Routing across wired and wireless mesh networks Experimental compound internetworking with OSPF Juan Antonio Cordero Matthias Philipp Emmanuel Ba INRIA Saclay – Île-de-France (France) 8 th International Wireless Communications and Mobile Computing Conference Limassol (Cyprus), August 27-31, 2012
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Routing across wired and wireless mesh networks Experimental compound internetworking with OSPF Juan Antonio CorderoMatthias PhilippEmmanuel Baccelli INRIA.
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Routing across wired and wireless mesh networks
Experimental compound internetworking with OSPF
Juan Antonio Cordero Matthias Philipp Emmanuel Baccelli
INRIA Saclay – Île-de-France (France)
8th International Wireless Communications and Mobile Computing Conference
Limassol (Cyprus), August 27-31, 2012
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Agenda
Motivation: compound internetworks in the Internet core
Introduction to OSPF
Our contribution: objectives and experiments
The testbed
Data plane results
Control plane results
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‘Compound’ internetworks in the Internet
Set of interconnected wireless and wired networks in a single domain
Autonomous System
Rest of the Internet
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‘Compound’ internetworks in the Internet
Set of interconnected wireless and wired networks in a single domain
Compound Autonomous System
Rest of the Internet
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OSPF basic operation
What is OSPF ?
“Open Shortest Path First”
Link-state routing protocol
Main Interior Gateway Protocol (IGP) used in Internet routing
How does it work ?
Interface types
(Supported networks) Point-to-point Broadcast
MANET-like
Packet types
Neighbor sensing : Hellos
Topology flooding : LS-Updates , LS-Acks
Database sychronization : LS-Reqs , DB Description
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Contribution : Objectives and Experiments
Experimental evaluation in a compound internetworking testbed (layer 3 perspective) Confirm/dismiss underlying assumptions on previous research
On the data plane : UDP flows and pings
On the control plane : OSPF control traffic structure
Extension of OSPF for operation in compound internetworks
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Wired/wireless static internetwork, 6 computers
MAC layer : 802.3 Ethernet (wired)802.11b WLAN (wireless)