Dec 15, 2017

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PLUG: Flexible Lookup Modules for Rapid Deployment of New Protocols in High-speed Routers

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Lorenzo De Carli, Yi Pan, Amit Kumar, Cristian Estan, and Karthikeyan Sankaralingam. PLUG: Flexible Lookup Modules for Rapid Deployment of New Protocols in High-speed Routers. In SIGCOMM '09, 2009.

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Abstract

New protocols for the data link and network layer are being proposedto address limitations of current protocols in terms of scalability,security, and manageability. High-speed routers and switches thatimplement these protocols traditionally perform packetprocessing using ASICs which offer high speed, low chip area, and lowpower. But with inflexible custom hardware, the deployment of newprotocols could happen only through equipment upgrades. While newerrouters use more flexible network processors for data planeprocessing, due to power and area constraints lookups in forwardingtables are done with custom lookup modules. Thus most of the proposedprotocols can only be deployed with equipment upgrades.To speed up the deployment of new protocols, we propose a flexiblelookup module, PLUG (Pipelined Lookup Grid). We can achieve generalitywithout loosing efficiency because various custom lookup modules havethe same fundamental features we retain: area dominated by memories,simple processing, and strict access patterns defined by the datastructure. We implemented IPv4, Ethernet, Ethane, and SEATTLE in ourdataflow-based programming model for the PLUG and mapped them to thePLUG hardware which consists of a grid of tiles. Throughput, area,power, and latency of PLUGs are close to those of specialized lookupmodules.

BibTeX

 @inproceedings{sigcomm09:plug,
   author={Lorenzo De Carli and Yi Pan and Amit Kumar and Cristian Estan and Karthikeyan Sankaralingam},
   title={PLUG: Flexible Lookup Modules for Rapid Deployment of New Protocols in High-speed Routers},
   booktitle="{SIGCOMM '09}",
   year={2009},
   abstract = {
 New protocols for the data link and network layer are being proposed
 to address limitations of current protocols in terms of scalability,
 security, and manageability. High-speed routers and switches that
 implement these protocols traditionally perform packet
 processing using ASICs which offer high speed, low chip area, and low
 power. But with inflexible custom hardware, the deployment of new
 protocols could happen only through equipment upgrades. While newer
 routers use more flexible network processors for data plane
 processing, due to power and area constraints lookups in forwarding
 tables are done with custom lookup modules. Thus most of the proposed
 protocols can only be deployed with equipment upgrades.
 To speed up the deployment of new protocols, we propose a flexible
 lookup module, PLUG (Pipelined Lookup Grid). We can achieve generality
 without loosing efficiency because various custom lookup modules have
 the same fundamental features we retain: area dominated by memories,
 simple processing, and strict access patterns defined by the data
 structure. We implemented IPv4, Ethernet, Ethane, and SEATTLE in our
 dataflow-based programming model for the PLUG and mapped them to the
 PLUG hardware which consists of a grid of tiles. Throughput, area,
 power, and latency of PLUGs are close to those of specialized lookup
 modules.
 },
   bib_dl_pdf = {http://www.cs.wisc.edu/vertical/papers/2009/sigcomm09-plug.pdf},
   bib_dl_ppt = {http://www.cs.wisc.edu/vertical/talks/2009/sigcomm09-plug.pdf},
   bib_pubtype = {Refereed Conference},
   bib_rescat = {Architecture}
 }

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