Verified

Uplanned AT&T Metro-Ethernet Outage

17:37 Sep 20 2012 North Atlanta, GA, USA

Description
Outages appeared to have started at roughly 11:50AM with partial recovery at 12:15PM and back out of service at 12:16:15PM.



Reportedly this took out 1000+ MetroE circuits.



This has affected some national broadcast video traffic (IP) transport as well.



- Kraig Beahn




Update from ATT: The issue has been isolated to a LAG bundle between two 7609 routers in Atlanta and ATS is isolating the offending VLAN so issue can be mitigated. Network teams have identified the traffic is impacting ATLNGACS4CW. The source of the traffic has been traced back to ATLNGAPP4AW. Network teams are attempting to back trace the source of the traffic on ATLNGAPP4AW to either another router or an access circuit on this device. Troubleshooting through the network continues to locate the root source of the VLAN loop. This is a process of removing LAG bundles and core trunks from service until the CPU and traffic normalize. The process is underway with ATS and the Cisco is being engaged for additional support. There is no ETTR at this time.



- Aubrey Wells
Credibility: UP DOWN 0
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