Due to Cogent maintenance taking place overnight tonight, we have temporarily shutdown our connectivity via Cogent. As their maintenance can’t reliably shutdown the connections in a clean fashion, we have done this from our side prior to the maintenance starting. We will restore the Cogent connectivity tomorrow once all maintenance… Continue reading
We have been informed of a planned maintenance window by one of our IP Transit partners, Cogent Communications. This maintenance period is 12th July 2015 from 1:00am to 7:00am UK local time. We will remove Cogent from our connectivity for the entire duration of the maintenance window to prevent any… Continue reading
British Telecom have informed us today of a period of emergency planned maintenance on 8th July 2015 starting at 2:00am UK local time lasting for up to 1 hour 30 minutes – this work is to re-route our fibre optic cabling between Manchester and Bolton due to works on the… Continue reading
At 10:31am this morning, we noticed one of our metro network interconnects between Bolton and Manchester, provided by Virgin Media, flapped. We have reported the fault to Virgin Media and are awaiting their investigation. Our network runs via a redundant ring of interconnects from multiple vendors and any traffic… Continue reading
We have received reports of some unusual packet loss to certain destinations since 2:10am this morning. We have conducted testing within our network to confirm that the issue lies outside of our network infrastructure. As a result, we have raised the issue with our global connectivity providers to investigate further.
Our monitoring systems alerted us to IPv4 connectivity issues at 6:32pm this evening. This was traced to our connection with Level3, Inc. It appears to have stopped passing IPv4 traffic due to a routing loop internally within Level3’s network. We have shutdown our connectivity with them and raised a trouble… Continue reading
Netnorth have recently established additional DNS fabric in Hemel Hempstead, providing further resilience to our hosted services. We now operate various networked DNS servers deployed across 5 distinct geo-locations: LON1 – London MAN1 – Manchester BOL1 – Bolton BOL2 – Bolton HEM1 – Hemel Hempstead All of Netnorth’s DNS servers… Continue reading
Continuing from http://status.netnorth.net/2015/05/06/us-based-connectivity-issue/ We just started to receive monitoring reports showing the same level of packet loss as received earlier this morning. We have removed the Level3 connectivity from our network immediately forcing re-routing of traffic. We will contact Level3 for more information.
We have received reports this morning of network alerts from 3rd party providers indicating trouble reaching the Netnorth network. After further investigation, we narrowed the issue to part of the Level3 network (traceroutes included below) located in the US – we raised this with Level3 who confirmed they currently have… Continue reading
At 1:34pm we received alerts regarding some destinations being unreachable. Further investigation showed that our fibre link to Level3 was down unexpectedly. This caused a BGP routing event. Our configuration started the BGP reconvergance process as soon as the router saw the fibre link drop and outbound traffic was re-routed… Continue reading