Skype supernode meltdown causes major outage

Skype engineers worked non-stop over several hours yesterday to fix the peer-to-peer IP telephony's site's worst outage.

Skype engineers worked non-stop over several hours yesterday to fix the peer-to-peer IP telephony's site's worst outage.

On its Twitter feed at 6am Skype said the service was gradually returning to normal. "We expect it may take several hours for everyone to be able to sign in again."

Skype blamed the problem on failure of its supernodes.

Supernodes are normal Skype clients on the internet that broker the communication between two Skype clients. Effectively, they act like a massive online telephone directory, which users' Skype clients use to look up other Skype users.

Any user can become a supernode, which should makes Skype resilient, but somehow the supernode infrastructure failed yesterday.

Writing on the Disruptive Telephony blog, Dan York, best practices chair of the voice over internet protocol (VOIP) security alliance (VOIPSA), said, "My guess would be that there might have been "cascading failures".

"If there was, say, a software update affecting some supernodes, as those supernodes dropped offline, the increased load of Skype clients trying to connect to online supernodes might have caused some of them to then drop offline. Or when a supernode came back online, it may have been overwhelmed by the quantity of connection requests and soon failed again."

Skpye last went offline in August 2007, following a Windows update.

CW+

Features

Enjoy the benefits of CW+ membership, learn more and join.

Read more on Voice networking and VoIP

0 comments

Oldest 

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to:

-ADS BY GOOGLE

SearchCIO

SearchSecurity

  • Dissecting the Hack

    In this excerpt from chapter three of Dissecting the Hack: The V3RB0TEN Network, authors Jayson E. Street, Kristin Sims and Brian...

  • Digital Identity Management

    In this excerpt of Digital Identity Management, authors Maryline Laurent and Samia Bousefrane discuss principles of biometrics ...

  • Becoming a Global Chief Security Executive Officer

    In this excerpt of Becoming a Global Chief Security Executive Officer: A How to Guide for Next Generation Security Leaders, ...

SearchNetworking

SearchDataCenter

SearchDataManagement

Close