Optimized IP-based vs. explicit paths for one-to-one backup in MPLS fast reroute
Författare
Summary, in English
Primary and backup paths in MPLS fast reroute
(FRR) may be established as shortest paths according to the
administrative link costs of the IP control plane, or as explicitly
calculated arbitrary paths. In both cases, the path layout can
be optimized so that the maximum link utilization for a set
of considered failure scenarios is minimized. In this paper, we
propose a linear program for the optimization of the path layout
for explicitly calculated paths, which can either produce single
paths and route entire traffic along those paths, or generate
multiple paths and spread the traffic among those paths providing
load balancing. We compare the resulting lowest maximum link
utilization in both cases with the lowest maximum link utilization
that can be obtained by optimizing unique IP-based paths. Our
results quantify the gain in resource efficiency usage provided
by optimized explicit multiple paths or explicit single paths as
compared to optimized IP-based paths.
(FRR) may be established as shortest paths according to the
administrative link costs of the IP control plane, or as explicitly
calculated arbitrary paths. In both cases, the path layout can
be optimized so that the maximum link utilization for a set
of considered failure scenarios is minimized. In this paper, we
propose a linear program for the optimization of the path layout
for explicitly calculated paths, which can either produce single
paths and route entire traffic along those paths, or generate
multiple paths and spread the traffic among those paths providing
load balancing. We compare the resulting lowest maximum link
utilization in both cases with the lowest maximum link utilization
that can be obtained by optimizing unique IP-based paths. Our
results quantify the gain in resource efficiency usage provided
by optimized explicit multiple paths or explicit single paths as
compared to optimized IP-based paths.
Avdelning/ar
Publiceringsår
2010
Språk
Engelska
Länkar
Dokumenttyp
Konferensbidrag
Ämne
- Electrical Engineering, Electronic Engineering, Information Engineering
Conference name
14th International Telecommunications Network Strategy and Planning Symposium NETWORKS 2010
Conference date
2010-09-27 - 2010-09-30
Conference place
Warsaw, Poland
Status
Published
Forskningsgrupp
- Networking