PortLand: A Scalable Fault-Tolerant Layer 2 Data Center Network Fabric
by Radhika Niranjan Mysore, Andreas Pamboris, Nathan Farrington, Nelson Huang, Pardis Miri, Sivasankar Radhakrishnan, Vikram Subramanya, Amin Vahdat
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| type: | misc | | url: | http://www.cs.cmu.edu/~srini/15-744/F09/papers/portland.pdf | | abstract: | This paper considers the requirements for a scalable, eas- ily manageable, fault-tolerant, and efficient data center net- work fabric. Trends in multi-core processors, end-host vir- tualization, and commodities of scale are pointing to future single-site data centers with millions of virtual end points. Existing layer 2 and layer 3 network protocols face some combination of limitations in such a setting: lack of scal- ability, difficult management, inflexible communication, or limited support for virtual machine migration. To some ex- tent, these limitations may be inherent for Ethernet/IP style protocols when trying to support arbitrary topologies. We observe that data center networks are often managed as a single logical network fabric with a known baseline topol- ogy and growth model. We leverage this observation in the design and implementation of PortLand, a scalable, fault tolerant layer 2 routing and forwarding protocol for data center environments. Through our implementation and eval- uation, we show that PortLand holds promise for supporting a “plug-and-play” large-scale, data center network. |
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