We're currently seeing increased latency to/from China for our Seattle network due to suspected fiber cuts on the US west coast, this appears to be heavily impacting China Unicom's network (AS4837) which has likely lost considerable capacity. CMIN2 should not see any impact apart from a temporary 20ms latency increase due to a re-route caused by the fiber cuts. This shouldn't take too long to be resolved.
The fiber cut was fixed at 4pm UTC and we can confirm everything is now looking normal.
Confirmed fiber cut, here is the explanation from our transport provider: There is a fiber cut between Vacaville, CA and Sacramento, CA. The fiber cut was caused by a car hitting a utility pole.
It's likely that China Unicom is suffering capacity loss due to this same incident, there is no estimated fix time yet.
Past Incidents
Tuesday 28th January 2025
No incidents reported
Monday 27th January 2025
No incidents reported
Sunday 26th January 2025
Seattle NetworkSeattle China network maintenance - AS4837
The maintenance performed by the transport provider we use for the Seattle AS4837 route, that we emailed about previously, has now begun. AS4837 will be re-enabled by 2pm UTC (10pm Beijing time) at the latest.
Maintenance is complete and AS4837 has been reactivated as of 12:05 UTC.
