We have received a maintenance notification from Cogent Communications regarding one of IP Transit connections to the global internet. This maintenance is due on 12th February 2017 between midnight and 7am, with an expected outage time of 45-60 minutes. No outage to Netnorth customers is expected as we have multiple… Continue reading
Today we have enabled a new IP Transit connectivity provider. We now have additional connectivity from GTT supplied into one of our Manchester locations. This was enabled for testing during the weekend, and is now fully operational. We will balance our traffic over this over the next few days.
Following on from the router crash experienced yesterday, we have performed an emergency upgrade of the Cisco IOS-XE software on all of our internet-facing routers. This update should resolve the issue that was triggered yesterday. No outage to customers should have been experienced today, but there may have been brief… Continue reading
At 3:52pm today, one of our Cisco ASR routers experienced a crash within its routing engine. This caused the router to instantly stop routing and any destinations via the router experienced an outage. Unfortunately, this did not just sever connectivity cleanly… it started causing “flapping” (where routes are introduced and… Continue reading
We have received a maintenance notification from Virgin Media regarding one of our metro fibre circuits between Bolton and Manchester. This maintenance is due on 23rd February 2017 between midnight and 7am, with an expected outage time of 20 minutes. No outage to Netnorth customers is expected as we have… Continue reading
At 11:55pm tonight, our connection to Level3 appeared to disconnect. The symptoms are identical to the previous occasions where the Level3 router rebooted so we assume this to be the case again tonight. The connection is slowly coming back online, which further supports this suspicion. As Level3 appear to be… Continue reading
There is currently a storm over the Bolton area (with very nice fork lightning!) which has caused a brief power outage this evening around 7pm UK local time. Our UPS units continued to operate during the outage with no loss of power to the datacentres, and our generators started to… Continue reading
Yesterday, at around 11:50am, we had some reports of unusual activity on our ring network. We traced this down to elevated levels of CPU usage on our switches. Further investigation pointed to a high level of IGMP traffic being received. We further traced this to our LINX Extreme peering port… Continue reading
Earlier this evening we identified one of our Cisco switch stacks misbehaving causing a constant stream of stack reconverges – this constant reconverge event has been causing layer 2 network instability for traffic flowing via the stack of nine switches. We have just completed a physical inspection of all stack… Continue reading
At 4:35pm we received alerts that one of our hypervisors in Telecity Williams House, Manchester had ceased to process disk activity. No hardware alerts were present, so a forced reboot of the hypervisor was required. The server is now responding normally, and all virtual machines powered back up.