Transcript Fall03ITF2-Europe-Meas

Performance Monitoring
Internet2 Member Meeting,
Indianapolis (IN), 13/10/03
Nicolas Simar, Network Engineer
DANTE
Performance Monitoring - Internet2 Member Meeting -- Nicolas Simar ([email protected])
What is it?
• Multi-domain Network Performance Measurement
Management Platform
– Retrieve network information from several domains through
a pre-defined interface.
– Performance Monitoring: monitoring of network
characteristics such as delay, packet loss, available
bandwidth, “traceroute”, etc
• extended to looking glass functionality
• netflow like data (to track DoS attack)
Performance Monitoring - Internet2 Member Meeting -- Nicolas Simar ([email protected])
What is it?
• Multi-domain Network Performance Measurement
Management Platform
– Management platform
• Provide an “aggregated/concatenated” view of the information
retrieved.
– Available bandwidth R1 -> R2 = x Mbps ; R2 -> R3 = y Mbps ; R3 ->
R4 = z Mbps
– Available bandwidth R1 -> R4 = min(x,y,z) Mbps
• Enable users to generate traffic and select the traffic characteristics.
– <IP (destIP, tos, size, etc); TCP/UDP (port, etc)>
• Allow to retrieve information out of several domains.
• In this presentation, the term “user” refers to an
user of the management platform.
Performance Monitoring - Internet2 Member Meeting -- Nicolas Simar ([email protected])
Where does the project come from?
• PERT - network of people aiming at addressing the
end-to-end performance problem. We need to
provide them tools (to analyse the network).
– PERT stands for Performance Emergency/Enhancement
Response Team (http://www.dante.net/tf-ngn/pert/) - starting
phase.
• Users (European National Research and
Educational Networks - NREN) and their users
(GRIDs, researchers) are requesting more and
more networks statistics.
Performance Monitoring - Internet2 Member Meeting -- Nicolas Simar ([email protected])
Overview
• Objectives
– Exchange monitored data between domains to
• Ease the troubleshooting
• Give to the network users (for instance end-site systems
administrator or advanced network users) more information about
networks-edge to network-edge performances (later on, host-to-host
or host-to-network for end-users).
• Network/service health verification.
• SLA verification.
– Re-usable parts (as much as possible).
– Must be able to cope with new type of tests/network
characteristics.
Performance Monitoring - Internet2 Member Meeting -- Nicolas Simar ([email protected])
Performance Monitoring Overview
Domain tools
Drivers
Measurement Points
Measurement Points
Performance Monitoring - Internet2 Member Meeting -- Nicolas Simar ([email protected])
Performance Monitoring Overview
Domain tools
Drivers
XXX
A
Measurement Points
B
Measurement Points
First domain info
Inter-domain 1-2 info
Provide a view on a per domain basis: Second domain info  problem located here.
Inter-domain 2-3 info Here is the output of the
Third domain info
search.
Problem between A and B
Performance Monitoring - Internet2 Member Meeting -- Nicolas Simar ([email protected])
Building blocks
• Measurement Point (MP)
– “anything” (router, piece of software, etc) capable of
providing information about network characteristics (delay,
routing info, interface status, etc)
– For a given type of measurement, different type of MPs can
be used. (e.g. delays, RIPE TTM on GÉANT, Deacon on
Cesnet, OWAMP on Abilene).
• Inter-Operability Issues (I-OI #1) (active packet format, etc).
• I-OI stands for Inter-Operability Issues. These are the ones which
need to be addressed globally by all the parties.
Performance Monitoring - Internet2 Member Meeting -- Nicolas Simar ([email protected])
Building blocks
• Interface
– Present network information from a domain, under a predefined format (I-OI #2), to the outside world.
• The information can be a single value (or a set of values) grouped as
being a characteristic of network element and/or per time interval.
• The interface could also presents concatenated information coming
from several domains.
– Allows to start measurements (I-OI #3) from/to MPs not
under our administrative authority.
Path Finder
(I-OI #4)
Performance
monitoring
Looking
glass data
AA
(I-OI #5)
Performance Monitoring - Internet2 Member Meeting -- Nicolas Simar ([email protected])
Building blocks
• Domain tool/Measurement broker
– High level functionality: negotiate tests, collects the data,
concatenates them (if requested), aggregates them (if
requested) and/or analyses them (if needed).
– Lower level functionality:
• Interrogates the “path finder” about which MPs and which domain
tools have to be contacted.
• Aggregation, concatenation, contact the MPs and other domains.
• Schedules tests, do resource management on behalf of the MPs,
negotiate test with other domains.
• Authentication, authorisation.
• Format data according to predefined format.
Performance Monitoring - Internet2 Member Meeting -- Nicolas Simar ([email protected])
Building blocks
• Path Finder
– High level functionality: find out the measurement nodes
along a path or the closest to a given IP address.
• Two cases
– the full path is given
– only end points are given
» trickier
• Could also provide the domain measurement nodes capabilities.
– Historical path variation difficult to provide
• Implies limitation concerning the end-to-end information which can
be provided.
• Work lead by SWITCH (Switzerland).
Performance Monitoring - Internet2 Member Meeting -- Nicolas Simar ([email protected])
Building blocks
• Authentication/Authorisation
– High level functionality: allows to authenticate a user and to
map the user against a (defined) class of user.
• e.g. domainX.NOC or domainX.end-user (among other possible).
– This will allow the user to get the data he is authorised to
access and/or to start tests based on its authorisation level.
• e.g. domainX.NOC can access any data and start test up to x Mbps ;
domainX.end-user can access a restricted set of information.
– Privileges negotiation between domains (I-OI #6).
Performance Monitoring - Internet2 Member Meeting -- Nicolas Simar ([email protected])
Working areas
– Tests/metric definition (I-OI #1).
– Domain interface. (I-OI #2, I-OI #3, I-OI #4, I-OI #5, I-OI
#6)
– Path finder (I-OI#4).
– Measurement protocol (I-OI #1, I-OI #3).
– User representation and statistics.
– Data storage, retrieval and analyses.
– Domain tool architecture.
– Domain tool implementation.
– Measurement box guidelines.
– Trial.
Performance Monitoring - Internet2 Member Meeting -- Nicolas Simar ([email protected])
Trial
– One-way type of tests (use of RIPE TTM boxes)
• cannot start a new test with RIPE TTM.
– GARR (Italy), GÉANT (European Backbone), HEANET
(Ireland) and SWITCH (Switzerland).
• GARR, SWITCH and HEANET already have some RIPE TTM
boxes. Three RIPE TTM boxes are being installed on GÉANT.
– Analyser module (v0.3) and interface not completely
implemented.
• Interface still requires some more specifications.
– Need to add a security section to the performance
monitoring activity.
Performance Monitoring - Internet2 Member Meeting -- Nicolas Simar ([email protected])
Future
GN2
• GN2 is the project name from which the GÉANT2
network will be built.
• In the GN2 proposal, the performance activity is
foreseen as being a Joint Research Activity -JRAbetween the Europeans NRENs and DANTE.
– GN2 starting Q3 2004
– For the performance monitoring JRA, the NREN have
committed to provide the equivalent of 10 full time
equivalent for the duration of the project - 4 years.
– budget for the deployment of around 30 boxes within
GÉANT and the NRENs.
Performance Monitoring - Internet2 Member Meeting -- Nicolas Simar ([email protected])
Future
2003
2004
2005
GÉANT y3 GÉANT y4
Internet2 PiPes
1. Internet2 activity
finished in Q2 2004,
GN2 starting in Q3
2004
??
2007
2. EGEE specifies interface in their month 9,
January 2005
3. GN2 specified at the same time
4. EGEE in pilot phase to use the interface in
April 2005
5. GN2 in pilot phase in 2006
GN2 y1
GN2 y2
3
EGEE y1 EGEE y2
1
2006
GN2 y3
5
24
Performance Monitoring - Internet2 Member Meeting -- Nicolas Simar ([email protected])
Information
• URLs
– http://www.dante.net/tf-ngn/perfmonit/
– http://chx400.switch.ch/mailman/listinfo/perfmonit
Performance Monitoring - Internet2 Member Meeting -- Nicolas Simar ([email protected])