On improving the efficiency and manageability of NotVia

This paper presents techniques that improve the efficiency and manageability of an IP Fast Reroute (IPFRR) technology: NotVia. NotVia provides the IPFRR service for all destinations in an ISP's network upon any single link or node failure, while previous proposals such as Loop-free Alternates (LFA) can not guarantee this level of coverage. However, NotVia increases the computational and memory costs of the IPFRR service, and poses new challenges to network management, as routers are unaware of the links and nodes (hence the amount of traffic) that they actually protect. This paper introduces three techniques: NotVia aggregation, prioritized NotVia computation, and the rNotVia algorithm that collectively reduce the overhead of NotVia and improve its manageability. We use simulations to evaluate these techniques on real ISP topologies as well as on randomly generated topologies. The results show that the computational and memory overhead of NotVia are reduced to a fraction of their previous values on various topologies, suggesting that the techniques proposed in this paper make NotVia a more efficient and easy-to-manage IPFRR solution.

[1]  Mikkel Thorup,et al.  Internet traffic engineering by optimizing OSPF weights , 2000, Proceedings IEEE INFOCOM 2000. Conference on Computer Communications. Nineteenth Annual Joint Conference of the IEEE Computer and Communications Societies (Cat. No.00CH37064).

[2]  Olivier Bonaventure,et al.  Achieving sub-second IGP convergence in large IP networks , 2005, CCRV.

[3]  Stewart Bryant,et al.  IP Fast Reroute Using Not-via Addresses , 2006 .

[4]  Olivier Bonaventure,et al.  An evaluation of IP-based fast reroute techniques , 2005, CoNEXT '05.

[5]  Ravindra K. Ahuja,et al.  Network Flows: Theory, Algorithms, and Applications , 1993 .

[6]  Mung Chiang,et al.  Towards Robust Multi-Layer Traffic Engineering: Optimization of Congestion Control and Routing , 2007, IEEE Journal on Selected Areas in Communications.

[7]  Anja Feldmann,et al.  REPLEX: dynamic traffic engineering based on wardrop routing policies , 2006, CoNEXT '06.

[8]  Hannes Gredler,et al.  The complete IS-IS routing protocol , 2005 .

[9]  Olivier Bonaventure,et al.  Avoiding transient loops during IGP convergence in IP networks , 2005, Proceedings IEEE 24th Annual Joint Conference of the IEEE Computer and Communications Societies..

[10]  Scott Shenker,et al.  Achieving convergence-free routing using failure-carrying packets , 2007, SIGCOMM '07.

[11]  Chen-Nee Chuah,et al.  Fast Local Rerouting for Handling Transient Link Failures , 2007, IEEE/ACM Transactions on Networking.

[12]  Keith McCloghrie,et al.  Structure and identification of management information for TCP/IP-based internets , 1988, RFC.

[13]  Keith McCloghrie,et al.  Structure and identification of management information for TCP/IP-based internets , 1988, RFC.

[14]  Alia Atlas,et al.  Basic Specification for IP Fast Reroute: Loop-Free Alternates , 2008, RFC.

[15]  Wenyu Jiang,et al.  Comparison and optimization of packet loss repair methods on VoIP perceived quality under bursty loss , 2002, NOSSDAV '02.

[16]  Ibrahim Matta,et al.  BRITE: an approach to universal topology generation , 2001, MASCOTS 2001, Proceedings Ninth International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication Systems.

[17]  Alia Atlas,et al.  U-turn Alternates for IP/LDP Fast-Reroute , 2006 .

[18]  Nick Feamster,et al.  Packet Loss Recovery for Streaming Video , 2002 .

[19]  Dave Katz,et al.  Traffic Engineering (TE) Extensions to OSPF Version 2 , 2003, RFC.

[20]  Chen-Nee Chuah,et al.  Feasibility of IP restoration in a tier 1 backbone , 2004, IEEE Network.

[21]  Roch Guérin,et al.  Achieving near-optimal traffic engineering solutions for current OSPF/IS-IS networks , 2005, IEEE/ACM Transactions on Networking.

[22]  Minas Gjoka,et al.  Evaluation of IP Fast Reroute Proposals , 2007, 2007 2nd International Conference on Communication Systems Software and Middleware.

[23]  Piotr Cholda,et al.  Network Recovery, Protection and Restoration of Optical, SONET-SDH, IP, and MPLS [Book Review] , 2005, IEEE Communications Magazine.

[24]  Stewart Bryant,et al.  IP Fast Reroute using tunnels , 2007 .

[25]  Alex Zinin.  Analysis and Minimization of Microloops in Link-state Routing Protocols , 2005 .

[26]  Stein Gjessing,et al.  Fast IP Network Recovery Using Multiple Routing Configurations , 2006, Proceedings IEEE INFOCOM 2006. 25TH IEEE International Conference on Computer Communications.

[27]  DiotChristophe,et al.  Achieving near-optimal traffic engineering solutions for current OSPF/IS-IS networks , 2005 .

[28]  Piet Demeester,et al.  Network Recovery: Protection and Restoration of Optical, SONET-SDH, IP, and MPLS , 2004 .