[routing-wg]Re: Modelling a large ISP network with C-BGP
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Hannes Gredler
hannes at juniper.net
Fri Feb 3 19:17:23 CET 2006
don't think so, unless you intend to pay for using it ;-) tx - /hannes Alain Hebert wrote: > I'm I alone to find this a bit spammy? > > Olivier Bonaventure wrote: > >> >> Dear All, >> >> C-BGP is an efficient and open-source simulation tool that allows to >> simulate the behavior of the intra- and interdomain routing protocols >> in large ISP networks. C-BGP is able to simulate networks with >> thousands of routers. A key feature ofco C-BGP compared to other >> simulators is that it is able to support the complex routing policies >> that are used by ISPs. >> >> Thanks to the support of France Telecom R&D, we have been able to use >> C-BGP to reproduce the behavior of BGP in a large Tier-1 ISP network. >> For this analysis, we have developped several tools to automatically >> convert the BGP configurations of Juniper (JUNOS) and Cisco (IOS) >> routers, the IGP topology and the BGP routes in the C-BGP format. With >> these tools, any network operator can easily build a C-BGP model of >> his/her network. With such a model, it is possible to perform >> different types of analysis on the ISP network, such as : >> >> - predicting the flow of the traffic through the network or >> determining the traffic matrix based on Netflow data (see article in >> January issue of ACM SIGCOMM Computer Communication Review) >> - predicting the impact of adding a new peering link on the BGP >> routes selected by the routers (see article in Nov/Dec issue of IEEE >> Network Magazine) >> - predicting the impact of link or router failures on the ISP network >> >> You can obtain C-BGP, the conversion tools and several papers >> describing the utilization of C-BGP to model an ISP network or compute >> traffic matrices from : >> >> http://cbgp.info.ucl.ac.be >> >> The website also contains several examples, such as a complete C-BGP >> model of the Abilene Network based on their publically available JUNOS >> configurations files. >> >> We believe that C-BGP could be very useful for ISPs willing to >> optimise the distribution and the selection of the BGP routes in their >> network. Comments, suggestions and questions from network operators >> are more than welcome. >> >> Best regards, >> >> >> >> Bruno Quoitin, Sebastien Tandel and Olivier Bonaventure >> >
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