North American Network Operators Group
Date Prev | Date Next |
Date Index |
Thread Index |
Author Index |
Historical
Re: Modelling a large ISP network with C-BGP
- From: Alain Hebert
- Date: Thu Feb 02 13:04:07 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 [email protected]
PubNIX Inc.
P.O. Box 175 Beaconsfield, Quebec H9W 5T7
tel 514-990-5911 http://www.pubnix.net fax 514-990-9443
|