Improved TCP performance over long-delay and error-prone links

West, Mark A.; McCann, S.

doi:10.1049/ic:20000095

Cited by 6 publications

(2 citation statements)

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“…This provides maximum security because there is no need for "trusted" nodes in the middle of the network that could be compromised and it simplifies the security architecture [3]. Ideally, it would also maintain a single, end-to-end TCP connection between the end hosts, which simplifies the transport of TCP segments end-to-end (a "split connection" between hosts is vulnerable to false status reporting, since assumptions must be made regarding the remote host [12]). …”

Section: Introductionmentioning

confidence: 99%

Approaches to using Performance Enhancing Proxies in the GIG Black Core

Molinari

Pezeshki

2007

MILCOM 2007 - IEEE Military Communications Conference

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It has long been understood that Transport Control Protocol (TCP) traffic performs poorly across satellite links. To overcome this performance challenge, SATCOM users have traditionally used Performance Enhancing Proxies (PEP) to "accelerate" TCP traffic.PEPs work by breaking the end-to-end TCP connection, running a different layer 4 protocol across the satellite link, and proxying the TCP connections with each end host. To do this, PEPs must be able to inspect and modify the entire IP packet, including the TCP segment header, to ensure proper handling ofTCP traffic over the link.The Department of Defense (DoD) is in the process of implementing the Global Information Grid (GIG), an Internet-like network for warfighters anywhere on Earth. Current plans callfor the GIG to transition to a "Black", or IP-encrypted, Core in the future [3]. Within the Black Core, IP packets will be completely encrypted, obscuring all information at layer 3 and above. Such an approach would render existing PEPs useless ifplaced in the Black Core. This is referred to in this paper as the Black Core problem.Many solutions have been proposed to the Black Core problem. Proposed solutions have included making changes to the network architecture, to the network protocols, or both. This paper expands upon the overview of PEP-based solutions presented in [4], and details several additional approaches. Additionally, this paper overviews the advantages and disadvantages for each method.

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Section: Introductionmentioning

confidence: 99%

Approaches to using Performance Enhancing Proxies in the GIG Black Core

Molinari

Pezeshki

2007

MILCOM 2007 - IEEE Military Communications Conference

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“…In these situations, flow control is still required for reliable data transport. Other proposals [10,11] use TCP Reno combined with TCP extensions to enhance the performance of TCP. However, most of these TCP extensions are unable to distinguish between packet losses due to congestion and transmission errors.…”

Section: Introductionmentioning

confidence: 99%

Cross‐layer enhancement of TCP split‐connections over satellites links

Peng

Leung

2006

Satell Commun Network

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Satellites have played an important role in global telecommunications. However, transmission control protocol (TCP) suffers performance degradations over satellite links due to the long propagation delay and high bit-error rate. Among methods proposed to alleviate the impact of satellite link characteristics on TCP performance, split TCP connections separated by performance enhancement proxies (PEPs) have been proven attractive because they can keep TCP configurations in the end systems unchanged. While many protocols applied over satellite links between PEPs can effectively mitigate the effect of high loss rates, the long latency still limits the effectiveness of congestion control in these protocols. To minimize the effect of congestion we propose to take advantage of active queue management at the medium access control layer to provide immediate cross-layer feedback to the TCP segment over satellite. This approach also achieves proper differentiation between packet losses due to channel errors and congestion. Simulation results show that our novel mechanism can give substantial improvements in TCP performance over satellite networks, compared to the best performing version of TCP with or without PEPs.

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Dynamic congestion control to improve performance of TCP split-connections over satellite links

Peng²,

Leung³

Proceedings. 13th International Conference on Computer Communications and Networks (IEEE Cat. No.04EX969)

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Improved TCP performance over long-delay and error-prone links

Cited by 6 publications

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Approaches to using Performance Enhancing Proxies in the GIG Black Core

Approaches to using Performance Enhancing Proxies in the GIG Black Core

Cross‐layer enhancement of TCP split‐connections over satellites links

Dynamic congestion control to improve performance of TCP split-connections over satellite links

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