Network performance measurements and cross-layer communication research

opportunities on LEARN

Deniz Gurkan, Charles Chambers, Tesfaye Kumbi,

Maanasa Madiraju, and Karthik R. Naramuchi

University of HoustonFeb. 18, 2011

Performance and Provisioning

• GENI racks and ION/DYNES initiative will enable high bandwidth data flow

• Performance of the network can be used to better provision the network– Quality of service metrics and throughput range– perfSONAR hooks: LEARN investment is in

progress to measure and evaluate performance

Measurements

Topology

LEARN DYNES

rt1-hardy-hstnJuniper MX480

rt1-akard-dllsJuniper MX480

LEARN DYNES

switch in HSTN

LEARN DYNES

switch in DLLS

TTU

Direct connection from switch at 400 S. Akard

LEARN

LEARNInterdomain

Controller (IDC)

LEARN IDC would be on an Internet2

connected network

Rice University

Directly connected via RENoH dark fiber

Internet2 IP & DYNES VLANs

Internet2 IP &

DYNES VLANs

LEARN Layer3backbone

LEARN Layer 3 backbone would be used to pass

control plane information and vlan traffic that needs to pass between DLLS and

HSTN.

University of Houston Directly

connected via RENoH dark fiber

UT Dallas

UT Arlington

SMU

UT Dallas, UT Arlington and SMU connected via LEARN-DFW infrastructure

Internet2 HSTNrouter

Internet2 KANSrouter

Internet2 Backbone

Multi-domain Optical Networks

• Most physical layer measurements available through CLI or SNMP polls to the optical equipment

• Different vendors with varying naming and access conventions

• Access, storage, configuration

Physical Layer Measurements

Information Model

• IETF – CCAMP working group: e.g., Performance Measurement Metrics of Label Switched Path (LSP) Establishment in Multi-Layer and Multi-Domain Networks (draft-jiyf-ccamp-lsp-00)

• ITU-T standards• Embedded (internal) measurements:

– Infinera DTN– Ciena Core Director– Etc.

Optical Impairments

Standards and Protocols• perfSONAR: add optical physical layer measurements

– GENI IMF project goal• IF-MAP, SNMP, syslog

– IF-MAP: integrated approach to access, share, and store in a dynamic fashion

– SNMP and syslog: poll, no data unification

• Network Description Language (NDL) with a Resource Description Framework (RDF)– Common language towards an ontology for optical

networks

Abstraction of Information

Better Provisioning with QoS metrics

• Measurements from layer 0 up to 4 as parameters for quality metrics

• Instantaneous feedback from network links instead of indirect reasoning on low throughput

• Transition from optical circuit networking towards optical packet switching

Cross-layer Research

What to measure, how to share, where to utilize the measurements

Optical Physical Layer Measurements

Hybrid(Ciena/Infinera)

Hybrid(Ciena/Infinera)

InfineraInfinera

CienaCiena

CIENA InfineraDTN

ADVAOptical Fujitsu

FamilyROADM

Information Model

Unify Terminology

Catalog Measurement

Catalog Impairment What measurement are of interest

What measurements are available

Each measurement parameters refer to save thing

Communication of measurement

Information

mᵢ mk mj ml

Example: Mi1=BER Mj1=

Thank you!

dgurkan@uh.edu