Just before 2PM today a number of TalkTalk circuits dropped out, it looks like they have all now come back on line. We are investigation this with TalkTalk
TT are investigating further but initial response from them "nothing is presenting me with an obvious answer other than what appears to have been a connectivity problem to HEX" Update to follow
Update from TT. Summary Network monitoring has identified that Wholesale Business customers across the country may have experienced a brief loss of service between 14:00 and 14:05. Network Monitoring completed by our NOC has identified that there was a drop of traffic at these times between a Network Core Router at the Brentford Data Centre (NCR002.BRE) and a Redback router (LTS001.HEX). This subsequently caused Wholesale Business customers who route through Harbour exchange to experience a loss of service.
Technical / Suspected Root Cause Investigations by our Network Support have identified that this issue occurred due to planned LTS work under SR8753. This work caused the queues on the LTS to fill up and caused a CPU spike, which in turn caused the tunnels to drop. There are plans to increase circuit capacity going forward to ease bandwidth levels and prevent a repeat of this issue.