Transcript Smart Gird Energy Training Coalition

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 Houston
Feb. 18, 2011
Measurements
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
LEARN DYNES
Topology
LEARN
Interdomain
Controller
(IDC)
Internet2
Backbone
Internet2 HSTN
router
Internet2
IP &
DYNES
VLANs
Directly
connected
via RENoH
dark fiber
LEARN
DYNES
switch in
HSTN
LEARN
UT Dallas
Directly connected
via RENoH dark fiber
UT Arlington
Rice University
LEARN IDC
would be on
an Internet2
connected
network
Internet2
IP &
DYNES
VLANs
rt1-akard-dlls
Juniper MX480
LEARN Layer3
backbone
rt1-hardy-hstn
Juniper MX480
University of
Houston
LEARN Layer 3 backbone
would be used to pass
control plane information
and vlan traffic that needs
to pass between DLLS and
HSTN.
Internet2 KANS
router
UT Dallas, UT
Arlington and SMU
connected via
LEARN-DFW
infrastructure
LEARN
DYNES
switch in
DLLS
SMU
Direct connection
from switch at 400 S.
Akard
TTU
Physical Layer Measurements
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
Optical Impairments
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.
Abstraction of Information
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
Cross-layer Research
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
Optical Physical Layer Measurements
What to measure, how to share, where to utilize the measurements
Infinera
Communication
of measurement
Information
Hybrid
(Ciena/Infinera)
Ciena
Catalog Impairment
What measurement are of interest
Catalog Measurement
What measurements are available
Each measurement parameters refer to
save thing
Unify Terminology
Information Model
Family
ROADM
CIENA
mᵢ
Example:
Mi1=BER
Infinera
DTN
mj
ADVA
Optical
mk
Mj1=
Fujitsu
ml
Thank you!
[email protected]