b,c: Network A – LS A,

c,d,e,f : Network B, MA B, AA B

Where Link utilisation along - Path a,b,c,d,e,f?

LS A

LS B

MA B

MA A

a

b

f

e

c

d

Network A

Network B

perfsonar status update
perfSONAR: Status Update
  • Production release of base package expected by June (code freeze next week)
  • Will include:
    • Single domain LS solution
    • RRD MA
    • (no AS)
  • Additional services and client applications supporting this version will soon follow:
    • BWCTL MP
    • perfSONAR UI
perfsonar hot topics
perfSONAR: Hot Topics
  • Multi-domain hierarchical LS
  • AuthN/Z development plan with JRA-5 (eduGAIN)
  • SSH MP (LookingGlass) service
  • Topology Services
  • L2 specific MA service
perfsonar current developments
MPs

SSH/Telnet (Looking Glass)

ABW (bandwidth packet capture cards)

BWCTL

NMS (SDH status)

SNMP

Command line (OWAMP, Ping, Traceroute)

MAs

RRD

SQL

TopS

BWCTL

Hades (owd, jitter, owpl)

Flow replicator

Visualization Clients

CNM

perfSONAR UI

Visual perfsonar

Looking glass

perfSONAR: Current Developments
perfsonar authn z plans
perfSONAR: authN/Z plans
  • perfSONAR(JRA-1)/JRA-5 sub-group
  • Group tasked with determining how to leverage JRA-5 authentication system (eduGAIN) in perfSONAR infrastructure
    • Jeff Boote (Internet2)
    • Diego Lopez (RedIRIS)
    • Maurizio Molina (Dante)
    • Andreas Solberg (Uninett)
perfsonar background
perfSONAR: Background
  • Designed with Federated authentication in mind
  • AS becomes a ‘proxy’ for Authorization requests
edugain background
eduGAIN: Background
  • JRA-5 provided authentication “interface”
  • Provides “bridging” to other authentication systems
    • Shibboleth
    • PAPI
    • Others…
  • Designed mostly with web-browser interaction in mind
current status
Current Status
  • Group has come to general consensus on how this should work
  • Paper is currently underway describing interaction of perfSONAR with eduGAIN API
perfsonar trust relationship entities
perfSONAR: Trust relationship entities
  • Client
  • idP (identity provider)
  • pSR (perfSONAR resource “service”)
  • AS (perfSONAR AS service)
  • HLS (Home Location Service)
implications for jra 5
Implications for JRA-5
  • Future extensibility for multiple X.509 root CA certificates
  • Non-web profile for authN attribute request
  • Current identity provider servers (attribute stores) may need to hold attributes for non-human clients
  • Others???
implications for jra 1
Implications for JRA-1
  • AS has slightly different role
    • Clients never directly interact with AS
    • AS is effectively a ‘proxy’ between services and the eduGAIN ‘bridging elements’
  • Attribute requests from services to RP’s and from RP’s to AS need to be made in a ‘boolean’ fashion to protect the privacy of clients
  • Automated clients MUST have X.509 client certificates
questions concerns
Questions/Concerns
  • Let us know if you would like a copy of the ‘document’ when it is complete
  • Please feel free to send further questions/comments to Maurizio and Jeff

boote@internet2.edu

maurizio.molina@dante.org.uk

deployment
Deployment
  • Network Performance Workshops
    • Hands-on tool deployment training
    • GigaPoP/campus involvement
    • 250+ participants/11 Workshops
  • Global Deployments
    • Infrastructure (GÉANT2, RNP, Internet2, & ESnet)
    • Individual Tools (e2epi.internet2.edu/pipes/pmp/pmp-dir.html)
performance tools 1
Performance Tools (1)
  • OWAMP: One-Way Active Measurement Protocol
    • One-way Delay
  • BWCTL: Bandwidth Control
    • Wraps NLANR / DAST-created Iperf
    • Measures throughput
performance tools 2
Performance Tools (2)
  • NDT: Network Diagnostic Tool
    • Diagnoses common performance problems between a server and your laptop
    • Downloaded java applet from the web runs the tests
  • Thrulay
    • Network capacity and delay tester
    • TCP: measures round-trip delay along with goodput
    • UDP: measures: one-way delay, with quantiles; packet loss; packet duplication; reordering