ne x tworking’03 june 23-25,2003, chania, crete, greece the first cost-ist(eu)-nsf(usa) workshop...
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NeXtworking’03 June 23-25,2003, Chania, Crete, GreeceThe First COST-IST(EU)-NSF(USA) Workshop on EXCHANGES & TRENDS IN NETWORKING
Challenges and issues in Measurement research
Christophe [email protected]
NeXtworking’03 June 23-25,2003, Chania, Crete, GreeceThe First COST-IST(EU)-NSF(USA) Workshop on EXCHANGES & TRENDS IN NETWORKING
Why monitoring
• Monitoring should be the first step after a system has been designed– Assess performance– Control, manage, improve, engineer
• Any system should be designed with monitoring capabilities– Instead, the internet is a big black box that
seem to work well (but don’t look too close)
NeXtworking’03 June 23-25,2003, Chania, Crete, GreeceThe First COST-IST(EU)-NSF(USA) Workshop on EXCHANGES & TRENDS IN NETWORKING
Why monitoring
• Did God monitored Adam before designing Eve ?(clearly not if God was an Internet engineer)
• Make a system operational, then monitor it is like putting the cart before the horse.
NeXtworking’03 June 23-25,2003, Chania, Crete, GreeceThe First COST-IST(EU)-NSF(USA) Workshop on EXCHANGES & TRENDS IN NETWORKING
What needs to be monitored
• Managing a network based on SNMP data is like looking at the finger that points the moon
• Every possible data might be useful at some given point in time– Need to merge information– We don’t know yet what is exactly
needed
NeXtworking’03 June 23-25,2003, Chania, Crete, GreeceThe First COST-IST(EU)-NSF(USA) Workshop on EXCHANGES & TRENDS IN NETWORKING
Illustration
NeXtworking’03 June 23-25,2003, Chania, Crete, GreeceThe First COST-IST(EU)-NSF(USA) Workshop on EXCHANGES & TRENDS IN NETWORKING
A two tier monitoring system
RoutingTable
RoutingTableMemory
Monitoredlink
to networkStore &Forward
from network
Compute& export
Queries
NeXtworking’03 June 23-25,2003, Chania, Crete, GreeceThe First COST-IST(EU)-NSF(USA) Workshop on EXCHANGES & TRENDS IN NETWORKING
A two tier monitoring system
RoutingTableMemory
Monitoredlink
to networkStore &Forward
from network
Compute& export
Queries
Tier 1(permanent)
NeXtworking’03 June 23-25,2003, Chania, Crete, GreeceThe First COST-IST(EU)-NSF(USA) Workshop on EXCHANGES & TRENDS IN NETWORKING
A two tier monitoring system
RoutingTableMemory
Monitoredlink
to networkStore &Forward
from network
Compute& export
Queries
Tier 2(on-demand)
NeXtworking’03 June 23-25,2003, Chania, Crete, GreeceThe First COST-IST(EU)-NSF(USA) Workshop on EXCHANGES & TRENDS IN NETWORKING
Sprint CMON architecture
OC
3/1
2/4
8/1
92
OC
3/1
2/4
8/1
92
DAG DAG CardCardDAG DAG CardCard
MemoryMemory
PacketPacketHeadersHeaders
FlowFlowTableTable
Statistics &Statistics &CountersCounters
Disk ArrayDisk Array
CompressedCompressedPacket Packet TraceTrace
NIC to/from network
CPUCPU
Flow Classification
Engine
Packet TraceEncoding
ExportModule
ControlModule
StatisticsModule
NeXtworking’03 June 23-25,2003, Chania, Crete, GreeceThe First COST-IST(EU)-NSF(USA) Workshop on EXCHANGES & TRENDS IN NETWORKING
Related research problems
• Performance (10Gbps and more)
• Location (where to deploy)
• Control plane (Incl. Queries)
• Relevant metrics
• DoS
• Active monitoring
• Sampling
NeXtworking’03 June 23-25,2003, Chania, Crete, GreeceThe First COST-IST(EU)-NSF(USA) Workshop on EXCHANGES & TRENDS IN NETWORKING
Enablers
• Publicly available data– ISPs, Universities, etc.– free equipment to encourage monitoring– NSF, EU MUST push.
• Multidisciplinary projects
• Academic and industry research work together