We are currently tracking an issue with our OC-3 aggregation circuit that serves the Fresno area. The circuit went down for 5 minutes about 10 minutes ago. It is presently up, but not passing any traffic. We’ve been in touch with AT&T with regards to this issue and will update when we have more information. At this time we suspect a problem with AT&T’s ATM switch upstream of us. -Dusty and Nathan
Update: AT&T has isolated the issue to one of the core ATM switches in Fresno, which has ceased proper functioning. AT&T continues to work on repair of the affected ATM switch. Due to the core nature of this ATM switch, it has been confirmed that it is affecting most DSL in the Fresno area, not just Sonic.net.
Update: As of approximately 6:15 PM today, AT&T has repaired the failed switch, and traffic appears to be flowing normally across our Fresno OC-3 at this time. AT&T does not expect any further impact to the DSL network in Fresno.