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Analysts Blame Skype for Massive VOIP Outage
2007-08-22
This much we know: Skype's two-day outage was triggered after its peer-to-peer network became disrupted following a massive restart of its users' computers as they rebooted after receiving a routine set of patches through Windows Update.
The blitzkrieg of restarts caused a flood of log-in requests, which led to a global bog down in service. In the course of the outage, Skype engineers discovered a software bug within the network resource allocation algorithm that prevented the service from righting itself.
So, is it Skype's fault or are the routine Microsoft Windows Update patches to blame? VOIP (voice over IP) experts believe Microsoft can't be blamed because service providers are supposed to be prepared for the regular updates the software power automatically deploys.
IDC analyst Rebecca Swensen said the fault was only indirectly related to the Microsoft updates.
"It basically had to do with a bug in Skype's P2P network algorithms," Swensen said. "They hadn't found the bug in their code until this huge Microsoft update. The way that Skype built their network they relied heavily on these super nodes [clients] and because so many of them went down, that put a lot of strain on the network. Usually, they have a failover, which would allow their servers to pick up the slack, so I guess that's where the bug was."
By Clint Boulton
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