A reordering-free multipath traffic engineering architecture for DiffServ-MPLS networks

Akar, Nail; Hökelek, İbrahim; Atik, M.; Karasan, Ezhan

doi:10.1109/ipom.2003.1251231

Cited by 4 publications

(16 citation statements)

References 12 publications

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“…This network topology and the traffic demand matrix is given in www.fictitious.org/omp and is also described in [1]. In our simulations, we scaled down the capacities of all links by a factor of 45/155 (OC-3 links with DS-3) to reduce the simulation runtimes.…”

Section: Numerical Resultsmentioning

confidence: 99%

“…In this paper, we study two queuing models based on the work in [1]. The first one is FIFO (first-in-first-out) queuing in which all the TCP data packets …”

Section: Architecturementioning

confidence: 99%

“…In order to mitigate this cascading effect, longer secondary paths should be resorted to only if primary paths can no longer accommodate additional traffic. Based on the work described in [1] and [2], we propose strict priority queuing in which TCP data packets routed over PPs use the silver service and those routed over SPs receive the bronze service.…”

Section: Architecturementioning

confidence: 99%

“…Recently, a new scalable flow-based multi-path traffic engineering approach for best-effort IP/MPLS networks is first proposed in [1] which employs maxmin fair bandwidth sharing using an explicit rate control mechanism. This work demonstrates the performance enhancements attained by the flow-based splitting approach using comparisons with packet-based (i.e., non-flow based) multi-path routing and single-path routing when streaming traffic (i.e., UDP) is used.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Combined Use of Prioritized AIMD and Flow-Based Traffic Splitting for Robust TCP Load Balancing

Alparslan

Akar

Karasan

2004

Quality of Service in the Emerging Networking Panorama

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Abstract. In this paper, we propose an AIMD-based TCP load balancing architecture in a backbone network where TCP flows are split between two explicitly routed paths, namely the primary and the secondary paths. We propose that primary paths have strict priority over the secondary paths with respect to packet forwarding and both paths are rate-controlled using ECN marking in the core and AIMD rate adjustment at the ingress nodes. We call this technique "prioritized AIMD". The buffers maintained at the ingress nodes for the two alternative paths help us predict the delay difference between the two paths which forms the basis for deciding on which path to forward a new-coming flow. We provide a simulation study for a large mesh network to demonstrate the efficiency of the proposed approach in terms of the average blocking rate and the average per-flow goodput.

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Section: Numerical Resultsmentioning

confidence: 99%

“…In this paper, we study two queuing models based on the work in [1]. The first one is FIFO (first-in-first-out) queuing in which all the TCP data packets …”

Section: Architecturementioning

confidence: 99%

Section: Architecturementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Combined Use of Prioritized AIMD and Flow-Based Traffic Splitting for Robust TCP Load Balancing

Alparslan

Akar

Karasan

2004

Quality of Service in the Emerging Networking Panorama

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“…A disadvantage of the reverse backup could be poor resource utilization as signals travel back to ingress router before onward transmission to the destination. Further failure of this path will also terminate packet transfer and also time is wasted in sending the reverse fault indication back to the ingress router (Akar et al, 2003;Bartos and Raman,2001)..…”

Section: Reverse Backupmentioning

confidence: 99%

Improvement Of Link Failure Restoration Utilising Multi-Protocol Label Switching (Mpls) As A Means To Maintain Quality Of Service (QOS)

Asante¹,

Sherratt²

2009

Jnl Sci Tech

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This paper proposes a practical approach to the enhancement of Quality of Service (QoS) routing by means of providing alternative or repair paths in the event of a breakage of a working path. The proposed scheme guarantees that every Protected Node (PN) is connected to a multirepair path such that no further failure or breakage of single or double repair paths can cause any simultaneous loss of connectivity between an ingress node and an egress node. Links to be protected in an MPLS network are predefined and a Label Switched path (LSP) request involves the establishment of a working path. The use of multi-protection paths permits the formation of numerous protection paths allowing greater flexibility. Our analysis examined several methods including single, double and multi-repair routes and the prioritization of signals along the protected paths to improve the Quality of Service (QoS), throughput, reduce the cost of the protection path placement, delay, congestion and collision. Results obtained indicated that creating multi-repair paths and prioritizing packets reduces delay and increases throughput in which case the delays at the ingress/egress LSPs were low compared to when the signals had not been classified. Therefore the proposed scheme provided a means to improve the QoS in path restoration in MPLS using available network resources. Prioritizing the packets in the data plane has revealed that the amount of traffic transmitted using a medium and low priority Label Switch Paths (LSPs) does not have any impact on the explicit rate of the high priority LSP in which case the problem of a knock-on effect is eliminated.

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AIMD-based online MPLS traffic engineering for TCP flows via distributed multi-path routing

2004

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With this paper, we propose a distributed online traffic engineering architecture for MPLS networks. In this architecture, a primary and secondary MP~ LSP are established from an ingress tsR to every other egress tSR. We propose to split the TcP traffic between the primary and secondary paths using a distributed mechanism based on ECN marking and alMo-based rate control. Inspired by the random early detection mechanism for active queue management, we propose a random early reroute scheme to adaptively control the delay difference between the primary and secondary tsPS. Considering the adverse effect of packet reordering on TCP performance for packet-based load balancing schemes, we propose that the TCP splitting mechanism operates on a per-flow basis. Using flow-based models developed for lnternet traffic and simulations, we show that flow-based distributed multi-path traffic engineering outperforms on a consistent basis the case of a single path in terms of per-flow goodputs. Due to the elimination of out-of-order packet arrivals, fow-based splitting also enhances TCP performance with respect to packet-based splitting especially for long 7"cP flOWS that are hit hard by packet reordering. We also compare and contrast two queuing architectures for differential treatment of data packets routed over primary and secondary Lses in the MPLS data plane, namely first-in-first-out and strict priority queuing. We show through simulations that strict priority queuing is more effective and relatively more robust with respect to the changes in the traffic demand matrix than first-in-first-out queuing in the context of distributed multi-path routing.

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A reordering-free multipath traffic engineering architecture for DiffServ-MPLS networks

Cited by 4 publications

References 12 publications

Combined Use of Prioritized AIMD and Flow-Based Traffic Splitting for Robust TCP Load Balancing

Combined Use of Prioritized AIMD and Flow-Based Traffic Splitting for Robust TCP Load Balancing

Improvement Of Link Failure Restoration Utilising Multi-Protocol Label Switching (Mpls) As A Means To Maintain Quality Of Service (QOS)

AIMD-based online MPLS traffic engineering for TCP flows via distributed multi-path routing

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