Presentation on theme: "Floating Cloud Tiered Internet Architecture Current: Rochester Institute of Technology, Rensselaer Polytechnic Institute, University of Nevada, Reno Level."— Presentation transcript:
Floating Cloud Tiered Internet Architecture Current: Rochester Institute of Technology, Rensselaer Polytechnic Institute, University of Nevada, Reno Level 3 Merit Networks
The Floating-Cloud Tiered Architecture Cloud is an autonomous entity of definable granularity – An ISP – A PoP in an ISP – An AS Tiered structure as used in ISPs – Clouds can float and attach to any other cloud at any tier – policies and agreements permitting 2
Floating-Cloud Tiered Internet Tier 1 Tier 2 Tier 3 1.1 1.2 2.1:1 2.2:1 3.2:1:1 2.1:2 3 Based on addressing scheme, each cloud has a (multiple) cloud IDs. Internal address/ structure is not affected. Routing within the cloud Clouds can move up, down, sideways and attach to multiple clouds at different tiers
Experiment set up Implement floating cloud tiered architecture on a large scale network without being encumbered by layer 3 or routing protocols. Three options – Implement using MPLS. Requires manually setting up MPLS, (current router implementations) – To use our in-lab developed software, which is a hack into Linux Kernel – user space. Require running Linux OS in several systems to run our software. Still require layer 2 Ethernet interfaces and encapsulating out packets in Ethernet header, as receiving systems are not able to receive our raw data packets – Linux implementations of MPLS
Experiment studies Run experiments in parallel with a similar network running IPv6 or IPv4 Study – Routing traffic – Routing table sizes – Convergence times to changes – Speed in end–to-end data transfer – Some optimizations studies in manipulating the number of links between clouds and study load balancing – Understand the performance improvements due to tiers. – OOO switching?
Experiment studies Modification to MPLS to make it perform the functions that we require. – doable on the test bed? – Can we do away with MAC addresses? Long term – we would also like to study the impact of BGP policies (Level 3) – Tiered addresses within a cloud?
Use of GENI Emulab test systems – Start with 20 nodes – Increase size – Integrate RIT test network – Involve Merit Networks test bed? ProtoGENI – Traffic shaping – latency studies – Geographically distributed experiments
Flexibile Addressing Scheme Tier fieldLength field Address field 6 bits2 bits4- 12 bits 6 bits – 64 tiers 01 10 11 00 Special handling 4 bits 16 systems 8 bits 256 systems 12 bits 4096 systems Length field 13 Address field Based on the tier value, number of addresses change
Flexibility in Addressing Scheme Faster forwarding between tiers – Switch on tier field – UP, DOWN, Same level –Mesh as required and route Distribute routing load to within tiers Address length depends on tier level – (no fixed size) Addresses will never run out 00 - Special addressing – wireless networks, roaming user Flexibility – nested addressing 14
Options for testing Use systems available with Emulab – Install Linux OS – Run the current software on the systems – Set up topology?? – Connections between systems?? (Ethernet interfaces)
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