(How Much) Does a Private WAN Improve Cloud Performance?

Arnold, Todd W and Gurmericliler, Ege and Gupta, Arpit and Calder, Matt and Essig, Georgia and Giotsas, Vasileios and Katz-Bassett, Ethan (2020) (How Much) Does a Private WAN Improve Cloud Performance? In: IEEE International Conference on Computer Communications (INFOCOM) 2020. IEEE, CHN, pp. 79-88. ISBN 9781728164120

[img]
Text (cloud_infocom_2020)
cloud_infocom_2020.pdf - Accepted Version
Available under License Creative Commons Attribution-NonCommercial.

Download (2MB)

Abstract

The buildout of private Wide Area Networks (WANs) by cloud providers allows providers to extend their network to more locations and establish direct connectivity with end user Internet Service Providers (ISPs). Tenants of the cloud providers benefit from this proximity to users, which is supposed to provide improved performance by bypassing the public Internet. However, the performance impact of private WANs is not widely understood. To isolate the impact of a private WAN, we measure from globally distributed vantage points to a large cloud provider, comparing performance when using its worldwide WAN and when forcing traffic to instead use the public Internet. The benefits are not universal. While 40% of our vantage points saw improved performance when using the WAN, half of our vantage points did not see significant performance improvement, and 10% had better performance over the public Internet. We find that the benefits of the private WAN tend to improve with client-to-server distance, but that the benefits (or drawbacks) to a particular vantage point depend on specifics of its geographic and network connectivity.

Item Type:
Contribution in Book/Report/Proceedings
Additional Information:
©2020 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
ID Code:
139422
Deposited By:
Deposited On:
17 Dec 2019 11:40
Refereed?:
Yes
Published?:
Published
Last Modified:
28 Sep 2020 02:06