1. Visible routers in Visible network
CORE University Program Seminar
Beppu City
February 2009
Shigeki Goto
Waseda University

2. Science makes everything visible.
Beppu Hell T-shirt

3. Cloud or stupid network
Old smart network
Modern stupid network

4. The router is actually smart!
routing and forwarding
routing prefix, prefix age, link bandwidth, available bandwidth, i/f queue, corruption loss, congestion loss, L2 address, signal strength, retransmission counter...
operation
uptime, location, temperature, time zone, i/f description, CPU load, operator’s contact....
MIB, PerfSONAR
by ikob, Dr Kobayashi

5. How to extract information
PTP: retrieve every hop’s data by single packet with header growth
SIRENS: one packet collects one router’s data, multiple packets
are required to retrieve whole path
© ikob, Dr Kobayashi

6. Visible route
© ikob, Dr Kobayashi

7. Application: P2P traffic engineering
heavy traffic with other AS numbers
BitTorrent
Traffic volume
Wei Yuan, Goto Lab.

8. Traffic engineering within an AS number Wei Yuan, Goto Lab.
Traffic volume
within an AS number
Wei Yuan, Goto Lab.

9. Related topic Open flow, flow based routing
hash table
routing table
flow data
A flow is a series of IP packets.
flow = <Protocol, IPa, PORTa, IPb, PORTb>

10. NetFPGA-1G Hardware Xilinx Virtex-2 Pro FPGA PCI Host Interface SRAM
DRAM
4 * Gigabit Ethernet ports

11. Open Flow Demo at SC 08

12. No buffer memory for flow routers
traditional routers: a parking lot model
queue
flow router： connection model, non-delay

13. Anagran FR-1000
Caspian Networks
NEC
NetFPGA

14. Summary Visible routers and switches are important
Application area — we need input from you
Flow based routing — future internet?

15. Summary Visible routers and switches are important
Application area — we need input from you
Flow based routing — future internet?
Enjoy your stay at Beppu!