Transcript A Different Type of Network

Connect. Communicate. Collaborate
Network Operations in a Multi-Domain
Management Environment
Dai Davies
DANTE
TERENA Networking Conference
9 June 2005
Poznan, Poland
GÉANT2 – What’s NEW
• Service Portfolio
– Point-to Point Services
• Gigagbit Ethernet
• Wavelength services ?!?
• Performance Enhancement Team
• New Measurement Framework
Connect. Communicate. Collaborate
Connect. Communicate. Collaborate
Network Performance Problems
• Historically, long distance circuits (the “wide-area”)
have been the bottleneck in a network
• In recent years, the capacity of long distance circuits
has significantly increased
• End-to-end performance bottle-necks may now occur
at any point in a system – end-system (application,
OS, hardware), LAN or WAN
• As such, it is becoming more and more difficult for a
non-expert end-user to diagnose their network
performance issues
The Solution –
Connect. Communicate. Collaborate
Performance Enhancement & Response Team
• Purpose
– To help troubleshoot network problems and to give specialist
advice on performance issues
• History
– Conceived by Internet2, 2001
– Realized by the European NRENs and DANTE, 2002
– Production service, March 2005
• Organization
– Virtual team of Case Managers and Subject Matter Experts
– Problems diagnosed with Performance Monitoring tools,
managed with the PERT Ticket System (PTS) and lessons
learned added to the PERT Knowledgebase (PERT KB)
Connect. Communicate. Collaborate
The Virtual Team
• Case Managers
– Part-time staff provided by GÉANT2 project participants
– On a roster to ensure continuous cover during normal working
– Cross-discipline experts who are capable of identifying the
locations of performance bottle-necks
• Subject Matter Experts
– Unfunded volunteers from a potentially wide variety of
organizations who provide help on a best efforts basis
– Have specialist knowledge in one or more subjects and so can
precisely diagnose the cause of a given problem and help the
end-users resolve it
Measurement Scope
Connect. Communicate. Collaborate
• Provide accessibility to measurement information from
several networks through a well defined interface.
– The framework should allow each network to edit it’s
own resource access policy.
• Benefits:
– Better understanding of what’s happening on the
network.
– Ease troubleshooting.
– Decouple the visualisation/analyse from the tool and/or
the data provider.
Measurement Scope 2
Connect. Communicate. Collaborate
• Users targeted: NOC, projects, end-users
• Three main areas of work:
– Design and implement the framework.
– Integrate selected measurement tools within the infrastructure
• DFN IPPM (OWD, RTT, traceroute), BWCTL (TCP throughput), RRD
(link utilisation).
• At a later stage: netflow, packet capture type of measurements.
– Build or enhance visualisation tools to demonstrate the added value
of the framework.
• Prototype – ready by the end of the summer.
Performance Measurement Today
Connect. Communicate. Collaborate
Information available
only by the local
managers
GEANT
?
NREN
?
NREN
?
LAN
LAN
?
?
User A
User B
Main Objective: Share
Measurement Information
Connect. Communicate. Collaborate
Information available
(authorisation based)
GEANT
Last Mile, a different
approach?
NREN
NREN
LAN
LAN
User A
User B
Measurement Framework Architecture
Connect. Communicate. Collaborate
Web Reference
http://www.geant2.net
PERT: http://www.geant2.net/pert
JRA1: http://www.geant2.net/research
Connect. Communicate. Collaborate