The document discusses a hybrid packets-and-circuits switching logic developed by Marat Zhanikeev, focusing on performance metrics such as overhead, traffic handling, and circuit management. It includes experimental setups utilizing high-speed rates and synthetic switching logic to evaluate packet and circuit performance. The findings suggest potential advantages in managing bulk and big data transfers in modern networks.

1. Switching Logic
Marat Zhanikeev
maratishe@gmail.com
maratishe.github.io
2016/04/22@CS研＠IEICE
On a Hybrid
PDF: bit.do/160422
Packets-and-Circuits
#packets #circuits
#virtualization #cdn
#cutthrough
#bulktransfer #bigdata
#hotspots

2. .
Future NOC
NOC
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3. .
Per-Packet Processing Logic
C: Cut Through
Check,
etc. Q: Queue
D: Drop
QoS
classes
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4. .
Overhead in P/C Contexts
Line=
outgoing
port
Overhead =
contention
No. of flows
Line=
outgoing
port
Overhead
Scheduling
Traditional
Circuits
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5. .
Hotspot Traffic
.
Hotspots
..
....is a random variable distribution model
0 10 20 30 40 50
List of traffic sources
0
0.4
0.8
1.2
1.6
2
2.4
2.8
log(trafficvolume)
0 10 20 30 40 50
List of traffic sources
0
0.4
0.8
1.2
1.6
2
2.4
2.8
log(trafficvolume)
Magnitude=2 Magnitude=10
Hotspots
Normal
Hotspot
under
a Flash
event
• normal, popular, and hot/flash sets
• many uses: CDN, packet flows, Amazon
online shop, etc.
• hot/flash items in traffic is known as
bulk/bigdata transfer
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6. .
Tall Gates for Bulk Transfer
Tall Gates
Bulks
Send
Highway
Sources
Destination
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7. .
Experiments
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8. .
Setup
• a randomly downloaded trace from WIDE
• 1Gbps+ rates
• replay in accordance with real timestamps but create synthetic switching logic
◦ number of packets vs circuit lines
◦ complex selection logic (see paper)
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9. .
Example Outcome
• 1: only Packets, 2: with Circuits
0 30 60 90 120 150
Average rate (Mbps)
Packets 1 (packets)
Loss 1 (packets)
Packets 2 (circuits)
Circuits
Loss 2 (circuits)
channels#5(2 circuits for 20 top flows)
0 200 400 600 800
Time sequence
0
60
120
180
240
300
Rate(Mbps)
Loss
Circuits
Loss with circuits
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10. .
The Spectrum of Performance
0 20 40 60 80 100 120 140 160
Data rate (Mbps)
0
20
40
60
80
100
120
140
160
Loss(Mbps)
Packets (traditional)Packets (proposed)Circuits (proposed)
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11. .
That’s all, thank you ...
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12. .
SuperDuperSwitch vs....
Super - duper
32- port
Software Switch
( ClickOS , SDN, NFV,...)
Simple
4- port
Simple
4- port
Simple
4- port
Simple
4- port
Simple
4- port
Simple
4- port
Simple
4- port
Simple
4- port
vs
>cost
capacity <
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