Transcript Thoughts on Networking Research Bob Kinicki PEDS Presentation October 6, 2003 Networking Research Major Internet Issues • • • • • • Growth Applications and Quality of Service Open versus Security {in conflict!!} Wireless Mobile Future Architectures Networking.

Thoughts on Networking
Research
Bob Kinicki
PEDS Presentation
October 6, 2003
Networking Research
1
Major Internet Issues
•
•
•
•
•
•
Growth
Applications and Quality of Service
Open versus Security {in conflict!!}
Wireless
Mobile
Future Architectures
Networking Research
2
Growth
• What will cause Internet growth?
• How will wired and wireless integrate?
• How much congestion will this produce
within the Internet?
• Where will the bottleneck be?
• Can we predict the growth?
• Requires measurement!
Networking Research
3
T
X
Z
W1
W
Video
Y
Host
L
Host
M
Host
A
2
3
5
nodes
16
14
11
Host
C
15
6
13
10
Web Server
W4
17
12
Host
D
W3
AP
4
1
Host
B
W2
Host
K
Host
H
7
9
Host
E
Peer –to-Peer
8
Host
G
Host
F
Networking Research
4
Congestion Control Research
• Modifying TCP
• Making non-TCP traffic TCP-Friendly
• New congestion control algorithms at the
router
– ECN (Explicit Congestion Notification)
– Jae Chung: new congestion control algorithm
– Min Kim: TCP source hint for fairness to Web
traffic
– XCP, PI, AVQ,SFC, REM, …
Networking Research
5
Congestion Control Research
• Will over-provisioning remain viable?
• Will pricing force class-based traffic
routing?
Networking Research
6
Quality of Service
• Balance needs of different applications
– Abhishek Kumar: delay versus throughput
balancing
• Aggregating flows at the ingress router
Networking Research
7
Applications
• Streaming Media
– Using FEC (Forward Error Correction)
• Huahui: Using FEC with temporal and quality scaling
– TFRC (TCP Friendly Rate Control)
• Mingzhe’s current project
– Using Partial Retransmissions
• Yubing’: retransmissions related to RTTs
– Measurement
• Available Video - Mingzhe paper
• Media Server - Jim Nichol’s masters
Networking Research
8
T
X
Z
W1
W
Video
Y
Host
L
Host
M
Host
A
2
3
5
nodes
16
14
11
Host
C
15
6
13
10
Web Server
W4
17
12
Host
D
W3
AP
4
1
Host
B
W2
Host
K
Host
H
7
9
Host
E
Peer –to-Peer
8
Host
G
Host
F
Networking Research
9
Applications
• Web Traffic
– Many possibilities here , e.g. Prof. Wills, Mikhail,
and Hao
– What is the future of flash crowds?
• Peer to Peer Traffic
– Impact ?
– New research area for PEDS
• Overlays to handle multicast
– Overlays to combat denial of service attacks
Networking Research
10
Open Networks and Security
Networks in Conflict
• Acceptable security depends on context
and circumstances
• Where should the security be positioned?
– Ingress versus egress?
– Outside the perimeter  Not at the firewall!
– Upstream within core routers
• Wireless changes everything
Networking Research
11
Security Problems
• DOS and DDOS (Distributed Denial of
Service.
• Wormholes
• Flash crowds versus DDOS
• Intrusion Detection schemes
Networking Research
12
T
X
Z
W1
W
Video
Y
Host
L
Host
M
Host
A
2
3
5
nodes
16
14
11
Host
C
15
6
13
10
Web Server
W4
17
12
Host
D
W3
AP
4
1
Host
B
W2
Host
K
Host
H
7
9
Host
E
Peer –to-Peer
8
Host
G
Host
F
Networking Research
13
Wireless
• Hot Area!!!
• Handling packet loss due to errors in
communication
– “Fu Fighter” research
• Hidden terminal problems
• Streaming over Wireless
Networking Research
14
Mobile
• When wireless nodes move around they
become routers
• Need new MANETs with special
algorithms that included router
communicaitons
– No students currently working here!!
– Military need secure MANET technology 
this will happen
Networking Research
15
Future Architectures
• Mobile Wireless addressing issues
• IPv6
– Other countries moving ahead here
• Internet2
– WPI is part of Internet2
– Unheard of capacity
Networking Research
16
Final Remarks
• Plenty of research opportunity for new
PEDS students
• Master Students need to begin to focus
in fall so that you can pick a topic by the
end of the first year
• At least six choices from PEDS faculty
for research advisor
Networking Research
17