[routing-wg]Re: Modelling a large ISP network with C-BGP
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Alain Hebert
ahebert at pubnix.net
Thu Feb 2 19:01:27 CET 2006
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 > -- Alain Hebert ahebert at pubnix.net PubNIX Inc. P.O. Box 175 Beaconsfield, Quebec H9W 5T7 tel 514-990-5911 http://www.pubnix.net fax 514-990-9443
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