Reference : BGP-aware IGP Link Weight Optimization in Presence of Route Reflectors
Scientific congresses and symposiums : Paper published in a book
Engineering, computing & technology : Computer science
http://hdl.handle.net/2268/5420
BGP-aware IGP Link Weight Optimization in Presence of Route Reflectors
English
Balon, Simon [Université de Liège - ULg > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Réseaux informatiques >]
Leduc, Guy mailto [Université de Liège - ULg > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Réseaux informatiques >]
Apr-2009
IEEE INFOCOM 2009
IEEE
Yes
No
International
IEEE INFOCOM 2009
20-24 April 2009
Rio de Janeiro
Brazil
[en] Traffic engineering ; BGP ; Route reflector
[en] The first generation of IGP Link Weight
Optimizers (LWOs) was based on presumably invariant
intra-domain traffic matrices only, ignoring the fact
that updating link weights had a side effect on these
traffic matrices due to hot-potato routing, thus result-
ing in suboptimal link weight settings, and sometimes
to very bad performance.
The second generation of IGP LWOs, referred to
as BGP-aware LWOs, has been able to optimize link
weights while taking hot-potato effects into account.
However, these tools relied on the complete visibility
assumption fulfilled by e.g. a full-mesh iBGP configu-
ration.
This paper proposes a third generation LWO, still
BGP-aware, but also able to work with iBGP con-
figurations based on route reflectors, which usually
hide some reachability information from routers. This
partial visibility may cause various problems, including
path deflections (i.e., the actual egress router is not the
expected one), which may in turn create forwarding
loops.
Our LWO embeds a BGP routing solver which can
always predict the actual egress router, even when
route reflectors are used. It can also forbid solutions
leading to path deflection. Its efficiency is evaluated on
a real dataset, and compared to other LWOs.
EU FP6 ANA
Researchers ; Professionals
http://hdl.handle.net/2268/5420

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