08-16-2017, 10:44 PM
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Multiple Routing Configurations for Fast IP Network Recovery
Amund Kvalbein, Member, IEE, Audun Fosselie Hansen, Tarik Ci cic , Member, IEE,
Stein Gjessing, Member, IEE, and Olav Lysne, Member, IEE
Abstract
As the Internet takes an increasingly central role in our communications infrastructure, the slow convergence of routing protocols after a network failure becomes a growing problem. To assure fast recovery from page link and node failures in IP networks, we present a new recovery scheme called Multiple Routing Configurations (MRC). Our proposed scheme guarantees recovery in all single failure scenarios, using a single mechanism to handle both page link and node failures, and without knowing the root cause of the failure. MRC is strictly connectionless, and assumes only destination based hop-by-hop forwarding. MRC is based on keeping additional routing information in the routers, and allows packet forwarding to continue on an alternative output page link immediately after the detection of a failure. It can be implemented with only minor changes to existing solutions. In this paper we present MRC, and analyze its performance with respect to scalability, backup path lengths, and load distribution after a failure.We also show how an estimate of the traffic demands in the network can be used to improve the distribution of the recovered traffic, and thus reduce the chances of congestion when MRC is used.
the slow convergence of
routing protocols after a network failure becomes a growing
problem. a new recovery scheme called Multiple
Routing Configurations (MRC) is presented in this article To assure fast recovery from page link and node failures in
IP networks. MRC is strictly connectionless, and
assumes only destination based hop-by-hop forwarding and it is
based on keeping additional routing information in the routers,
and allows packet forwarding to continue on an alternative
output page link immediately after the detection of a failure.
INTRODUCTION:
IP networks are intrinsically
robust, since IGP routing protocols like OSPF are designed
to update the forwarding information based on the changed
topology after a failure. IP networks are intrinsically
robust, since IGP routing protocols like OSPF are designed
to update the forwarding information based on the changed
topology after a failure. Much effort has been devoted to optimizing the different
steps of the convergence of IP routing like detection, dissemination
of information and shortest path calculation.
The Multiple Routing Configurations (MRC) is a
proactive and local protection mechanism that allows recovery
in the range of milliseconds.. MRC allows packet forwarding
to continue over pre-configured alternative next-hops immediately
after the detection of the failure.The main idea of MRC is to use the network graph and
the associated page link weights to produce
a set of backup
network configurations.
Reference: http://seminarsprojects.net/Thread-multi...z11YNZ4R7f
for more please visit:-
http://seminarsprojects.net/Thread-multi...k-recovery
http://seminarsprojects.net/Thread-multi...3#pid24813