TeraSwitch incident
Network backbone traffic degradation - LON <> EWR
TeraSwitch experienced a notice incident on July 25, 2025 affecting Intra-Market Connectivity and EWR2 - Newark, NJ and 1 more component, lasting 16d 11h. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- identified Jul 25, 2025, 02:54 PM UTC
Teraswitch has identified issues relating to a loss of backbone capacity on the LON-EWR path. This loss of capacity was due to an emergency maintenance by the cable provider, causing various traffic shifts both on and off our network. Teraswitch engineering is rerouting traffic to mitigate congestion along alternate routes; customers in EWR2 and other sites may see degraded network performance until this issue is resolved. If you have any questions or concerns, please reach out to Teraswitch Support at [email protected]
- monitoring Jul 31, 2025, 09:24 PM UTC
Our undersea cable provider has restored access early to the cable system. At this time we do not see any issues with network traffic - but it may be possible we will have to divert traffic again.
- monitoring Aug 06, 2025, 01:55 PM UTC
The LON1 EWR2 path remains down while the cable is repaired.
- monitoring Aug 06, 2025, 08:00 PM UTC
We are continuing to monitor for any further issues.
- resolved Aug 11, 2025, 02:28 AM UTC
This work is complete on the undersea cables and traffic flows are normalized.