Following Friday’s widespread blackout of asymmetric digital subscriber line (ADSL) broadband in South Africa, Telkom has explained the problem was caused by routine maintenance gone wrong.

“On Friday, 7 June, at 3.30pm, Telkom performed scheduled planned maintenance work to add new IP (Internet protocol) addresses to the ADSL network,” a company spokesman explains.

“The type of planned maintenance undertaken was classified as non-invasive, low risk and a very mature process routinely used to add new IP addresses to the network,” the spokesman says. “Unfortunately, a problem occurred immediately after commencing the planned maintenance and this resulted in all live ADSL sessions being ‘reset’, commencing approximately 3.49pm.

“ADSL users would be accustomed to a modem or session resets taking on average two minutes. However, the high number of simultaneous reset attempts due to the problem put a significant load on authentication servers and thus the resets took longer than normal and were experienced by customers as downtime.

Sunday, June 9, 2013

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